Unit 2: Cell Cycle

Question 1

How do chromosomes line up during metaphse?

Answer 1

In a single file line

Question 2

What returns during telophase?

Answer 2

• Nuclei
• Nucleoli

Question 3

During anaphase, when the sister chromatids detach and move to opposite poles of the cell, what are the DNA molecules now called?

Answer 3

daughter chromomsomes

Question 4

Which phase is also known as the away phase?

Answer 4

Anaphase

Question 5

Which phase is known as the middle phase?

Answer 5

metaphase

Question 6

What are the three main phases of the cell cycle?

Answer 6

• Interphase
• M phase (mitosis)
• C phase (cytokinesis)

Question 7

Which form of DNA is long and thin?

Answer 7

Chromatin

Question 8

What splits at the beginning of anaphase?

Answer 8

centromeres

Question 9

What disappears during prophase of mitosis?

Answer 9

Nucleus

and

nucleolus

Question 10

What happens to the DNA during telophase?

Answer 10

Uncondenses/unwinds back into the chromatin long and thin form?

Question 11

During which phase of interphase does the DNA get copied?

Answer 11

S phase

Question 12

What moves the chromosomes to the equator during metaphase?

Answer 12

spindle fibers

Question 13

Which phase of mitosis takes the longest and why?

Answer 13

Prophase because the DNA has to condense into the chromosome form.

Question 14

What does the DNA coil around to form a sister chromatid?

Answer 14

histone proteins

Question 15

What is the cell called at the beginning of the cell cycle?

Answer 15

Parent Cell

Question 16

Describe the activity of the centrioles during prophase

Answer 16

• Migrate to opposite poles of the cell.
• grow spindle fibers

Question 17

During which phase of interphase are the organelles doubled?

Answer 17

G2 phase

Question 18

During which phase of mitosis does DNA turn into the chromatin form?

Answer 18

Telophase

Question 19

What type of cells go through the cell cycle?

Answer 19

Somatic cell

or

diploid cells

Question 20

During which phase of the cell cycle does the nucleus divide into two?

Answer 20

M phase or mitosis

Question 21

During which phase of mitosis do the DNA molecules form chromosomes?

Answer 21

Prophase

Question 22

Which form of DNA is condensed?

Answer 22

Chromosome

Question 23

What is each half of a chromosome called?

Answer 23

sister chromatid

Question 24

During which phase of the cell cycle does the cell split into two daughter cells?

Answer 24

C phase or cytokinesis

Question 25

What is the center of the cell also known as?

Answer 25

• Equator
• Equatorial plate
• Metaphase plate

Question 26

What are the cells called at the conclusion of cytokinesis?

Answer 26

Daughter cells

Question 27

What are the three phases of interphase?

Answer 27

• G1
• S
• G2

Question 28

What is the human diploid number?

Answer 28

2n=46

Question 29

During which phase of interphase does the cell enlarge?

Answer 29

G1

Question 30

Which organelle do spindle fibers grow out of?

Answer 30

centrioles