Question 1

Which of the following best describes the difference between diploid and haploid cells?

Accepted Answer

Diploid cells contain two sets of chromosomes per nucleus, while haploid cells contain one set of chromosomes per nucleus.

Question 2

If a human cell has a diploid number ($$2n) of 46$$, what is the haploid number ($$n$$)?

Accepted Answer

$$n = 23$$

Question 3

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase of Interphase

Question 4

Which of the following events occurs during metaphase of mitosis?

Accepted Answer

Chromosomes align at the metaphase plate.

Question 5

What is the primary difference between cytokinesis in animal cells and plant cells?

Accepted Answer

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

Question 6

Which checkpoint in the cell cycle is most critical for preventing the division of damaged cells?

Accepted Answer

G1 checkpoint

Question 7

A mutation causes a cell to lose anchorage dependence. What is a likely consequence?

Accepted Answer

The cell may divide uncontrollably, contributing to tumor formation.

Question 8

Which of the following best describes binary fission in prokaryotes?

Accepted Answer

The chromosome is duplicated, and the cell divides into two genetically identical daughter cells.

Question 9

Cancer cells often lose which two normal regulatory mechanisms of cell division?

Accepted Answer

Anchorage dependence and density-dependent inhibition

Question 10

A cell with a diploid number of 8 ($$2n = 8) $$undergoes mitosis. How many chromosomes will each daughter cell have?

Accepted Answer

$$8$$

Question 11

Which of the following is a key difference between benign and malignant tumors?

Accepted Answer

Malignant tumors can metastasize, while benign tumors do not.

Question 12

What is the role of cyclins and cyclin-dependent kinases (Cdks) in the cell cycle?

Accepted Answer

They regulate the timing of the cell cycle by forming active complexes at specific checkpoints.

Question 13

Which phase of mitosis is characterized by the separation of sister chromatids?

Accepted Answer

Anaphase

Question 14

A scientist observes a cell with condensed chromosomes aligned at the center of the cell. Which phase is this cell in?

Accepted Answer

Metaphase

Question 15

Which of the following best explains why cancer is associated with mutations?

Accepted Answer

Mutations can disrupt normal cell cycle regulation, leading to uncontrolled cell division.

Question 16

If a cell fails to pass the G1 checkpoint, what is the most likely outcome?

Accepted Answer

The cell enters the G0 phase and stops dividing.

Question 17

Which of the following is NOT a stage of mitosis?

Accepted Answer

Cytokinesis

Question 18

A researcher treats cells with a drug that prevents the breakdown of cyclin. What is the most likely effect on the cell cycle?

Accepted Answer

Cells may be unable to exit mitosis, leading to uncontrolled division.

Question 19

Which of the following scenarios best illustrates density-dependent inhibition?

Accepted Answer

Cells stop dividing when they form a complete single layer in a petri dish.

Question 20

A cell with 12 chromosomes undergoes meiosis. How many chromosomes will each gamete have?

Accepted Answer

$$6$$

Cell Division: Interphase, Mitosis, Cancer, and Meiosis

Study Guide - Practice Questions