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Content

Lt Biology

The Lt Biology Collection, developed in partnership with Vernier and Bio-Rad™ Laboratories, addresses core concepts in first year undergraduate introductory Biology. The collection introduces a variety of concepts fundamental to biology and biochemistry, including enzyme action, spectrophotometry, microscopy, photosynthesis, DNA replication, pH, CRISPR, and PCR.

Bio-Rad Laboratories Vernier

Click on a lesson name for a synopsis and equipment list or scroll down to see all hardware,
including pre-made systems and kits for your subject area.

+Acid Rain

In this lab, students will use a Go Direct® pH Sensor to measure changes in pH when CO2 is dissolved in water. In the second lab activity, students will measure changes in pH when H2SO4 is dissolved in various water samples, including distilled, fresh water, salt water, and a buffer. As an optional extension, students may investigate how dissolved H2SO4 affects the pH of hard and soft water.

Vernier Go Direct® Sensors required for this lesson

Go Direct® pH Sensor
See Details

Go Direct® pH Sensor

The Go Direct pH Sensor is a general-purpose pH sensor used to monitor pH of aqueous solutions.

×

+Animal Behavior

In this lab, students will observe the general behavioral characteristics of woodlice (Porcellio) and determine whether Porcellio perceive and react to certain environmental changes. They will also learn about the physical sex differences present in fruit flies (Drosophila melanogaster) and observe their courtship and mating rituals as an example of a strict behavioral pattern.

+Aquatic Photosynthesis

In this lab, students will use a Go Direct® Optical Dissolved Oxygen Probe to measure the dissolved oxygen (DO) concentration in water containing an aquatic moss. These values are used to determine whether aquatic plants undergo photosynthesis or cellular respiration under various conditions of light (darkness, full spectrum, blue, and red light).

Vernier Go Direct® Sensors required for this lesson

Go Direct® Optical Dissolved Oxygen Probe
See Details

Go Direct® Optical Dissolved Oxygen Probe

The Go Direct Optical Dissolved Oxygen Probe makes it easy to measure dissolved oxygen concentration, water temperature, and atmospheric pressure.

×

+Bacterial Transformation

In this lab, students will use a Bio-Rad pGLO Bacterial Transformation Kit to genetically transform Esherichia coli (E. coli), so that the bacteria incorporate the green fluorescent protein (GFP) gene and fluoresce when exposed to arabinose and ultraviolet (UV) or blue light.

Vernier Go Direct® Sensors required for this lesson

Go Direct® Temperature Probe
Optional - See Details

Go Direct® Temperature Probe

The Go Direct Temperature Probe is a rugged, general-purpose sensor that students can use to monitor temperature.

Optional equipment

The Go Direct® Temperature Probe is optional as a thermometer can be used in its place.

×

Bio-Rad kits required for this lesson

Bio-Rad pGLO Bacterial Transformation Kit
See Details

Bio-Rad pGLO Bacterial Transformation Kit

The pGLO Bacterial Transformation Kit provides all the reagents and consumables needed for your students to genetically engineer bacteria using a gene from the bioluminescent jellyfish Aequorea victoria.

×

+Biological Membranes

In this lab, students will use a Go Direct® SpectroVis® Plus Spectrophotometer to determine the degree of membrane damage caused in beets after exposure to various solvents and environmental conditions (temperature, alcohols, detergent, and pH).

Vernier Go Direct® Sensors required for this lesson

Go Direct® SpectroVis® Plus Spectrophotometer
See Details

Go Direct® SpectroVis® Plus Spectrophotometer

The Go Direct SpectroVis Plus Spectrophotometer quickly measures a full wavelength spectrum. It is able to measure both Absorbance over Wavelength and Absorbance over Time.

×
Go Direct® Temperature Probe
Optional - See Details

Go Direct® Temperature Probe

The Go Direct Temperature Probe is a rugged, general-purpose sensor that students can use to monitor temperature.

Optional equipment

The Go Direct® Temperature Probe is optional as a thermometer can be used in its place.

