Chapter 16: DNA Synthesis

What molecule holds instructions for the synthesis of proteins and copies itself before cell division?

• ATP synthase

• DNA

• RNA

• NAD

The genome of an organism is all of its

• proteins.

• RNA.

• characteristics.

• genetic material.

If you were watching a cell undergoing a doubling of the DNA in its nucleus, you would be observing

• protein synthesis.

• aerobic respiration.

• replication.

• photosynthesis.

The enzyme that unwinds DNA is

• helicase.

• transcriptase.

• DNA polymerase.

• ligase.

Mutations may be caused by

• errors in prokaryotic replication.

• exposure to chemicals.

• errors in eukaryotic replication.

• All answers are correct.

Apoptosis is also called

• replication.

• mitosis.

• programmed cell death.

• the cell cycle.

A discrete package of DNA and associated proteins in eukaryotes is a

• chromosome.

• nucleus.

• ribosome.

• Golgi body.

Eukaryotic chromosomes become visible with a light microscope before cell division because they

• become less tightly wound.

• become more tightly wound.

• increase in length.

• combine with RNA.

One of two identical attached copies of a replicated chromosome is called a

• centromere.

• chromosome.

• nucleosome.

• chromatid.

A part of a chromosome that attaches sister chromatids to each other defines the term

• nucleosome.

• centromere.

• histone.

• No answer is correct.