DNA Replication & Protein Synthesis

If a DNA molecule contains 20% thymine, how much guanine would be present?

• 10%

• 20%

• 30%

• 80%

Which sequence of DNA bases would pair with this strand:

ATG TGA CAG

• ATG TGA CAG

• GTA AGT GAC

• TAC ACT GTC

• CAT TCA CTG

Which of the following best describes a DNA molecule?

• double helix

• made of amino acids

• contains ribose

• contains uracil

Which of the following units are repeatedly joined together to form a strand of DNA?

• amino acids

• ribose

• nucleotides

• polypeptides

Guanine bonds with

• adenine.

• cytosine.

• guanine.

• thymine.

• uracil.

Which two parts form the sides (backbone) of the DNA ladder?

• deoxyribose sugar and adenine

• deoxyribose sugar and a hydrogen bond

• deoxyribose sugar and ribose sugar

• deoxyribose sugar and phosphate

What are the three components of a nucleotide?

• sugar, carbon, nitrogen base

• sugar, phosphate, nitrogen base

• amino acid, phosphate, sugar

• amino acid, phosphate, nitrogen base

The enzyme that unzips DNA for replication is

• helicase.

• DNA polymerase.

• synthase.

• ligase.

What is the difference between DNA and RNA in terms of bases?

• RNA contains uracil in place of thymine.

• RNA contains uracil in place of guanine.

• RNA contains cytosine in place of thymine.

• RNA contains cytosine in place of adenine.

What is created by translation?

• DNA

• tRNA

• mRNA

• protein