Question 1

The most critical stage of interphase for a cell that needs to undergo cell division is ________ phase. If the cell does not complete this phase, it cannot undergo DNA segregation.

Accepted Answer

The answer of The most critical stage of interphase for...

Question 2

During meiosis I, the microtubules from only one spindle pole attach to only one member of a bivalent.

Accepted Answer

A) True 
 B)False

Question 3

If a plant has a karyotype of 18 chromosomes, how many chromosomes would be present in each of its gametes?

Accepted Answer

A)   36
B)   18
C)   9
D)   6

Question 4

Huge amounts of DNA (6 feet in humans) can fit into the nucleus of a single cell because the DNA is wrapped around ________ to form a "beaded necklace" know as chromatin.

Accepted Answer

The answer of Huge amounts of DNA (6 feet in...

Question 5

During anaphase I of meiosis,

Accepted Answer

A)   sister chromatids are pulled apart toward opposite poles.
B)   each member of a bivalent moves toward a different pole.
C)   all bivalents are pulled to the same pole.
D)   paired homologues become attached to each other by microtubules.

Question 6

At the end of telophase the cell is ready for physical division into two cells, a process called ___________.

Accepted Answer

The answer of At the end of telophase the cell...

Question 7

Only meiosis could lead to the production of new

Accepted Answer

A)   skin cells.
B)   brain cells.
C)   sperm cells.
D)   liver cells.

Question 8

How many sister chromatids are in a bivalent?

Accepted Answer

A)   2
B)   4
C)   8
D)   16

Question 9

A somatic cell contains 16 chromosomes. The diploid number of this cell is _________ [2n = ?].

Accepted Answer

The answer of A somatic cell contains 16 chromosomes. The...

Question 10

During mitosis, the number and shape of an organism's chromosomes become obvious. This set of identifiable chromosomes can be arranged into a diagram, or _______, of that organism.

Accepted Answer

The answer of During mitosis, the number and shape of...

Question 11

As the _____________ separate during prophase, they determine opposite ends, or spindle poles, of a cell that is beginning mitosis.

Accepted Answer

The answer of As the _____________ separate during prophase, they...

Question 12

Which set of symbols represents the stages of interphase?

Accepted Answer

A)   G₀, G₁, and G₂
B)   S₁, S2, and G₀
C)   S, G₀, and G₁
D)   S, G₁, and G₂

Question 13

The G₀ phase of the cell cycle is distinguished by

Accepted Answer

A)   an active preparation for DNA synthesis.
B)   a doubling of chromosomes.
C)   an absence of preparation for DNA synthesis.
D)   the appearance of a metaphase plate.

Question 14

When examining the rapidly dividing cells of the onion root tip, you see a cell whose chromosomes are visible and are arranged in approximately the same size and shape as the nucleus. What stage of mitosis is this cell in?

Accepted Answer

A)   metaphase
B)   prophase
C)   anaphase
D)   telophase

Question 15

If the skin cell of an organism has 24 chromosomes, its gametes must also have 24 chromosomes.

Accepted Answer

A) True 
 B)False

Question 16

Adult stem cells differ from embryonic stem cells in that

Accepted Answer

A)   embryonic stem cells are found throughout the body of the fetus, but adult stems cells are found only in adults.
B)   adult stem cells are easier to obtain than embryonic stem cells.
C)   adult stem cells can differentiate into fewer types of cells than embryonic stem cells.
D)   embryonic stem cells do not require differentiation signals like adult stem cells do.

Question 17

The parent cell shown below left undergoes meiosis. In the box, lettered A through C, are three different gametes. 
Which of these gametes could have come from this parent cell?

Accepted Answer

A)   Gamete A
B)   Gamete B
C)   Gamete C
D)   All of these gametes could have come from this parent cell.

Question 18

Why must DNA be packed into chromosomes before mitosis or meiosis can occur?

Accepted Answer

A)   In their unpacked state, the strands of DNA would be difficult to pull apart during cell division.
B)   The zygote would be unable to live if the DNA were not packed into chromosomes.
C)   We would be unable to see the karyotype if the DNA were not packed into chromosomes.
D)   Some of the genes would escape during cell division if they were not packed tightly into chromosomes.

Question 19

The cell depicted below has a diploid number of 4 (2n = 4) . 
Assuming cell division started with a diploid cell, in what stage of what type of cell division is the cell?

Accepted Answer

A)   anaphase of mitosis
B)   anaphase I of meiosis
C)   anaphase II of meiosis
D)   Both A and C are possible.

Question 20

The goal of __________ is to increase genetic diversity by creating a new diploid individual from haploid cells.

Accepted Answer

The answer of The goal of __________ is to increase...

Exam 9: Cell Division

A somatic cell contains 16 chromosomes. The diploid number of this cell is _________ [2n = ?].

Correct AnswerverifiedShow Answer

During mitosis, the number and shape of an organism's chromosomes become obvious. This set of identifiable chromosomes can be arranged into a diagram, or _______, of that organism.

Correct AnswerverifiedShow Answer

If the skin cell of an organism has 24 chromosomes, its gametes must also have 24 chromosomes.

Correct AnswerverifiedShow Answer

The goal of __________ is to increase genetic diversity by creating a new diploid individual from haploid cells.

Correct AnswerverifiedShow Answer

Huge amounts of DNA (6 feet in humans) can fit into the nucleus of a single cell because the DNA is wrapped around ________ to form a "beaded necklace" know as chromatin.

Correct AnswerverifiedShow Answer

If a plant has a karyotype of 18 chromosomes, how many chromosomes would be present in each of its gametes?

Correct AnswerverifiedShow Answer

As the _____________ separate during prophase, they determine opposite ends, or spindle poles, of a cell that is beginning mitosis.

Correct AnswerverifiedShow Answer

Only meiosis could lead to the production of new

Correct AnswerverifiedShow Answer

The parent cell shown below left undergoes meiosis. In the box, lettered A through C, are three different gametes. Which of these gametes could have come from this parent cell?

Correct AnswerverifiedShow Answer

During meiosis I, the microtubules from only one spindle pole attach to only one member of a bivalent.

Correct AnswerverifiedShow Answer

When examining the rapidly dividing cells of the onion root tip, you see a cell whose chromosomes are visible and are arranged in approximately the same size and shape as the nucleus. What stage of mitosis is this cell in?

Correct AnswerverifiedShow Answer

Which set of symbols represents the stages of interphase?

Correct AnswerverifiedShow Answer

At the end of telophase the cell is ready for physical division into two cells, a process called ___________.

Correct AnswerverifiedShow Answer

Adult stem cells differ from embryonic stem cells in that

Correct AnswerverifiedShow Answer

The most critical stage of interphase for a cell that needs to undergo cell division is ________ phase. If the cell does not complete this phase, it cannot undergo DNA segregation.

Correct AnswerverifiedShow Answer

Why must DNA be packed into chromosomes before mitosis or meiosis can occur?

Correct AnswerverifiedShow Answer

How many sister chromatids are in a bivalent?

Correct AnswerverifiedShow Answer

The cell depicted below has a diploid number of 4 (2n = 4) . Assuming cell division started with a diploid cell, in what stage of what type of cell division is the cell?

Correct AnswerverifiedShow Answer

The G₀ phase of the cell cycle is distinguished by

Correct AnswerverifiedShow Answer

During anaphase I of meiosis,

Correct AnswerverifiedShow Answer

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