$$C_{G_2$} = 2 \times C_{G_1$}$$

Question 1

Which of the following best describes the difference between somatic cells and gametic cells in humans?

Accepted Answer

Somatic cells are diploid and contain two sets of chromosomes, while gametic cells are haploid and contain one set.

Question 2

During which phase of mitosis do sister chromatids separate and move toward opposite poles of the cell?

Accepted Answer

Anaphase

Question 3

What is the primary function of the mitotic spindle during cell division?

Accepted Answer

To separate sister chromatids and ensure equal distribution to daughter cells

Question 4

Which checkpoint in the cell cycle ensures that DNA is undamaged and fully replicated before mitosis begins?

Accepted Answer

G\_2 checkpoint

Question 5

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

Accepted Answer

Metaphase

Question 6

Which equation correctly represents the number of chromosomes in a human somatic cell after mitosis?

Accepted Answer

$$2n = 46$$

Question 7

What is the main 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 8

Which structure is responsible for organizing microtubules during mitosis?

Accepted Answer

Centrosome

Question 9

In prokaryotic cells, what is the process by which the cell divides called?

Accepted Answer

Binary fission

Question 10

Which of the following best explains the role of growth factors in the cell cycle?

Accepted Answer

They stimulate cells to enter the cell cycle and divide.

Question 11

What is the function of checkpoints in the cell cycle?

Accepted Answer

To ensure that critical events such as DNA replication and chromosome alignment are completed correctly before the cell proceeds.

Question 12

Which phase of the cell cycle is characterized by cell growth and preparation for DNA replication?

Accepted Answer

G\_1 phase

Question 13

What is the name given to molecules that regulate the progression of the cell cycle?

Accepted Answer

Cyclins

Question 14

Which of the following best describes density-dependent inhibition?

Accepted Answer

Cells stop dividing when they come into contact with other cells.

Question 15

What is apoptosis and how does it relate to cancerous cells?

Accepted Answer

Apoptosis is programmed cell death; cancerous cells often evade apoptosis, allowing uncontrolled growth.

Question 16

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

Accepted Answer

Malignant tumors invade surrounding tissues and can metastasize, while benign tumors do not.

Question 17

Which equation represents the DNA content of a cell in G\_2 phase compared to G\_1 phase?

Accepted Answer

$$C_{G_2$} = 2 	imes C_{G_1$}$$

Question 18

Which of the following is true about the M checkpoint in the cell cycle?

Accepted Answer

It ensures that all chromosomes are properly attached to the spindle before anaphase begins.

Question 19

A cell is observed to be dividing uncontrollably and does not respond to density-dependent inhibition. What is the most likely explanation?

Accepted Answer

The cell has become cancerous due to loss of cell cycle regulation.

Question 20

Which of the following best describes anchorage dependence in cell division?

Accepted Answer

Cells must be attached to a substrate to divide.

The Cell Cycle: Study Guide and Key Concepts

Study Guide - Practice Questions