DNA Structure and Replication

DNA stands for:

• deoxyribonucleic acid

• dinitrogen acid

• double nucleic acid

• do not answer

Which of the following is not a DNA base?

• adenine (A)

• guanine (G)

• cytosine (C)

• histidine (H)

What is the complementary strand to this DNA sequence: ATACCGCTG

• TATGGCGAC

• ATACCGCTG

• CGCAATAGT

• GCGTTATCA

Nucleotides consist of all of the following except:

• a phosphate

• a sugar

• a base

• a nucleic acid

DNA is located in the _____ in eukaryotic cells.

• nucleus

• cytoplasm

• mitochondria

• ribosome

The enzyme that unzips DNA during replication is called:

• helicase

• zipase

• DNA polymerase

• ligase

At the end of replication, how many DNA molecules are there?

• 1

• 2

• 12

• 6

When DNA replication is complete, each DNA molecule consists of:

• one original strand and one new strand

• two new strands

• two original strands

• unzipped strands

Tags

NGSS.HS-LS3-2

What is the backbone of DNA made of?

• sugar and phosphate

• nitrogen bases

• sugar and nitrogen bases

• phosphate and nitrogen bases

What is the first step in DNA replication?

• DNA unzips

• bases are added

• sugar and phosphate are added

• sugar and bases are added