Unit 4 Practice Questions

The enzyme used to separate the double helix into 2 single strands is:

• Helicase

• DNA polymerase

• Gyrase

• Lipase

Which of the following complementary base pairs are correct?

• A-G

• C-A

• T-C

• G-C

Which of the following best describes a DNA molecule?

• made of amino acids

• double helix strands

• contains Uracil

• Does not contain hydrogen bonds

Where does DNA replication take place?

• Nucleus

• Ribosome

• Cytoplasm

• Golgi Body

An enzyme that adds complementary nucleotides to the template strand of the unzipped double helix until the entire molecule has been replicated.

• RNA Polymerase

• DNA Polymerase

• Helicase

• Ligase

DNA replication results in two DNA molecules,

• each one with two original strands

• each one with two new strands

• each one with one new strand and one original strand

• one with two new strands and the other with two original strands

DNA is a polymer made of monomers (building blocks) called:

• Amino acid

• Ribose

• Fatty acid

• Nucleotides

What are the 3 parts of a nucleotide?

• Sugar, Phosphate, Nucleotide

• Sugar, Potassium, Nitrogen Base

• Nitrogen, Phosphate, Nucleotide

• Nitrogen base, phosphate, sugar

DNA Replication is called "semi-conservative" because it saves, or conserves, what?

• part of the old strand of DNA

• energy

• the new nitrogen bases

• the new sugars and phosphates

The two sides of the DNA ladder run ______________ to each other.

• Parallel

• Anti-parallel

• Perpendicular

• Neutral