California State University, Fullerton » Biology » Biology 251 - Genetics » Spring 2021

Question #1

The genetic code has ____________ codons for the 20 amino acids found in proteins.

A. 50

B. 61

C. 45

D. 64

E. 20

Question #2

The triplet codon spacing defines _____________ in the mRNA that encode a polypeptide.

A. anticodons

B. transcription units

C. translation brackets

D. reading frames

E. exons

Question #3

A protein made up of only one polypeptide chain shows quaternary structure.

A. False

B. True

Question #4

Protein structures like alpha-helix and beta sheets are examples of ____________ structure.

A. primary

B. tertiary

C. secondary

D. quaternary

Question #5

In molecular biology, it possible to express gene from one organism in another because:

A. the genetic code is redundant.

B. the genetic code is universal.

C. there are only 20 amino acids.

D. the genetic code is degenerate.