1. Which of the following occurs after mRNA is transcribed?

a. it remains in the nucleus
b. it becomes a part of the nucleus
c. it enters the cytoplasm and moves toward ribosomes
d. it leaves the cytoplasm through the cell membrane

2. Which of the following types of RNA carries genetic instructions for building a specific protein?

a. rRNA only
b. mRNA and tRNA
c. tRNA and rRNA
d. mRNA only

3. A cell is lacking in its supply of amino acids. Which of the following will occur?

a. mRNA will not be formed because enzymes may not be present
b. the ribosomes will not work properly because there will be no proteins
c. tRNA may not be able to fulfill its job
d. all of the above