×

+Cellular Respiration

In this lab students will use a Go Direct® CO2 Gas Sensor to investigate whether germinating and non-germinating peas respire. In the second lab activity, students will determine whether temperature affects the rate of respiration. As an optional extension, students may complete an inquiry-based activity on cellular respiration.

Vernier Go Direct® Sensors required for this lesson

Go Direct® CO2 Gas Sensor
See Details

Go Direct® CO2 Gas Sensor

The Go Direct CO2 Gas Sensor measures gaseous carbon dioxide concentration levels, air temperature, and relative humidity.

×

+CRISPR

In this lab, students will use a Bio-Rad Out of the Blue CRISPR Kit to cut bacterial chromosomal DNA at a specific location within the lacZ gene using CRISPR. Students will then take advantage of the cells' ability to perform homology-directed repair (HDR) to cause a desired change in the lacZ sequence by providing the cells with large quantities of a donor template DNA. This template DNA includes an insert with a stop codon that will disrupt the gene function. Students will perform blue-white screening to confirm gene editing. In the first optional extension activity, students identify a genetic disease and perform a BLAST search to find a target site. In the second optional extension activity, students discuss the ethical considerations of CRISPR.

Bio-Rad kits required for this lesson

Bio-Rad Out of the Blue CRISPR Kit
See Details

Bio-Rad Out of the Blue CRISPR Kit

The Out of the Blue CRISPR Kit provides all the reagents and consumables needed for your students to use a robust CRISPR gene editing protocol to modify a chromosomal gene in E. coli.

×

+Diffusion through Membranes

In this lab, students will use a Go Direct® Conductivity Probe to measure the diffusion rate of salt in solution. They will determine how changes in the concentration gradient, and the presence of other molecules, affect the diffusion rate of salt across a membrane. As an optional extension, students may complete an inquiry-based activity on diffusion.

Vernier Go Direct® Sensors required for this lesson

Go Direct® Conductivity Probe
See Details

Go Direct® Conductivity Probe

The Go Direct Conductivity Probe determines the ionic content of an aqueous solution by measuring its electrical conductivity.

×
Go Direct® Temperature Probe
Optional for Extension - See Details

Go Direct® Temperature Probe

The Go Direct Temperature Probe is a rugged, general-purpose sensor that students can use to monitor temperature.

Optional equipment

The Go Direct® Temperature Probe is optional as a thermometer can be used in its place.

Supporting Students at Varying Skill Levels

As with all labs in Lt, content can be easily adapted to meet your course requirements. Many of the biology labs include guided inquiry extensions that allow students to choose and investigate a research question and complete a built-in lab report. These extensions increase academic rigor and promote lab skills, often required in Majors courses, but can be quickly removed to accommodate courses without these requirements, such as in Non-Majors courses or where lab time is limited.

×

+DNA Structure and Replication

In this lab, students will examine the structure of deoxyribonucleic acid (DNA) by constructing a three-dimensional paper model to see how the nucleobases and phosphate-sugar backbones fit together to create a double-helical shape. Students will gain an understanding of how DNA molecules are compacted into chromatin to fit within our cells. Students will work through the replication process using model nucleotides to help them visualize DNA’s antiparallel structure and the semiconservative nature of the replication process, and recognize the roles of different enzymes in unravelling and synthesizing new DNA. Finally, students will explore ways in which errors are detected and corrected.

+Ecology and Biodiversity

In this lab, students will sample and assess biodiversity from different ecosystems. In the first activity, students will count and identify organisms from two different ecosystems in order to carry out an alpha, beta, and gamma assessment of these ecosystems. You can choose if you want students to examine pond water, or to collect data in the field for this activity. In the second activity, students will examine species evenness, calculate Shannon equitability values, and examine how diversity changes over time.

+ELISA: Giant Panda Problem

In this lab, students will learn how an indirect ELISA works by using a Bio-Rad Giant Panda Problem Kit to detect specific proteins in mock panda urine samples. Students will use secondary antibodies that recognize and bind to estrogen to identify which pandas are preparing to ovulate. In the first half of this lab, students will run an ELISA to determine which of four female giant pandas is about to ovulate. Students’ results will be used to help caretakers determine which female pandas are nearing their fertility window – an important step in the conservation of giant pandas as a species. As an optional extension, students will have the opportunity to research and engage with the ethical dilemmas of antibody production techniques.

