Chp. 8 Mitosis

Question 1

Best describes mitosis?

Answer 1

The process by which somatic cells divide to produce genetically identical cells.

Question 2

What occurs during prophase of mitosis?

Answer 2

The nuclear membrane breaks down, and chromosomes condense.

Question 3

During which phase of mitosis do sister chromatids separate?

Answer 3

Anaphase

Question 4

Which of the following cells would most likely be undergoing mitosis?

Answer 4

A skin cell

Question 5

Mitosis occurs in which type of cells?

Answer 5

Somatic cells

Question 6

Which organelle is responsible for organizing Microtubules during mitosis?

Answer 6

Centrosome

Question 7

The mitotic spindle fibers attach to which part of the chromosome?

Answer 7

Centromere

Question 8

The function of mitosis is to produce

Answer 8

Two genetically identical daughter cells from a single parent cell.

• growth
• tissue repair & regeneration
• asexual reproduction
• maintenance of genetic stability

Mitosis is crucial for maintaining healthy tissues and organ throughout an organism’s life.

Question 9

What occurs during the G1 phase of the cell cycle?

Answer 9

Cell growth and preparation from DNA replication

Question 10

The S phase of the cell cycle is crucial for which of the following reasons?

Answer 10

DNA is replicated to ensure each daughter cell receives a full set of chromosomes

Question 11

Which stage of mitosis is characterized by the alignment of chromosomes along the metaphase plate?

Answer 11

Metaphase

Question 12

What is the significance of the G2 phase in the cell cycle?

Answer 12

The cell checks for DNA damage and ensures all chromosomes have been replicated

Question 13

During telophase, what key events occur?

Answer 13

The nuclear envelop reforms around each set of chromosomes

Question 14

What is the significance of abnormal mitosis in cancer cells?

Answer 14

Cancer cells bypass regulatory checkpoints, leading to uncontrolled cell division

Question 15

A drug that disrupts spindle fiber formation would most likely inhibit which phase of mitosis?

Answer 15

Metaphase

Question 16

What is cytokinesis?

Answer 16

The division of the cytoplasm following mitosis.

Question 17

How does cytokinesis differ in plant cells compared to animal cells?

Answer 17

Animal cells form a cleavage furrow, while plant cells form a cell plate

Question 18

Which checkpoint in the cell cycle ensures that DNA is correctly replicated before the cell enters mitosis?

Answer 18

G2 checkpoint

Question 19

What role does p53 play int eh cell cycle?

Answer 19

Suppresses tumors by stopping the cell cycle if DNA damage is detected

Question 20

A pt is undergoing chemotherapy that targets rapidly diving cells. Why does this treatment affect cancer cells more than normal cells?

Answer 20

Cancer cells divide more rapidly and frequently than normal cells, making them more susceptible to drugs that target mitosis.

Question 21

What is aneuploidy, and how is it related to errors in mitosis?

Answer 21

A condition where cells have an abnormal number of chromosomes due to mitotic error

Question 22

During wound healing, which phase of mitosis is particularly important for replacing damaged cells?

Answer 22

Telophase

Question 23

What is the final product of mitosis?

Answer 23

Two genetically identical daughter cells

Question 24

In which phase of mitosis does the nuclear membrane re-form?

Answer 24

Telophase

Question 25

Which phase of mitosis immediately follows metaphase?

Answer 25

Anaphase

Question 26

Why is mitosis critical in the process of tissue repair after an injury?

Answer 26

It ensures that the new cells are genetically identical to the damaged cells they replace .

Question 27

During _____ the cell grows and replicates both its organelles and its chromosomes

Answer 27

Interphase

Question 28

During ______ both the contents of the nucleus and the cytoplasm are divided

Answer 28

The mitotic phase