1651. What is the rate of mutation per round of DNA replication?

A. 1 in 1,000 base pairs
B. 1 in 10,000 base pairs
C. 1 in 1,000,000 base pairs
D. 1 in 1,000,000,000 base pairs *

1652. Which of the subunits of RNA polymerase holoenzyme is responsible for promoter recognition?

A. The beta subunit
B. The sigma subunit *
C. The gamma subunit
D. The delta subunit

1653. Which of the following is an example of a missense mutation?

A. UAC TO UAG
B. AAA TO UAA
C. UGC TO UCC *
D. UAA TO UGA

1654. The structure of tRNA resembles a(n):

A. Cloverleaf *
B. L
C. A helix
D. B helix

1655. Which of the following is not a DNA base?

A. Thymine
B. Uracil *
C. Adenine
D. Guanine

1656. What provides the energy that drives the addition of nucleotides to a growing DNA chain during replication?

A. The release of a pyrophosphate
B. The hydrolysis of ATP
C. The hydrolysis of a pyrophosphate *
D. The hydrolysis of GTP

1657. What is the name of the molecule that is added to the 5 ends of eukaryotic RNA transcripts?

A. ATP
B. snRNP
C. GTP *
D. Phosphate

1658. What is the name of the enzyme responsible for helping change tRNA molecules?

A. Guanyl transferase
B. Polymerase
C. Helicase
D. Aminoacyl-tRNA synthase *

1659. Which of the following is not an RNA base?

A. Adenine
B. Uracil
C. Thymine *
D. Cytosine

1660. The strand on which DNA replication is continuous is called the :

A. Leading strand *
B. Lagging strand
C. Major strand
D. Minor Strand