DNA Replication

Front

Which of the following correctly pairs the DNA replication enzyme with its function? Options: 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' end.

Back

Topoisomerases work ahead of the replication fork to prevent supercoiling.

Front

The method of DNA replication is known as:

Dispersive

,

Semi-conservative

,

Conservative

,

Complementary

Back

Semi-conservative

Front

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

Nuclease

,

Primase

,

Helicase

,

DNA polymerase III

Back

Helicase

Front

Bacterial chromosome...

Back

has circular DNA

Front

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

Back

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

Front

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

Back

Thymine

Front

What prevents DNA strands from reannealing at the replication fork?

Back

Single-stranded binding proteins

Front

Which enzyme joins together Okazaki fragments?

Back

Ligase

Front

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

Back

3'-TACGAGTCGA-5'

Front

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

Back

S