Review for unit exam

During DNA replication, a DNA strand that has the bases CTAGGT produces a strand with the bases:

• AGCTTG

• GATCCA

• TCGAAC

• GAUCCA

In both prokaryotes and eukaryotes, DNA replication happens

• before cell division.

• in the nucleus

• only to telomeres

• around the histones

What nucleotide is going to be opposite from thymine?

• adenine

• cytosine

• guanine

• uracil

During replication, what enzyme is responsible for building the complementary strand?

• histones

• nucleosomes

• DNA polymerase

• chromatin

In eukaryotes, DNA

• is located in the nucleus

• floats freely in the cytoplasm

• is located in the ribosomes

• is circular

What type of sugar is in DNA?

• glucose

• lactose

• deoxyribose

• ribose

Which of the following forms a base pair with guanine?

• uracile

• cytosine

• thymine

• adenine

Which of the following is a nucleotide found in DNA?

• ribose + phosphate group + thymine

• ribose + phosphate group + uracil

• deoxyribose + phosphate group + uracil

• deoxyribose + phosphate group + cytosine

What type of bonds hold the two nitrogen base pairs together in the middle of DNA?

• ionic

• polar

• hydrogen

• covalent

Which enzyme proofreads the new strands to make sure they are a copy of the original?

• DNA polymerase

• DNA amylase

• DNA primase

• DNA ligase