How does the nucleus control which proteins are made by the ribosomes? 1. It controls which genes get used.

2. It controls the number of ribosomes.

3. It controls the speed with which proteins are made.

4. It controls the order in which proteins are made.

it controls genes that get used.

Explanation:

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck