LABCell Diffusion Explorer
Cells stay alive by controlling what crosses the membrane. Some molecules drift down a concentration…
Topic
Calculations
Mathematical calculations in biology enable quantitative analysis of biological phenomena, from population growth rates to enzyme kinetics. These computational skills help predict outcomes, test hypotheses, and model complex biological systems.
7 interactives
LAB
QUIZChi-Square Statistical Activity
Real biological data never match a prediction exactly, so biologists need a way to judge whether a…
QUIZDAPA (Data Analysis Practice App)
Biology runs on evidence, and evidence arrives as messy data that has to be organized, graphed and…
CALCGene Mapping Interactive
Genes that sit close together on the same chromosome tend to be inherited together, and crossing over…
QUIZPopulation Growth Calculator
Populations grow when births outpace deaths, but no population grows without limit forever. The…
QUIZSimpson Diversity Index Calculator
A community with many species spread evenly is more diverse than one that a single species dominates,…
LABWater Potential Calculator
Water moves into and out of plant cells by osmosis, always travelling from higher to lower water…