The process by which water crosses a selectively permeable membrane is called a) osmosis. b) mitosis. c) meiosis. d) active transport.

Ascientist separates a population of mice into two groups. what would most likely increase the rate of speciation in this population. a. teach the two groups different tricks b. allow the two groups to breed with each other c. put the two groups in different environment d. have the two groups live in identical ecosystems

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?