7. A protein is a long strand of assembled in the . a. amino acids—nucleus
b. amino acids—ribosomes
c. RNA—nucleus
d. RNA—ribosomes

8. Each amino acid is coded for by .

a. a single DNA base
b. a sequence of three RNA molecules
c. a sequence of three DNA bases
d. a sequence of three proteins

9.What is NOT true about RNA?

a. It stands for ribonucleic acid.
b. It helps DNA make proteins.
c. It has all of the same bases as DNA.
d. There are two types: messenger RNA and transfer RNA.

What food can provide the body with a quick source of the energy needed to carry out cell functions (a) whole grain bread (b) ground hamburger (c) vegetable oil (d) whole milk

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.