cell cycle

Question 1

What is the cell cycle?

Answer 1

The series of events that lead to cell division and replication

The cell cycle is crucial for growth and repair in multicellular organisms.

Question 2

What are the stages of the cell cycle?

Answer 2

1. Interphase
2. Mitosis
3. Cytokinesis

Each stage has specific functions and processes.

Question 3

What occurs during the G1 phase of interphase?

Answer 3

Cell growth and normal function

G1 is the first phase of interphase, focusing on growth.

Question 4

What happens during the S phase of interphase?

Answer 4

DNA replication

This phase is critical for ensuring each daughter cell receives an identical set of chromosomes.

Question 5

What is the purpose of the G2 phase in interphase?

Answer 5

Preparation for mitosis

In G2, the cell checks for DNA damage and prepares for division.

Question 6

What is mitosis?

Answer 6

Division of the nucleus

Mitosis ensures each daughter cell receives an equal and complete set of chromosomes.

Question 7

List the phases of mitosis in order.

Answer 7

• Prophase
• Metaphase
• Anaphase
• Telophase

Each phase has distinct activities that lead to the separation of chromosomes.

Question 8

What occurs during prophase?

Answer 8

Chromosomes condense and spindle fibers form

This marks the beginning of mitosis.

Question 9

What happens during metaphase?

Answer 9

Chromosomes align at the cell’s equator

This alignment ensures proper separation during the next phase.

Question 10

What occurs during anaphase?

Answer 10

Chromosomes are pulled apart to opposite sides

This ensures that each daughter cell will have the correct number of chromosomes.

Question 11

What happens during telophase?

Answer 11

Nuclear membranes form around each set of chromosomes

This phase marks the near end of mitosis.

Question 12

What is cytokinesis?

Answer 12

Division of the cytoplasm, resulting in two daughter cells

Cytokinesis completes the cell division process.

Question 13

What role do checkpoints play in the cell cycle?

Answer 13

Ensure the cell is ready to proceed to the next phase

Checkpoints help prevent errors that could lead to cancer.

Question 14

True or False: Cancer can occur when cell cycle regulation is disrupted.

Answer 14

True

Disruption can lead to uncontrolled cell division.

Question 15

Fill in the blank: The cell cycle includes checkpoints for _______ integrity checks.

Answer 15

[DNA]

These checkpoints are essential for maintaining genomic stability.