Bio-Rad kits required for this lesson

Bio-Rad Giant Panda Problem Kit
See Details

Bio-Rad Giant Panda Problem Kit

The Giant Panda Problem Kit includes all the reagents and consumables needed for your students to measure reproductive hormones in simulated panda samples using a real ELISA with real antibodies.

×

+Enzyme Action: Testing Catalase Activity

In this lab, students will investigate how the concentrations of enzyme and substrate influence the reaction rate of catalase. Students will use a Go Direct® O2 Gas Sensor to measure the concentration of oxygen gas formed as hydrogen peroxide is broken down. As an optional extension, students choose one of three parameters and investigate how their chosen variable affects reaction rate.

Vernier Go Direct® Sensors required for this lesson

Go Direct® O2 Gas Sensor
See Details

Go Direct® O2 Gas Sensor

The Go Direct O2 Gas Sensor measures gaseous oxygen concentration levels and air temperature.

×
Go Direct® pH Sensor
Extension - See Details

Go Direct® pH Sensor

The Go Direct pH Sensor is a general-purpose pH sensor used to monitor pH of aqueous solutions.

Supporting Students at Varying Skill Levels

As with all labs in Lt, content can be easily adapted to meet your course requirements. Many of the biology labs include guided inquiry extensions that allow students to choose and investigate a research question and complete a built-in lab report. These extensions increase academic rigor and promote lab skills, often required in Majors courses, but can be quickly removed to accommodate courses without these requirements, such as in Non-Majors courses or where lab time is limited.

×
Go Direct® Temperature Probe
Optional for Extension - See Details

Go Direct® Temperature Probe

The Go Direct Temperature Probe is a rugged, general-purpose sensor that students can use to monitor temperature.

Optional equipment

The Go Direct® Temperature Probe is optional as a thermometer can be used in its place.

Supporting Students at Varying Skill Levels

As with all labs in Lt, content can be easily adapted to meet your course requirements. Many of the biology labs include guided inquiry extensions that allow students to choose and investigate a research question and complete a built-in lab report. These extensions increase academic rigor and promote lab skills, often required in Majors courses, but can be quickly removed to accommodate courses without these requirements, such as in Non-Majors courses or where lab time is limited.

×

+Exploring the Greenhouse Effect

In this lab, students will use two Go Direct® Temperature Probes to observe the greenhouse effect by measuring temperatures in model greenhouse and control beakers. Students will then examine how carbon dioxide (CO2) affects temperature within a model greenhouse. As an optional extension, students perform a guided experiment to determine how different terrains reflect heat.

Vernier Go Direct® Sensors required for this lesson

Go Direct® Temperature Probe
See Details

Go Direct® Temperature Probe

The Go Direct Temperature Probe is a rugged, general-purpose sensor that students can use to monitor temperature.

×

+Forensic DNA Fingerprinting

In this lab, students will use a Bio-Rad Forensic DNA Fingerprinting Kit to take the role of a forensic scientist who has been called upon to provide evidence in a criminal investigation. They will analyze DNA found at the crime scene and from five suspects. They will use restriction enzymes to digest the DNA, use gel electrophoresis to separate the DNA fragments on a gel, and then analyze the fragment bands for patterns of similarity with the crime scene sample. They will then present their results and their interpretation to the court. As an optional extension, students can consider the importance of information literacy.

“Bio-Rad's Forensic DNA Fingerprinting Kit transformed my DNA unit into a real success for me and my students. I had always used paper activities, but now my students actually use real pipets, gels, and electrophoresis! Bio-Rad is my go-to for new labs.”  
- Todd Meador, Hoffman Estates High School

Bio-Rad kits required for this lesson

Bio-Rad Forensic DNA Fingerprinting Kit
See Details

Bio-Rad Forensic DNA Fingerprinting Kit

The Forensic DNA Fingerprinting Kit includes all the reagents and consumables needed for your students to analyze simulated suspect and crime scene DNA samples using restriction digestion and agarose gel electrophoresis.

