Question 1

Which of the following best describes the role of cell division in multicellular organisms?

Accepted Answer

It is responsible for growth, development, and tissue removal.

Question 2

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

Accepted Answer

S phase

Question 3

What is the correct sequence of events during mitosis?

Accepted Answer

Prophase, Metaphase, Anaphase, Telophase

Question 4

Which structure is responsible for separating sister chromatids during anaphase?

Accepted Answer

Mitotic spindle (microtubules)

Question 5

In eukaryotic cells, what is the function of the centromere during cell division?

Accepted Answer

It joins sister chromatids together.

Question 6

Which of the following statements about cytokinesis is TRUE?

Accepted Answer

It divides the cytoplasm to form two daughter cells.

Question 7

A scientist observes a cell with chromosomes lined up along the metaphase plate. Which phase of mitosis is this cell in?

Accepted Answer

Metaphase

Question 8

What is the main difference between prokaryotic and eukaryotic cell division?

Accepted Answer

Prokaryotic cells use binary fission, while eukaryotic cells use mitosis.

Question 9

If a human somatic cell contains 46 chromosomes before S phase, how many chromatids will be present after S phase?

Accepted Answer

92

Question 10

Which of the following best explains why daughter cells produced by mitosis are genetically identical to the parent cell?

Accepted Answer

Because DNA is precisely replicated and equally divided between daughter cells.

Question 11

During which stage of mitosis do the nuclear envelope reforms and chromosomes decondense?

Accepted Answer

Telophase

Question 12

Which of the following is TRUE about the genome?

Accepted Answer

It refers to all the DNA in a cell or organism.

Question 13

What is the correct formula for the number of possible chromosome combinations in gametes due to independent assortment, where $n$ is the haploid number?

Accepted Answer

$2^n$

Question 14

Which of the following best describes chromatin?

Accepted Answer

A loose complex of DNA and proteins found in the nucleus.

Question 15

A mutation occurs that prevents the formation of the mitotic spindle. What is the most likely consequence for the cell?

Accepted Answer

Sister chromatids will not separate properly.

Question 16

Which process is responsible for the division of the cytoplasm in plant cells, and what structure forms as a result?

Accepted Answer

Cytokinesis; cell plate

Question 17

If a cell fails to complete the G$_2$ phase, which of the following is most likely to occur?

Accepted Answer

The cell will not properly prepare for mitosis.

Question 18

Which of the following is a real-world example of cell division in multicellular organisms?

Accepted Answer

Healing of a skin wound through tissue regeneration.

Question 19

What is the primary function of histones in DNA packaging?

Accepted Answer

They help DNA wind into nucleosomes for efficient packaging.

Question 20

Which phase of the cell cycle is characterized by cell growth and normal metabolic functions, but not DNA replication?

Accepted Answer

G$_1$ phase

Chapter 9: The Cell Cycle – Structure, Function, and Division of Cells

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