Practice Test DNA Structure and Replication

Name

Tags

NGSS.2-LS4-1

How is the DNA of a mouse different from the DNA of a snake?

• Only the DNA of the mouse contains nitrogen bases.
• The DNA molecules have different base sequences.
• The DNA of a mouse does not contain adenine.
• Only the DNA of a snake contains thymine.

What forms the backbone of DNA?

• a nucleotide
• a sugar
• both A and B
• neither A nor B

Use the image to answer the question.

• A
• B
• C
• D

Tags

NGSS.HS-LS3-1

Which of these follows the principle of base pairing?

• adenine-adenine
• adenine-thymine
• guanine-thymine
• purine-purine

How much of the DNA is replicated during each DNA replication?

• half (one of the two strands)
• as much as is needed, depending on certain factors
• all of the DNA
• only small regions (genes) of the DNA

What are the names of each DNA strand during replication?

• forward and backward
• up and down
• leading and lagging
• complete and fragmentary

The genetic code of a nucleotide can be analogous to

• a numeric code
• letters forming words
• a sign language code
• numbers forming equations

If a sequence on one DNA strand reads A-T-C-C-T-G-C-A, what will the complementary strand sequence read?

• A-T-C-C-T-G-C-A
• G-C-T-T-C-A-T-G
• C-G-A-A-G-T-A-C
• T-A-G-G-A-C-G-T

Answer Part A of the question using the image.

• A
• B
• C
• D

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-2