×

+From DNA to Protein

In this lab, students will replicate the process of deoxyribonucleic acid (DNA) transcription and translation by using a paper-based model to highlight the individual steps of the different phases (initiation, elongation, and termination). Students will gain an understanding of different types of mutations and will be able to differentiate them. Furthermore, students are taken through a sickle cell disease case study to understand how mutations can lead to diseases, and the general effect mutations have on the resulting protein.

+Genetics of Drosophila

In this lab, students will use wild-type and mutant strains of fruit fly (Drosophila melanogaster) to demonstrate basic genetic principles. Students will be given examples of monohybrid, dihybrid, and sex-linked crosses. The offspring (F1 generation) of the first cross will breed to produce the F2 generation. Students will examine the traits of each generation. They will use Punnett squares to draw conclusions about what sort of cross has occurred and calculate chi-square statistics to test their null (H0) and alternative (H1) hypotheses.

+Interdependence of Plants and Animals

In this lab, students will investigate how O2 and CO2 are exchanged among plants, snails, and the water in which both exist. To test this, students will use a Go Direct® pH Sensor and a Go Direct® Optical Dissolved Oxygen Probe to detect O2 and CO2 levels in pond water containing snails, Elodea, or a combination of the two, over a three-day period. Measurements are taken in both light and dark conditions.

Vernier Go Direct® Sensors required for this lesson

Go Direct® Optical Dissolved Oxygen Probe
See Details

Go Direct® Optical Dissolved Oxygen Probe

The Go Direct Optical Dissolved Oxygen Probe makes it easy to measure dissolved oxygen concentration, water temperature, and atmospheric pressure.

×
Go Direct® pH Sensor
See Details

Go Direct® pH Sensor

The Go Direct pH Sensor is a general-purpose pH sensor used to monitor pH of aqueous solutions.

×

+Introduction to Cells

In this lab, students will investigate the defining characteristics of prokaryotic and eukaryotic cells. Students will use a compound microscope to observe slides of prokaryotic and eukaryotic cells, some of which they prepare themselves using wet mount techniques. Throughout the lab, students will compare and contrast the size of, and structures within, each cell and consider how structure influences cell function. Students will end the lab classifying cells from “mystery organisms” as bacteria, protist, plant, or animal based on what they’ve learned. 

+Introduction to Microscopy

In this lab, students will learn how to safely use a compound microscope to observe both inanimate objects and more complex biological specimens. Students will also practice how to manipulate the microscope to obtain high-quality images, as well as to accurately determine the specimen's size. The extension activity teaches students how to prepare and observe a wet mount.

+Introduction to Molecular Evolution

In this lab, students will use morphological observation to construct an initial cladogram of the relationships between five animals. They will then use a Bio-Rad Comparative Proteomics I: Protein Profiler Kit to perform SDS-PAGE analysis to compare protein profiles, and refine their cladograms using these molecular data. In the theoretical extension, students will propose hypotheses and then conduct independent research into a selected topic relating to apparently maladaptive behavior. In the science communication extension, students will select and justify strategies for communicating their results to specific audiences.

Bio-Rad kits required for this lesson

Bio-Rad Comparative Proteomics I: Protein Profiler Kit
See Details

Bio-Rad Comparative Proteomics I: Protein Profiler Kit

The Comparative Proteomics I: Protein Profiler Kit provides all the reagents and consumables needed for your students to analyze muscle tissue samples using SDS-PAGE and reveal evolutionary relationships.

×

+Limitations on Cell Size

In this lab, students will use agar cubes as cell models to investigate how altering surface area while maintaining constant volume affects the rate of material exchange with the environment. They will use a Go Direct® Conductivity Probe to measure solution conductivity, which is proportional to the ion concentration in the solution.

Vernier Go Direct® Sensors required for this lesson

Go Direct® Conductivity Probe
See Details

Go Direct® Conductivity Probe

The Go Direct Conductivity Probe determines the ionic content of an aqueous solution by measuring its electrical conductivity.

