DNA Replication

Which of the following correctly pairs the DNA replication enzyme with its function

• Topoisomerases work ahead of the replication fork to prevent supercoiling.

• DNA polymerase I opens up the DNA at the replication fork.

• Helicase seals gaps between DNA fragments.

• DNA primase extends primers by adding nucleotides to the 3'3′3, prime end.

The method of DNA replication is known as:

• Dispersive

• Semi-conservative

• Conservative

• Complementary

The enzyme used to separate the double helix into 2 single strands is:

• Nuclease

• Primase

• Helicase

• DNA polymerase III

Bacterial chromosome....

• has linear DNA

• located inside nucleus

• associates with large amount of proteins

• has circular DNA

In a semi-conservative model of DNA replication, which of the following is true?

• The daughter DNA molecule consists of 2 parent strands

• The daughter DNA molecule consists of an uneven mix of old and new strands

• The daughter DNA molecule consists of 1 parent strand and 1 new strand

• The daughter DNA molecule consists of 2 newly formed strands

In a molecule of double-stranded DNA, the amount of Adenine present is always equal to the amount of

• Cytosine

• Guanine

• Thymine

• Uracil

What prevents DNA strands from reannealing at the replication fork?

• Helicase

• Topoisomerase

• Ligase

• Single-stranded binding proteins

Which enzyme joins together Okazaki fragments?

• DNA pol I

• Helicase

• Ligase

• Primase

The DNA sequence of the parent strand is 5'-ATGCTCAGCT-3'. What is the sequence of the daughter strand?

• 3'-UACGAGUCGA-5'

• 5'-UACGAGUCGA-3'

• 3'-TACGAGTCGA-5'

• 5'-TACGAGTCGA-3'

In what phase of the cell cycle does DNA replication take place?

• G1

• G2

• S

• M