In the passive processes of simple diffusion and osmosis, substances and water move down their concentration gradients, moving from areas of higher concentrations to areas of lower concentrations.

a. true
b. false


a. true

Biology & Microbiology

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Nitrogen is reduced in four cycles

What will be an ideal response?

Biology & Microbiology

Kinesis is

A. a movement toward a stimulus. B. a movement away from a stimulus. C. any movement in response to a stimulus, but not necessarily toward or away. D. a movement. E. any movement away from an object.

Biology & Microbiology

In an ideal, unlimited environment, a population's growth follows a(n) ________ model

A) exponential B) density-dependent C) logistic D) boom-and-bust

Biology & Microbiology

As a by-product of photosynthesis, what percentage of the Earth's atmosphere is oxygen?

A) 31 percent B) 21 percent C) 10 percent D) 41 percent E) 50 percent

Biology & Microbiology