7- Cell Division

Question 1

What is DNA stored as?

Answer 1

Chromatin

Question 2

Condensed form of DNA that is wrapped around proteins called histones

Answer 2

Chromatin

Question 4

Dense packaging of chromatin, existing during mitosis and meiosis

Answer 4

Chromosome

Question 4

What region are the two identical sister chromatids linked together?

Answer 4

Centromere

Question 5

One half of a duplicated chromosome

Answer 5

Chromatid

Question 6

Two sets of chromosome (one from each parent), form a pair called

Answer 6

Homologous Chromosomes

Question 7

What are the MTOCs in animal cells that are not found in plant cells?

Answer 7

Centrosomes

Question 9

The microtubules that emerge from the centrosome

Answer 9

Spindle Fibers

Question 9

During cell division, spindle fibers do not directly attach to the chromosomes. Where do they attach instead?

Answer 9

Kinetochores

Question 9

Proteins that are located on the centromere region of the chromosome

Answer 9

Kinetochores

Question 10

What are the 2 different germ cells associated with Mitosis and Meiosis, respectively?

Answer 10

Somatic and Germ Cells

Question 11

The cells in the body that are NOT used for reproduction (EX: Heart, skin, hair)

Answer 11

Somatic Cells

Question 12

The cells that produce gametes and are used for reproduction

Answer 12

Germ Cells

Question 13

What are the five phases of Mitosis?

Answer 13

1. Prophase
2. Prometaphase
3. Metaphase
4. Anaphase
5. Telophase (& Cytokinesis)

Question 15

Which phase of Mitosis involves genetic information (in the form of chromatin) condensing into chromosomes

Answer 15

Prophase

Question 17

What physically occurs in the cell during 1. Prophase of Mitosis?

Answer 17

• Nucleolus disappears
• Mitotic spindle begins to form
• Centrosomes begin to move towards opposite ends of the cell

Question 17

Which phase of Mitosis involves breakdown of the nuclear membrane?

Answer 17

Prometaphase

Question 18

What physically occurs in the cell during 2. Prometaphase of Mitosis?

Answer 18

• Chromosomes condense further
• Each chromatid is attached to a kinetochore
• Mitotic spindle further develops
• Spindle fibers begin to attach to kinetochores of chromosomes

Question 19

Which phase of Mitosis involves chromosomes being lined up across the center of the cell?

Answer 19

Metaphase

Question 20

What is the area of where the chromosomes are neatly organized?

Answer 20

Metaphase Plate

Question 21

What physically occurs in the cell during 3. Metaphase of Mitosis?

Answer 21

• Centrosomes have reached opposite ends of the cell
• Mitotic spindle is fully developed
• All chromosomes are attached to spindle fibers via kinetochores
• Karyotyping is performed here

Question 22

Which phase of Mitosis involves the shortening of microtubules?

Answer 22

Anaphase

Question 23

What physically occurs in the cell during 4. Anaphase of Mitosis?

Answer 23

• Chromatids are pulled apart
• Each sister chromatid are pulled apart
• Individual chromosomes form
• Chromosomes are pulled to opposite ends of the cell

Question 25

Which phase of Mitosis involves the reappearance of original cell

Answer 25

Telophase

Question 26

What physically occurs in the cell during 5. Telophase of Mitosis?

Answer 26

• Nucleoli reappear
• Two nuclear envelopes develop
• Chromosomes decondense back into chromatin
• Spindle fibers disappear

Answer 27

Cytokinesis