×

+Macromolecules: Proteins

In this lab, students will use a Go Direct® SpectroVis® Plus Spectrophotometer and a Bio-Rad Got Protein? Kit to perform two types of assays: a Bradford assay and a biuret assay. In activity 1, students will use the Bradford assay to determine the protein concentration of milk and a high protein drink. In activity 2, students will compare the two assays to determine their respective abilities to detect proteins and amino acids. In an optional extension activity, students will use a Go Direct® pH Sensor to determine the properties of three amino acids: arginine, aspartic acid, and tyrosine.

Vernier Go Direct® Sensors required for this lesson

Go Direct® pH Sensor
Optional for Extension - See Details

Go Direct® pH Sensor

The Go Direct pH Sensor is a general-purpose pH sensor used to monitor pH of aqueous solutions.

Supporting Students at Varying Skill Levels

As with all labs in Lt, content can be easily adapted to meet your course requirements. Many of the biology labs include guided inquiry extensions that allow students to choose and investigate a research question and complete a built-in lab report. These extensions increase academic rigor and promote lab skills, often required in Majors courses, but can be quickly removed to accommodate courses without these requirements, such as in Non-Majors courses or where lab time is limited.

×
Go Direct® SpectroVis® Plus Spectrophotometer
See Details

Go Direct® SpectroVis® Plus Spectrophotometer

The Go Direct SpectroVis Plus Spectrophotometer quickly measures a full wavelength spectrum. It is able to measure both Absorbance over Wavelength and Absorbance over Time.

×

Bio-Rad kits required for this lesson

Bio-Rad Got Protein? Kit
See Details

Bio-Rad Got Protein? Kit

The Got Protein? Kit from Bio-Rad provides all the reagents and consumables needed for your students to easily measure the protein content of liquid samples.

×

+Measuring Primary Productivity

In this lab, students will use a Go Direct® Optical Dissolved Oxygen Probe to measure the production of oxygen (O2) in water samples exposed to different levels of light. Students will set up a series of bottles containing water from the same sample and expose the bottles to controlled levels of light. Measuring the changes in DO will allow them to calculate how much photosynthesis is occurring in the samples.

In the practical extension, students will develop their own investigation into primary productivity using the Go Direct® Optical Dissolved Oxygen Probe.

In the theoretical extension, students will explore the biological and interdisciplinary issues related to three case studies: carbon accreditation, eutrophication, and rewilding.

Vernier Go Direct® Sensors required for this lesson

Go Direct® Optical Dissolved Oxygen Probe
See Details

Go Direct® Optical Dissolved Oxygen Probe

The Go Direct Optical Dissolved Oxygen Probe makes it easy to measure dissolved oxygen concentration, water temperature, and atmospheric pressure.

×

+Metabolization of Sugars by Yeast

In this lab, students will use a Go Direct® CO2 Gas Sensor to determine how the respiration rate of yeast changes with sucrose concentration, and whether yeast are capable of metabolizing a variety of sugars. The four sugars to be tested are sucrose (table sugar), glucose (blood sugar), fructose (fruit sugar), and lactose (milk sugar). As an optional extension, students may complete an inquiry-based activity on cellular respiration.

Vernier Go Direct® Sensors required for this lesson

Go Direct® CO2 Gas Sensor
See Details

Go Direct® CO2 Gas Sensor

The Go Direct CO2 Gas Sensor measures gaseous carbon dioxide concentration levels, air temperature, and relative humidity.

×
Go Direct® Temperature Probe
Optional - See Details

Go Direct® Temperature Probe

The Go Direct Temperature Probe is a rugged, general-purpose sensor that students can use to monitor temperature.

Optional equipment

The Go Direct® Temperature Probe is optional as a thermometer can be used in its place.

×

+Mitosis and Meiosis

Distance Learning Lab: In this lab, students will draw each stage in the processes of mitosis and meiosis, and explore sources of genetic variability and errors in cell division. They will also examine histological slides, and compare and contrast the processes of mitosis and meiosis. Please note that this content is not based on a Vernier student experiment.

Lab: In this lab, students will investigate different ways that cells divide, and find out what happens when errors occur during these complex processes. Students will examine mitosis using both plant and animal cells, model the phases of meiosis with clay, observe meiosis in a lily anther, and learn about the sources of genetic variation and potential errors during meiosis.

