Mitosis: The Process of Cell Division - Interactive Learning Quizzes

Question 1

In mitosis, centromeres perform a critical function. Which of the following choices accurately describes their role?

Accepted Answer

Centromeres are located at the chromosome's center and facilitate the separation of sister chromatids during anaphase.

Answer

Centromeres are found on the short arms of chromosomes and assist in the initial attachment of sister chromatids.

Answer

Centromeres are positioned at the ends of chromosomes and aid in their connection to the spindle fibers.

Question 2

How is mitosis regulated, and what happens when it goes wrong?

Accepted Answer

CDK and cyclin control mitosis; malfunctions lead to abnormal cell division.

Answer

Centrosomes regulate mitosis; malfunctions cause spindle fiber issues.

Answer

Kinesin and dynein regulate mitosis; malfunctions cause chromosome misalignment.

Answer

Mitosis is unregulated and occurs spontaneously.

Question 3

Which of the following is the correct sequence of stages in mitosis?

Accepted Answer

Interphase, Prophase, Metaphase, Anaphase, Telophase, Interphase

Answer

Interphase, Prophase, Metaphase, Anaphase, Telophase

Answer

Prophase, Metaphase, Anaphase, Telophase, Interphase

Answer

Prophase, Metaphase, Anaphase, Telophase, Interphase

Question 4

What is the primary function of the spindle apparatus during mitosis?

Accepted Answer

To separate the chromosomes during anaphase

Answer

To replicate DNA

Answer

To facilitate cell membrane formation

Answer

To regulate gene expression

Question 5

Which of the following is NOT a characteristic of metaphase?

Accepted Answer

DNA replication occurs

Answer

Chromosomes align at the metaphase plate

Answer

Spindle fibers attach to kinetochores

Answer

Nuclear envelope disappears during metaphase

Question 6

What is the significance of cytokinesis in mitosis?

Accepted Answer

It divides the cytoplasm and organelles into two new cells

Answer

It initiates chromosome condensation

Answer

It ensures equal distribution of genetic material

Answer

It repairs damaged DNA

Question 7

Which process precedes mitosis?

Accepted Answer

Interphase

Answer

Anaphase

Answer

Metaphase

Answer

Telophase

Question 8

What is the purpose of the mitotic spindle?

Accepted Answer

To move chromosomes during cell division

Answer

To store genetic information

Answer

To synthesize proteins

Answer

To regulate cell metabolism

Question 9

What happens to the nuclear envelope during prophase of mitosis?

Accepted Answer

It breaks down

Answer

It remains intact

Answer

It forms the spindle apparatus

Answer

It condenses into chromosomes

Question 10

Which of the following proteins is a key regulator of the cell cycle?

Accepted Answer

Cyclin

Answer

Insulin

Answer

Hemoglobin

Answer

Collagen

Question 11

What is the ultimate goal of mitosis?

Accepted Answer

To produce two genetically identical daughter cells

Answer

To repair damaged cells

Answer

To increase the number of chromosomes in a cell

Answer

To promote cell growth

Question 12

Analyze the potential consequences of errors that can occur during mitosis, considering both their immediate and long-term effects.

Accepted Answer

Immediate: cell death or cell cycle arrest; Long-term: cancer or developmental abnormalities

Answer

Immediate: increased cell division; Long-term: tissue damage

Answer

Immediate: cell migration; Long-term: immune system dysfunction

Question 13

In which stage of mitosis do sister chromatids separate?

Accepted Answer

Anaphase

Answer

Prophase

Answer

Metaphase

Answer

Telophase

Question 14

What is the primary function of the mitotic spindle?

Accepted Answer

To separate sister chromatids

Answer

To condense chromosomes

Answer

To form the nuclear envelope

Answer

To synthesize new DNA

Question 15

Which of the following is NOT a characteristic of mitosis?

Accepted Answer

Reduction in chromosome number

Answer

Equal distribution of genetic material

Answer

Cytokinesis occurring concurrently

Answer

Formation of two genetically identical daughter cells

Question 16

Which of the following techniques is commonly used to study mitosis in living cells?

Accepted Answer

Microscopy

Answer

Flow cytometry

Answer

PCR

Answer

Southern blotting

Question 17

What is the primary function of the centrosome in mitosis?

Accepted Answer

Organization of microtubules and formation of spindle poles

Answer

DNA synthesis

Answer

Chromosome condensation

Answer

Regulation of cell cycle checkpoints

Question 18

The initial stage of mitosis, characterized by the condensation of chromosomes and the formation of the mitotic spindle, is called:

Accepted Answer

Prophase

Answer

Anaphase

Answer

Metaphase

Answer

Telophase

Question 19

During which phase of mitosis do the sister chromatids, exact copies of each other, separate and move towards opposite poles of the cell?

Accepted Answer

Anaphase

Answer

Prophase

Answer

Telophase

Answer

Metaphase

Question 20

Mitosis primarily serves to:

Accepted Answer

Ensure the equal distribution of genetic material to daughter cells during cell division.

Answer

Allow for the growth and repair of tissues.

Answer

Facilitate the transfer of genetic information between cells.

Question 21

A regulatory protein known as _________ controls the transition between the G1 and S phases of the cell cycle.

Accepted Answer

Cyclin-dependent kinase (CDK)

Answer

DNA polymerase

Answer

Histone acetyltransferase

Answer

Telomerase

Question 22

Which of the following is NOT a function of the spindle apparatus in mitosis?

Accepted Answer

Transcribing DNA

Answer

Moving chromosomes to the poles of the cell

Answer

Organizing the cytoplasm

Answer

Separating sister chromatids

Question 23

The primary function of centromeres during mitosis is to:

Accepted Answer

Attach sister chromatids together until anaphase, ensuring their separation during mitosis.

Answer

Regulate the transcription of genes involved in cell division.

Answer

Control the movement of chromosomes during mitosis.

Question 24

Damage to spindle fibers during mitosis can lead to:

Accepted Answer

Aneuploidy, a condition in which daughter cells have an abnormal number of chromosomes.

Answer

Cell senescence

Answer

Mitosis arrest

Answer

DNA damage

Question 25

In which phase of mitosis does the nuclear envelope, which surrounds the chromosomes, reform around the separated sets of chromosomes?

Accepted Answer

Telophase

Answer

Metaphase

Answer

Anaphase

Answer

Prophase