DNA Test Review

In humans, where does DNA replication take place?

• Cytoplasm

• Nucleus

• Ribosome

• Vacuole

RNA from a bear is compared to RNA from a sunflower. Both will contain the

• sugar deoxyribose and the base thymine.

• sugar ribose and the base thymine.

• sugar deoxyribose and the base uracil.

• sugar ribose and the base uracil.

A DNA nucleotide could contain the following molecules:

• deoxyribose, cytosine, and a lipid.

• deoxyribose, thymine, and a phosphate group.

• ribose, uracil, and a polypeptide.

• ribose, adenine, and thymine.

The nitrogen bases of DNA are held together by

• weak peptide bonds.

• weak hydrogen bonds.

• strong hydrogen bonds.

• strong peptide bonds.

In nucleotides, the letters A, G, C, and T represent

• phosphate groups.

• nitrogen bases.

• deoxyribose sugars

• ribose sugars.

The cellular process of creating two new DNA molecules from one original copy is called replication. Which statement is the BEST description of this process?

• DNA opens up and RNA copies it.

• DNA opens up and completely unwinds to make two new molecules.

• DNA opens up and each strand is used as a template for making a new strand.

• RNA opens up the DNA and uses each strand as a template for a new strand.

What molecule is directly copied from DNA?

• tRNA

• rRNA

• mRNA

• sRNA

What is an example of a molecule produced by translation?

• glucose

• glycogen

• fatty acid

• polypeptide

which RNA type caries amino acids?

• tRNA

• rRNA

• mRNA

• Ribosome

The bond between amino acids is called

• covalent

• hydrogen

• ionic

• peptide