Cell Cycle
Mitosis
DNA
DNA Replication
Misc.
100

What happens during G1?

Cells grow

100

How many cells does mitosis end with?

2

100

What stores genetic information in a cell?

DNA

100

Name the 3 enzymes involved in DNA replication.

Helicase, DNA polymerase, DNA ligase

100

Which scientists were the first to describe the structure of DNA?

Watson and Crick

200

The cell makes an extra copy of its DNA during which phase of interphase?

S phase

200

After mitosis, the number of chromosomes in each of the 2 new cells is (pick one):

a. Equal to the number in the original cell

b. Half the number in the original cell

a. Equal to the number in the original cell

200

Cytosine pairs with _____________

Guanine

200

Which enzyme unwinds the DNA by breaking the hydrogen bonds that hold the bases together?

Helicase

200

Which tumor is worse: benign or malignant?

Malignant

300

What is the correct order for the steps of interphase?

G1, S, G2

300
Give two reasons why cells must divide.

1. Growth and development of an organism

2. Replace/repair old/damaged cells

300

What are the 3 things that make up a nucleotide?

1. Deoxyribose sugar

2. Phosphate group

3. Nitrogen-containing base

300

During DNA replication, each strange of DNA serves as a _______________ for a new strand.

Template

300

The uncontrolled division of cells is called what?

Cancer

400

What is the correct order for the stages of mitosis?

Prophase, metaphase, anaphase, telophase

400

Explain what the spindle fibers do during anaphase.

Spindle fibers pull the sister chromatids apart and move them toward the centrioles

400

What are the weak bonds that hold the nitrogen bases together?

Hydrogen bonds

400

What would the new strand of DNA be after replication?

AAG   CTG   CAT

TTC    GAC    GTA

400

What causes cancer?

Defects in the genes that regulate cell growth and division
500

What is it called when the cytoplasm completely divides and there are 2 daughter cells?

Cytokinesis

500

Draw what the cell looks like during metaphase

Chromosomes lined up in middle and spindle fibers attached

500

DNA can be around 2 meters long, so how does it fit into our cells?

It is coiled up and made into a chromosome

500

Explain what DNA ligase does during DNA replication.

Sticks the newly made DNA fragments together to form a complete strand of DNA

500
Draw a duplicated chromosome and label the centromere and chromatids.

X shape, centromere in middle and 2 chromatids labeled