Chapter 8 MCQ Review

The main difference between the four nucleotides that make up DNA is that they have different

• sugars

• uracil

• bonds

• bases

In humans, where does DNA replication take place?

• cytoplasm

• ribosome

• nucleus

• vacuole

During replication, the function of the enzyme DNA polymerase is to

• bind nucleotides together

• send messages

• locate tRNA

• locate replication sites

During transcription, what does messenger RNA do?

• It delivers DNA's instructions for making proteins.

• It constructs proteins out of random amino acids.

• It strings together two complementary RNA strands.

• It strings together two differing RNA strands.

In order to produce all the protein that a cell needs, transcription takes place

• on a gene segment over and over again

• using double stranded RNA

The central dogma states that information flows from

• RNA to DNA to polysaccharides

• DNA to RNA to proteins

• DNA to proteins to RNA

• DNA to polysaccharides to RNA

Where is messenger RNA "edited" into its final form?

• in the ribosomes

• in the nucleus

• in the anticodon

• in the cytoskeleton

Generally, mutations that affect a single gene occur during

• transcription

• replication

• translation

• operation

Mutations that can affect the offspring of an organism occur in what cell type?

• somatic

• germ

• blood

• brain

Combining the work of other scientists with their own research, Watson and Crick discovered that two strands of DNA join together to form a(n)

• nucleotide

• diaphragm

• double helix

• covalent bond