1 - 12 of 50 results

Why Can Some Digest Dairy and Others Cannot?

In this activity, students investigate the phenomenon of lactase persistence by making sense of a series of data sets.

Biochemistry & Molecular Biology
Genetics
Evolution
Lessons
High School — General
High School — AP/IB
College

Inbreeding in Island Wolves

This activity guides the analysis of a published scientific figure from a study that explored inbreeding depression in a small, isolated population of wolves.

Genetics
Evolution
Environmental Science
Science Practices
Data Points
High School — General
High School — AP/IB
College

What Causes Different Fur Colors?

In this inquiry-based activity, students investigate the phenomenon of fur colors in rock pocket mice to connect genotypes to phenotypes and molecular genetics to evolution.

Genetics
Evolution
Lessons
High School — General
High School — AP/IB

Pyruvate Dehydrogenase

This animation shows how the pyruvate dehydrogenase enzyme complex converts pyruvate into acetyl-CoA. It is the second of six animations about cellular respiration.

Biochemistry & Molecular Biology
Cell Biology
Animations
High School — AP/IB
College

Glycolysis

This animation shows how glycolysis converts glucose into pyruvate through a series of enzyme reactions. It is the first of six animations about cellular respiration. These animations bring to life the molecular engines inside mitochondria that generate ATP, the main source of chemically stored energy used throughout the body.

Biochemistry & Molecular Biology
Cell Biology
Animations
High School — AP/IB
College

ATP in Use

This animation shows two examples of how the cell uses energy from ATP. It is the sixth of six animations about cellular respiration. These animations bring to life the molecular engines inside mitochondria that generate ATP, the main source of chemically stored energy used throughout the body.

Biochemistry & Molecular Biology
Cell Biology
Animations
High School — AP/IB
College

Electron Transport Chain

This animation shows how the enzyme complexes of the electron transport chain harvest energy from cofactor molecules to pump protons across the mitochondrial membrane and establish a chemical gradient. It is the fourth of six animations about cellular respiration. These animations bring to life the molecular engines inside mitochondria that generate ATP, the main source of chemically stored energy used throughout the body.

Biochemistry & Molecular Biology
Cell Biology
Animations
High School — AP/IB
College

Citric Acid Cycle

This animation shows the reactions of the citric acid cycle, which splits off carbon atoms and generates energy-rich reduced forms of cofactor molecules. It is the third of six animations about cellular respiration. These animations bring to life the molecular engines inside mitochondria that generate ATP, the main source of chemically stored energy used throughout the body.

Biochemistry & Molecular Biology
Cell Biology
Animations
High School — AP/IB
College

ATP Synthesis

This animation shows how the proton gradient across the mitochondrial membrane powers the ATP synthase enzyme to make ATP. It is the fifth of six animations about cellular respiration. These animations bring to life the molecular engines inside mitochondria that generate ATP, the main source of chemically stored energy used throughout the body.

Biochemistry & Molecular Biology
Cell Biology
Animations
High School — AP/IB
College

Building a Paper Model of CRISPR-Cas9

In this hands-on activity, students build a paper model to explore how CRISPR-Cas9 is used to edit genes.

Biochemistry & Molecular Biology
Labs & Demos
High School — AP/IB
College

Testosterone Levels in Elite Athletes

This activity guides the analysis of a published scientific figure from a study that compared the testosterone levels of Olympic-level elite athletes.

Anatomy & Physiology
Science Practices
Data Points
High School — General
High School — AP/IB
College

Why Two Heads?

This activity explores images of planarians regenerating missing body parts, which serve as phenomena for learning about cell division and differentiation.

Cell Biology
Anatomy & Physiology
Phenomenal Images
High School — General
High School — AP/IB