What describes the movement of substances down their concentration gradients?

A. Active transport
B. Saturation
C. Diffusion
D. Bulk transport


Answer: C

Biology & Microbiology

You might also like to view...

The cyclic nitrogenous base used in transcription, uracil, is a ________.

A. purine B. porphyrin C. protein D. pyrimidine

Biology & Microbiology

Which is true of the following reaction: Pi + ADP -> ATF?

A. It has a change in free energy that is less than 0. B. It has a change in free energy that is greater than 0. C. It can be used to drive endergonic reactions. D. It yields energy. E. It has a change in free energy that is greater than 0, and hence can be used to drive endergonic reactions.

Biology & Microbiology

The formation of a cyst enables a protozoan to

a. move b. synthesise protein c. survive in the external environment d. increase rapidly in number

Biology & Microbiology

During the Gram stain procedure, a Gram _________ cell will be purple after the addition of Crystal Violet, and clear after the decolorization step.

A) Negative B) Positive

Biology & Microbiology