QUIZAlcohol Metabolism Explorer
How quickly a person breaks down alcohol depends on two enzymes, ADH1B and ALDH2, and on the DNA that…
Topic
Online Quiz
Interactive quizzes embed multiple choice questions directly into simulations, so students test their reasoning while they explore rather than afterward. Immediate feedback turns each attempt into a chance to correct misconceptions before an exam.
29 interactives
QUIZ
GAMEATP Cycle Game
ATP is the cell's short term energy currency. Attaching a phosphate to ADP stores energy in a new bond,…
QUIZCell Differentiation Simulator
Every cell in a body carries the same DNA, yet a nerve cell and a muscle cell are nothing alike, because…
LABCell Diffusion Explorer
Cells stay alive by controlling what crosses the membrane. Some molecules drift down a concentration…
QUIZCellular Energy and Thermodynamics
Living things run on a constant flow of energy. Cells break down fuel molecules to release it, then…
QUIZCFTR Channel Simulation
Cystic fibrosis starts with a tiny change in one gene. Deleting three nucleotides from CFTR removes a…
QUIZChi-Square Statistical Activity
Real biological data never match a prediction exactly, so biologists need a way to judge whether a…
GAMEContractile
Freshwater cells constantly take in water because their surroundings are more dilute than their…
QUIZDAPA (Data Analysis Practice App)
Biology runs on evidence, and evidence arrives as messy data that has to be organized, graphed and…
QUIZEndosymbiotic Theory Interactive
Mitochondria and chloroplasts were once free living bacteria that were swallowed by an ancestral cell…
LABEnvironmental Effects on Phenotype Lab
A genotype does not fix a phenotype on its own. Identical genes can produce very different traits…
LABEnzyme Lock and Key Interactive
Enzymes are proteins that speed up the chemical reactions life depends on, and each one only acts on a…
QUIZESPA (Experimental Skills Practice App)
Practice identifying variables, controls and hypotheses across 25 written biology experiments.
QUIZGraphing & Statistics Tool
Biological measurements vary from one sample to the next, so scientists use statistics to judge whether…
LABMembrane Explorer
A cell membrane lets some substances through and holds others back, which is how a cell keeps its…
QUIZMembrane Fatty Acid Explorer
A cell membrane has to stay fluid to work, but cold makes the fatty acid tails of its phospholipids pack…
QUIZOperail: Gene Regulation Simulation
Bacteria do not transcribe every gene all the time; they switch genes on and off as conditions change.…
LABOsmosis Simulator
Water crosses a semipermeable membrane from where solutes are dilute toward where they are concentrated,…
QUIZPocket Mice Natural Selection
Natural selection acts when some individuals survive and reproduce better than others because of the…
QUIZPopulation Growth Calculator
Populations grow when births outpace deaths, but no population grows without limit forever. The…
QUIZPowerhouse (Mitochondria Simulator)
Mitochondria finish the job of pulling energy out of food. The citric acid cycle strips electrons from…
QUIZProtein Modification Visualizer
Proteins made at the endoplasmic reticulum are rarely finished when they are built. They travel by…
QUIZRedOx Challenge
Photosynthesis and cellular respiration are, at heart, a long relay of electrons passed between…
QUIZSickle Cell Simulation
A single nucleotide change in the HBB gene alters one amino acid in hemoglobin, and that tiny change…
QUIZSimpson Diversity Index Calculator
A community with many species spread evenly is more diverse than one that a single species dominates,…
QUIZSodium-Potassium Pump
Cells spend a large share of their energy on the sodium potassium pump, which uses ATP to push three…
QUIZSugar Factory (Photosynthesis Simulator)
Photosynthesis turns light energy into sugar. The light-dependent reactions in the thylakoid membrane…
QUIZVocab Studio
Biology carries a heavy technical vocabulary, and terms learned once fade quickly without review. This…
QUIZWater Properties Explorer
Water behaves strangely for such a small molecule, and life depends on it. Its polar structure lets…