+Modeling Population Dynamics

In this lab, students will model the growth of populations over time and observe the effects of species interactions. Students will explore simple exponential growth, carrying capacity, and the effects of competing herbivore species and predator species. In an optional extension activity, students will examine how a herbivore population is affected by decomposers.

+Osmosis

In this lab, students will use a Go Direct® Conductivity Probe to measure changes in the conductivity of a variety of salt solutions containing potato samples. From these measurements, the relative tonicities of the salt solutions compared to the potato samples can be determined. In addition, students will measure how the weights of the potato samples change, and relate this to the conductivity data. In the second activity, students will examine the responses of Elodea cells to solutions of varying tonicity.

Vernier Go Direct® Sensors required for this lesson

Go Direct® Conductivity Probe
See Details

Go Direct® Conductivity Probe

The Go Direct Conductivity Probe determines the ionic content of an aqueous solution by measuring its electrical conductivity.

×

+Photosynthesis

In this lab, students will use a Go Direct® SpectroVis® Plus Spectrophotometer to determine the photosynthetic activity of blended spinach leaves. They will exclude light from one spinach sample and boil another sample to measure the effects of darkness and heat on the photosynthetic rate. They will then use atrazine to observe how inhibitors affect photosynthesis. As an optional extension, students may complete an inquiry-based activity on photosynthesis.

Vernier Go Direct® Sensors required for this lesson

Go Direct® SpectroVis® Plus Spectrophotometer
See Details

Go Direct® SpectroVis® Plus Spectrophotometer

The Go Direct SpectroVis Plus Spectrophotometer quickly measures a full wavelength spectrum. It is able to measure both Absorbance over Wavelength and Absorbance over Time.

×

+Polymerase Chain Reaction (PCR)

In this lab, students will use a Bio-Rad PV92 PCR Informatics Kit along with real-world forensic techniques to extract DNA from their hair follicles or cheek cells, and then use PCR amplification and electrophoresis to genotype their own DNA at a specific genetic locus. Using their own results, students test the Hardy-Weinberg equilibrium theory within their classroom population, and compare their classroom results to genetic data of a larger population.

Bio-Rad kits required for this lesson

Bio-Rad PV92 PCR Informatics Kit
See Details

Bio-Rad PV92 PCR Informatics Kit

The PV92 PCR Informatics Kit includes all the reagents and consumables needed for your students to extract DNA from their own cells and use PCR to amplify the PV92 region of the human genome.

×

+Population Dynamics

In this lab, a yeast population will be given nutrients and placed in a closed environment. Organic materials will not enter or leave the environment, but inorganic gases may be exchanged. To monitor population growth, students will measure the turbidity of the solution with a Go Direct® SpectroVis® Plus Spectrophotometer and perform yeast cell counts using a microscope. As an optional extension, students may complete an inquiry-based activity on population dynamics.

Vernier Go Direct® Sensors required for this lesson

Go Direct® SpectroVis® Plus Spectrophotometer
See Details

Go Direct® SpectroVis® Plus Spectrophotometer

The Go Direct SpectroVis Plus Spectrophotometer quickly measures a full wavelength spectrum. It is able to measure both Absorbance over Wavelength and Absorbance over Time.

×
Go Direct® Temperature Probe
Optional for Extension - See Details

Go Direct® Temperature Probe

The Go Direct Temperature Probe is a rugged, general-purpose sensor that students can use to monitor temperature.

Optional equipment

The Go Direct® Temperature Probe is optional as a thermometer can be used in its place.

Supporting Students at Varying Skill Levels

As with all labs in Lt, content can be easily adapted to meet your course requirements. Many of the biology labs include guided inquiry extensions that allow students to choose and investigate a research question and complete a built-in lab report. These extensions increase academic rigor and promote lab skills, often required in Majors courses, but can be quickly removed to accommodate courses without these requirements, such as in Non-Majors courses or where lab time is limited.

×

+Population Genetics and Evolution

Investigate a genetically inherited trait, calculate allele frequencies using the Hardy-Weinberg formula, and compare classroom allele frequencies to North American averages. Examine the effects of natural selection, heterozygous advantage, and genetic drift on allele frequencies.

