Question 1

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. 
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 2

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 3

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 4

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. 
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 5

How many sister chromatids are in a bivalent?

Accepted Answer

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

Question 6

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. 
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 7

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 8

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

Question 9

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

Question 10

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 11

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 12

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

Question 13

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

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

Question 15

Only meiosis could lead to the production of new

Accepted Answer

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

Question 16

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. 
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 17

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

Accepted Answer

A) True 
 B)False

Question 18

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...

Question 19

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 20

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...

Exam 9: Cell Division

Adult stem cells differ from embryonic stem cells in that

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

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.

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

How many sister chromatids are in a bivalent?

During anaphase I of meiosis,

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.

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?

Which set of symbols represents the stages of interphase?

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

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.

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

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?

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?

Only meiosis could lead to the production of new

The G₀ phase of the cell cycle is distinguished by

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

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

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

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

The Nature of Science and the Characteristics of Life

Organizing the Diversity of Life

Major Groups of Living Organisms

Chemical Building Blocks

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy and Enzymes

Photosynthesis and Cellular Respiration

Patterns of Inheritance

Chromosomes and Human Genetics

DNA

From Gene to Protein

Control of Gene Expression

DNA Technology

How Evolution Works

Evolution of Populations

Adaptation and Speciation

The Evolutionary History of Life

Maintaining the Internal Environment

Animal Nutrition and Digestion

Gas Exchange

The Circulatory System

Animal Hormones

The Nervous System

Sensing the Environment

Skeletons, Muscles, and Movement

Defenses against Disease

Reproduction and Development

Animal Behavior

Plant Structure, Nutrition, and Transport

Plant Growth and Reproduction

The Biosphere

Growth of Populations

Interactions among Organisms

Communities of Organisms

Ecosystems

Global Change

Biodiversity and People

Cancer: Cell Division Out of Control

Harnessing the Human Genome

Humans and Evolution

Smoking--Beyond Lung Cancer

Feeding a Hungry Planet

Building a Sustainable Society

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