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)