Microbial Genetics – Part 1

The energy to drive the process of DNA replication is supplied by

Okazaki fragments are

completed portions of the discontinuous DNA strand having RNA primers on each side.
portions of the discontinuous strand that have not been completed by DNA polymerase III.
portions of the continuous strand that still have RNA primers bound to the DNA nucleotides.
completed portions of the discontinuous strand that have been joined by ligase.

During the replication of bacterial DNA, which enzyme functions to remove RNA primer molecules and replace them with DNA nucleotides?

The replication of bacterial DNA is said to be discontinuous because

DNA polymerase III can only add new nucleotides to the nucleoside that moves from 5' to 3', not the one that moves from 3' to 5'.
DNA polymerase III can only add new nucleotides to the nucleoside that moves from 3' to 5', not the one that moves from 5' to 3'.
DNA polymerase I can only add nucleotides to the nucleoside that moves from 5" to 3".
Ligase can only fill gaps on the nucleoside that moves from 5' to 3'.

True or false. Both bacteria and eukaryotes use histone proteins to package their DNA.

Bacterial chromosomes differ from eukaryote chromosomes in which of these ways?

Bacterial chromosomes are circular, while eukaryote chromosomes are linear.
Bacterial chromosomes are composed of RNA while eukaryote chromosomes are composed of DNA.
Bacterial chromosomes contain many more genes than eukaryote chromosomes.
Bacterial chromosomes are located in the nucleus of the cell, while eukaryote chromosomes are found in the cytoplasm.

Which of the following are correct examples of complementary base pairing on a DNA molecule?

Which of the following are called purines?

a. adenine and thymine

b. adenine and cytosine

c. adenine and guanine

d. guanine and cytosine

A sequence of nucleotide bases that code for a specific protein is called a(n)

The term genome refers to

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