+The Visible Spectra of Plant Pigments

In this lab, students will extract pigments from spinach and carrots and measure their visible absorbance spectra with a Go Direct® SpectroVis® Plus Spectrophotometer. They will also measure the absorbance of water samples dyed with blue and yellow food coloring, which will provide an analogy for the absorbance of the plant pigment extracts.

Vernier Go Direct® Sensors required for this lesson

Go Direct® SpectroVis® Plus Spectrophotometer
See Details

Go Direct® SpectroVis® Plus Spectrophotometer

The Go Direct SpectroVis Plus Spectrophotometer quickly measures a full wavelength spectrum. It is able to measure both Absorbance over Wavelength and Absorbance over Time.

×

+Transpiration

In this lab, students will use a Go Direct® Gas Pressure Sensor to ascertain the transpiration rates of woody-stemmed plants under control and experimental conditions. Students will investigate how altering an environmental variable (light, humidity, temperature, or air movement) impacts the rate of transpiration for their species of plant. In the extension activity, students will use a compound microscope to complete stomatal counts on the leaves of different plant species, and relate the counts to the plants’ environments.

Vernier Go Direct® Sensors required for this lesson

Go Direct® Gas Pressure Sensor
See Details

Go Direct® Gas Pressure Sensor

The Go Direct Gas Pressure Sensor measures the absolute pressure of a gas.

×

+Turnip Peroxidase

In this lab, students will use a SpectroVis® Plus Spectrophotometer to investigate how enzyme and substrate concentrations affect the rate of peroxidase-catalyzed reactions and determine Vmax, ½ Vmax, and Km using a Lineweaver–Burk plot. As an optional extension, students may complete an inquiry-based activity on peroxidase-catalyzed reaction rate.

Vernier Go Direct® Sensors required for this lesson

Go Direct® pH Sensor
Extension - See Details

Go Direct® pH Sensor

The Go Direct pH Sensor is a general-purpose pH sensor used to monitor pH of aqueous solutions.

Supporting Students at Varying Skill Levels

As with all labs in Lt, content can be easily adapted to meet your course requirements. Many of the biology labs include guided inquiry extensions that allow students to choose and investigate a research question and complete a built-in lab report. These extensions increase academic rigor and promote lab skills, often required in Majors courses, but can be quickly removed to accommodate courses without these requirements, such as in Non-Majors courses or where lab time is limited.

×
Go Direct® SpectroVis® Plus Spectrophotometer
See Details

Go Direct® SpectroVis® Plus Spectrophotometer

The Go Direct SpectroVis Plus Spectrophotometer quickly measures a full wavelength spectrum. It is able to measure both Absorbance over Wavelength and Absorbance over Time.

×
Go Direct® Temperature Probe
Optional for Extension - See Details

Go Direct® Temperature Probe

The Go Direct Temperature Probe is a rugged, general-purpose sensor that students can use to monitor temperature.

Optional equipment

The Go Direct® Temperature Probe is optional as a thermometer can be used in its place.

Supporting Students at Varying Skill Levels

As with all labs in Lt, content can be easily adapted to meet your course requirements. Many of the biology labs include guided inquiry extensions that allow students to choose and investigate a research question and complete a built-in lab report. These extensions increase academic rigor and promote lab skills, often required in Majors courses, but can be quickly removed to accommodate courses without these requirements, such as in Non-Majors courses or where lab time is limited.

×

Software Platform

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Content

Over 500 interactive and fully-editable lessons for life sciences, nursing, medicine, and chemistry.

Software

Create, customize, and deliver your own interactive content that students can access anywhere.

Hardware

Students can record and analyze authentic data in Lt using PowerLab, Lt Sensors, or Go Direct® Sensors, to reinforce theory through experimentation.

Equipment

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Vernier Go Direct® Sensors Bio-Rad Kits

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Go Direct® O2 Gas Sensor
See Details

Go Direct® O2 Gas Sensor

The Go Direct O2 Gas Sensor measures gaseous oxygen concentration levels and air temperature.

