Unit 4 Review

What is "A"?

• Helicase

• Primase

• Topoisomerase

• DNA Polymerase

What type of synthesis is the top strand?

• Lagging

• Leading

• Continuous

• Discontinuous

Is "E" a 3' or 5' end?

• 3'

• 5'

A genome has 10% T nucleotides. What percentage of the genome is C nucleotides?

• 10%

• 80%

• 40%

• 20%

As you've learned, the BCR-ABL mutation produces a constitutively active enzyme that promotes uncontrolled white blood cell growth and division. The BCR-ABL mutation is an example of what?

• Tumor-Suppressor Gene

• Oncogene

• Proto-Oncogene

• Caspase

How many pairs of chromosomes do humans typically have?

• 23

• 46

• 12

• 92

DNA replication occurs during which phase of the cell cycle?

• G1 phase

• S phase

• Prophase

• Telophase

The figure show two base pairs in a DNA double helix. We know that the top basepair (green and purple) must be a _____ basepair, while the bottom (yellow and orange) must be a _____ basepair.

• A-T , C-G

• C-G , A-T

• C-G, A-U

• Not enough information is given

Which phase of the cell cycle is the longest?

• Prophase

• Anaphase

• Interphase

• Cytokinesis

What is shown in this picture?

• 1 unduplicated chromosome

• 1 duplicated chromosome

• 2 chromosomes

• 2 duplicated chromosomes