Question 1

Which of the following best describes the primary purpose of mitosis in multicellular organisms?

Accepted Answer

To enable growth, repair, and replacement of cells

Question 2

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

Accepted Answer

Interphase

Question 3

What is the correct sequence of mitosis stages?

Accepted Answer

Prophase, Prometaphase, Metaphase, Anaphase, Telophase

Question 4

A human somatic cell contains 46 chromosomes. After mitosis and cytokinesis, how many chromosomes will each daughter cell contain?

Accepted Answer

46

Question 5

Which structure is responsible for attaching spindle fibers to chromosomes during mitosis?

Accepted Answer

Kinetochore

Question 6

During which stage of mitosis do sister chromatids separate and move toward opposite poles?

Accepted Answer

Anaphase

Question 7

If the total length of DNA in a human cell is placed end to end, approximately how long would it be?

Accepted Answer

About 2 meters

Question 8

Which of the following events occurs during prometaphase of mitosis?

Accepted Answer

Nuclear envelope breaks down and spindle fibers attach to kinetochores

Question 9

What is the role of cohesin proteins during mitosis?

Accepted Answer

They hold sister chromatids together

Question 10

Which phase of interphase is responsible for DNA replication?

Accepted Answer

S phase

Question 11

A researcher observes a cell with chromosomes lined up along the center of the cell, spindle fibers attached to kinetochores, and centrosomes at opposite poles. Which stage of mitosis is this?

Accepted Answer

Metaphase

Question 12

Which process is used by prokaryotic cells to divide and produce genetically identical daughter cells?

Accepted Answer

Binary fission

Question 13

What is the main difference between a chromosome and chromatin?

Accepted Answer

Chromatin is the uncondensed DNA-protein complex, while chromosomes are condensed structures visible during cell division

Question 14

During telophase, which of the following events occurs?

Accepted Answer

Nuclear envelope reforms and chromosomes decondense

Question 15

Which equation best represents the number of chromosomes in human gametes compared to somatic cells?

Accepted Answer

$n = 23$

Question 16

A mutation causes the enzyme separase to be nonfunctional in a cell. What is the most likely consequence during mitosis?

Accepted Answer

Sister chromatids will not separate during anaphase

Question 17

Which of the following is TRUE about stem cells in multicellular organisms?

Accepted Answer

They have the ability to differentiate into any cell type in the body

Question 18

Which of the following best explains why cell division is not a haphazard splitting of a cell?

Accepted Answer

Because each daughter cell must receive a complete and identical set of genetic information

Question 19

Which of the following events marks the beginning of cytokinesis in animal cells?

Accepted Answer

Cleavage furrow formation

Question 20

A scientist observes a cell in which the nuclear envelope is breaking down, and spindle fibers are attaching to kinetochores. Which stage is the cell in?

Accepted Answer

Prometaphase

Cell Cycle and Mitosis: Study Notes for General Biology

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