Required for:

Enzyme Action: Testing Catalase Activity

×
Go Direct® SpectroVis® Plus Spectrophotometer
See Details

Go Direct® SpectroVis® Plus Spectrophotometer

The Go Direct SpectroVis Plus Spectrophotometer quickly measures a full wavelength spectrum. It is able to measure both Absorbance over Wavelength and Absorbance over Time.

Required for:

Beer’s Law

Biological Membranes

Determining an Equilibrium Constant

Macromolecules: Proteins

Photosynthesis

Population Dynamics

Rate Law Determination

Synthesis and Analysis of Aspirin

The Visible Spectra of Plant Pigments

Turnip Peroxidase

×
Go Direct® Conductivity Probe
See Details

Go Direct® Conductivity Probe

The Go Direct Conductivity Probe determines the ionic content of an aqueous solution by measuring its electrical conductivity.

Required for:

Conductimetric Titration and Gravimetric Determination of a Precipitate

Diffusion through Membranes

Limitations on Cell Size

Osmosis

Properties of Solutions: Electrolytes and Nonelectrolytes

×
Go Direct® Gas Pressure Sensor
See Details

Go Direct® Gas Pressure Sensor

The Go Direct Gas Pressure Sensor measures the absolute pressure of a gas.

Required for:

Boyle’s Law and Charles’ Law

Molar Volume of a Gas

Transpiration

×
Go Direct® Optical Dissolved Oxygen Probe
See Details

Go Direct® Optical Dissolved Oxygen Probe

The Go Direct Optical Dissolved Oxygen Probe makes it easy to measure dissolved oxygen concentration, water temperature, and atmospheric pressure.

Required for:

Aquatic Photosynthesis

Interdependence of Plants and Animals

Measuring Primary Productivity

×
Go Direct® CO2 Gas Sensor
See Details

Go Direct® CO2 Gas Sensor

The Go Direct CO2 Gas Sensor measures gaseous carbon dioxide concentration levels, air temperature, and relative humidity.

Required for:

Cellular Respiration

Metabolization of Sugars by Yeast

×
Go Direct® pH Sensor
See Details

Go Direct® pH Sensor

The Go Direct pH Sensor is a general-purpose pH sensor used to monitor pH of aqueous solutions.

Required for:

Acid Rain

Acid-Base Titration

Determining the Ksp of Calcium Hydroxide

Dissociation Constants

Enzyme Action: Testing Catalase Activity - Extension

Identifying an Unknown Diprotic Acid

Interdependence of Plants and Animals

Macromolecules: Proteins - Extension

Standardizing a Solution

Turnip Peroxidase - Extension

Supporting Students at Varying Skill Levels

As with all labs in Lt, content can be easily adapted to meet your course requirements. Many of the biology labs include guided inquiry extensions that allow students to choose and investigate a research question and complete a built-in lab report. These extensions increase academic rigor and promote lab skills, often required in Majors courses, but can be quickly removed to accommodate courses without these requirements, such as in Non-Majors courses or where lab time is limited.

×
Go Direct® Temperature Probe
See Details

Go Direct® Temperature Probe

The Go Direct Temperature Probe is a rugged, general-purpose sensor that students can use to monitor temperature.

Required for:

Bacterial Transformation

Biological Membranes

Boyle’s Law and Charles’ Law

Diffusion through Membranes - Extension

Enzyme Action: Testing Catalase Activity - Extension

Evaporation and Intermolecular Attractions

Exploring the Greenhouse Effect

Measuring and Predicting Heats of Reaction

Metabolization of Sugars by Yeast

Molar Volume of a Gas

Population Dynamics - Extension

Temperature and State Changes

Turnip Peroxidase - Extension

Supporting Students at Varying Skill Levels

As with all labs in Lt, content can be easily adapted to meet your course requirements. Many of the biology labs include guided inquiry extensions that allow students to choose and investigate a research question and complete a built-in lab report. These extensions increase academic rigor and promote lab skills, often required in Majors courses, but can be quickly removed to accommodate courses without these requirements, such as in Non-Majors courses or where lab time is limited.

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Disclaimer: The above lessons, software platform and equipment are not a final recommendation.
Please inquire about your selection above to discuss your needs with us and obtain a personalised solution.

* You may not need hardware if you're only using our software platform(s), or if you already have hardware.

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