Which of the following describes organelle structures that plant and animal cells have in common? a) they both have ribosomes that are used to synthesize proteins and a cell membrane that serves as a selective barrier for the cell. b) they both have a central vacuole that stores water and food and mitochondria that releases energy from glucose molecules. c) they both have chloroplasts where conversion of light to chemical energy occurs and a cell membrane that serves as a selective barrier for the cell. d) they both have a cell wall that provides protection and support and a nucleus where dna is stored. (i think its a)

A) They both have ribosomes that are used to synthesize proteins and a cell membrane that serves as a selective barrier for the cell.

Explanation:

It is not B because animal cells do not have big vacuolas if they had any they are small, but it is common to have them in vegetal cells.

It is not C because animal cells do not have chloroplasts because they do not do photosynthesis its energy is taken by metabolizing nutrients from food.

It is not D because the animal cell does not have a cell wall. Is made principally of cellulose, a kind of carbohydrate, and its function is to protect the cell.

the answer is sex-linked recessive.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.