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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.

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

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.

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.

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.

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.

This animation shows how human infants can digest milk using the enzyme lactase.

This animation shows how proteins in the cell are tagged for disposal by ubiquitin and then degraded by the proteasome.

This playlist can be used to teach several core concepts in evolution and molecular biology by connecting students to actual research on the rock pocket mouse. It can be used in a general high school biology course.

This playlist can be used to teach several core concepts in genetics and molecular biology by having students collect and interpret evidence to explain the biology of lactose intolerance. It can be used in a general high school biology course.

This playlist can be used to teach several core topics in ecology by connecting students to actual research being conducted in Gorongosa National Park in Mozambique. It can be used in general high school biology and environmental science courses.

This playlist can be used to teach several core concepts of natural selection and speciation by connecting students to actual research on Caribbean anoles. It can be used in AP/IB Biology and undergraduate college courses.