Mitosis & Cell Cyle

Question 1

What is mitosis?

Answer 1

Mitosis is the process of cell division that results in two genetically identical daughter cells.

Question 2

True or False: Mitosis occurs only in prokaryotic cells.

Answer 2

False: Mitosis occurs in eukaryotic cells.

Question 3

What are the main stages of the cell cycle?

Answer 3

The main stages of the cell cycle are Interphase, Mitosis, and Cytokinesis.

Question 4

Fill in the blank: The phase where the cell grows and duplicates its DNA is called _____ .

Answer 4

Interphase

Question 5

What is the purpose of the G1 phase in the cell cycle?

Answer 5

The G1 phase is for cell growth and preparation for DNA replication.

Question 6

What happens during the S phase of the cell cycle?

Answer 6

During the S phase, DNA is replicated.

Question 7

Which phase follows the S phase?

Answer 7

The G2 phase.

Question 8

What occurs during prophase?

Answer 8

During prophase, chromosomes condense and become visible, the nuclear envelope breaks down, and spindle fibers begin to form.

Question 9

True or False: During metaphase, chromosomes align at the cell’s equatorial plane.

Answer 9

True.

Question 10

What is the function of spindle fibers?

Answer 10

Spindle fibers help separate chromosomes during mitosis.

Question 11

What key event occurs during anaphase?

Answer 11

Sister chromatids are pulled apart to opposite poles of the cell.

Question 12

During which phase does the nuclear envelope re-form?

Answer 12

During telophase.

Question 13

What is cytokinesis?

Answer 13

Cytokinesis is the division of the cytoplasm, resulting in two separate daughter cells.

Question 14

Fill in the blank: The checkpoint that ensures DNA is replicated correctly is the _____ checkpoint.

Answer 14

G2

Question 15

What role do cyclins play in the cell cycle?

Answer 15

Cyclins regulate the progression of the cell cycle by activating cyclin-dependent kinases (CDKs).

Question 16

What is the role of checkpoints in the cell cycle?

Answer 16

Checkpoints ensure that the cell is ready to proceed to the next phase and prevent errors.

Question 17

True or False: Apoptosis is a process that occurs during the cell cycle.

Answer 17

False: Apoptosis is programmed cell death, not a phase of the cell cycle.

Question 18

What is the difference between mitosis and meiosis?

Answer 18

Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.

Question 19

What is a chromatid?

Answer 19

A chromatid is one of two identical halves of a replicated chromosome.

Question 20

During which phase do cells spend the majority of their time?

Answer 20

Cells spend the majority of their time in Interphase.

Question 21

What happens to the chromosome number during mitosis?

Answer 21

The chromosome number remains the same; it is duplicated and then equally divided.

Question 22

Fill in the blank: The phase of the cell cycle where the cell prepares for division is called _____ .

Answer 22

M phase

Question 23

What happens to the nucleolus during prophase?

Answer 23

The nucleolus disappears during prophase.

Question 24

What type of cells undergo mitosis?

Answer 24

Somatic cells undergo mitosis.

Question 25

What is the significance of the G0 phase?

Answer 25

The G0 phase is a resting state where cells are not actively preparing to divide.

Question 26

What is meant by ‘sister chromatids’?

Answer 26

Sister chromatids are two identical copies of a single chromosome, connected at the centromere.

Question 27

True or False: Mitosis is a form of asexual reproduction.

Answer 27

True.

Question 28

What happens during the G2 phase?

Answer 28

During the G2 phase, the cell continues to grow and prepares for mitosis.