DNA Structure and Replication Practice

Did you open the document that goes with this assignment, which was linked in the assignment instructions on Canvas? If you haven't, go do that now then answer this question and continue.

• Yes

• No

The following sequence is the template strand of DNA about to be replicated:

ACT TGA CTA

Identify the complementary strand:

• ACT TGA CTA

• ATC AGT TCA

• TGA ACT GAT

• TAG TCA AGT

Adenine, Cytosine, Guanine, and Thymine are examples of...

• Sugars

• Nitrogenous bases

• Phosphate groups

• Nucleotides

Which of the following combinations include the 3 parts of ALL nucleotides?

• Adenine (A), guanine (G), and cytosine (C)

• Phosphate, sugar, adenine (A)

• Phosphate, lipid, nitrogen base

• Phosphate, sugar, nitrogen base

You have discovered that your DNA contains 23% adenine (A) and now you are curious how much guanine (G) you have in your DNA. Which of the following would be the correct percentage of guanine (G) in your DNA, knowing that you have 23% adenine (A)?

• 23%

• 77%

• 54%

• 27%

Which of the following best describes the shape of DNA?

• Single helix

• Double helix

• Helical

• Nucleotides

The following sequence is the template strand of DNA about to be replicated:

TAG TCA AGT

Identify the complementary strand:

• ACT TGA CTA

• ATC AGT TCA

• TGA ACT GAT

• TAG TCA AGT

Why do we need to replicate DNA?

• Because it benefits an organism to have extra DNA in the cell

• Because DNA gets damaged, so we need to make more DNA

• Because we need to make an extra copy of our DNA for cell division to produce identical cells

• Because we need extra DNA to pass on to our children

In a cell, base-pairs are able to be added successfully, but the parent DNA molecule is unable to be separated. Based on this information, which of the following molecules is most likely not functioning properly?

• Helicase

• DNA polymerase

• Mutation

• Deoxyribose sugar

If a cell’s DNA polymerase was prevented from working within a cell, which of the following would be the most likely result?

• The DNA would be replicated twice as fast

• The parent DNA would be split, but no matching nitrogen base pairs would be able to be added

• The strands of the parent DNA would not be successfully split apart

• DNA replication would become semiconservative