Plant cells do not contain contractile vacuoles. what happens when a plant is watered? the cells swell. the cells shrink. the cells stay the same size.

Why do mutations in genes affect traits? o a. genes determine what type of mutagens an organism has. o b. genes produce proteins that cause traits. o c. genes affect how many chromosomes an organism has o d. genes code for carbohydrates that influence traits.

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what