How do active and passive transport help a cell respond to changes in the environment?

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.

Are gametes exactly the same? explain why or why not?