Question 1

What are enzymes called that control the activities of other proteins by phosphorylating them?

Accepted Answer

A)  cyclins 
B)  ATPases 
C)  phosphatases 
D)  kinases 
E)  chromatin 
A)  cyclins 
B)  ATPases 
C)  phosphatases 
D)  kinases 
E)  chromatin

Question 2

The chromosomes have arrived at opposite poles during

Accepted Answer

A)  interphase. 
B)  anaphase. 
C)  prophase. 
D)  telophase. 
E)  metaphase. 
A)  interphase. 
B)  anaphase. 
C)  prophase. 
D)  telophase. 
E)  metaphase.

Question 3

In mitosis, if a parent cell has 16 chromosomes, each daughter cell will have how many chromosomes?

Accepted Answer

A)  16 
B)  8 
C)  64 
D)  32 
E)  4 
A)  16 
B)  8 
C)  64 
D)  32 
E)  4

Question 4

Eukaryotic chromosomes are made up of only DNA.

Accepted Answer

A) True 
 B)False

Question 5

Which of these statements concerning the centromere is NOT true?

Accepted Answer

A)  It is the attachment site for microtubules. 
B)  It appears to join duplicated DNAs. 
C)  It is temporary. 
D)  It anchors proteins to DNA. 
E)  Its position along the chromosome varies. 
A)  It is the attachment site for microtubules. 
B)  It appears to join duplicated DNAs. 
C)  It is temporary. 
D)  It anchors proteins to DNA. 
E)  Its position along the chromosome varies.

Question 6

Bacteria divide through a process called binary fission.

Accepted Answer

A) True 
 B)False

Question 7

Mitosis is division of the____________ , whereas cytokinesis is division of the .

Accepted Answer

A)  nucleus; chromosome 
B)  chromatid; chromosome 
C)  prokaryotic cell; eukaryotic cell 
D)  nucleus; cytoplasm 
A)  nucleus; chromosome 
B)  chromatid; chromosome 
C)  prokaryotic cell; eukaryotic cell 
D)  nucleus; cytoplasm

Question 8

The site on a chromosome where microtubules attach during cell division is the

Accepted Answer

A)  histone. 
B)  chromatid. 
C)  locus. 
D)  telomere. 
E)  centromere. 
A)  histone. 
B)  chromatid. 
C)  locus. 
D)  telomere. 
E)  centromere.

Question 9

During which phase of mitosis do sister chromatids separate from each other?

Accepted Answer

A)  Anaphase 
B)  Prophase 
C)  Metaphase 
D)  Telophase 
A)  Anaphase 
B)  Prophase 
C)  Metaphase 
D)  Telophase

Question 10

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

Accepted Answer

A)  Cytokinesis 
B)  The S phase of interphase 
C)  The G1 phase of interphase 
D)  The mitotic phase 
A)  Cytokinesis 
B)  The S phase of interphase 
C)  The G1 phase of interphase 
D)  The mitotic phase

Question 11

What is the function of centrioles?

Accepted Answer

A)  They are required for DNA replication. 
B)  They cause cytokinesis via the concentric shortening of microtubules. 
C)  They are the structure that holds the two daughter chromatids together at the centromere. 
D)  They produce microtubules for the chromosomes to migrate along as they move to opposite poles of the cell. 
A)  They are required for DNA replication. 
B)  They cause cytokinesis via the concentric shortening of microtubules. 
C)  They are the structure that holds the two daughter chromatids together at the centromere. 
D)  They produce microtubules for the chromosomes to migrate along as they move to opposite poles of the cell.

Question 12

All of the following eukaryotes can reproduce asexually EXCEPT

Accepted Answer

A)  domestic dogs. 
B)  aspen trees. 
C)  Paramecium. 
D)  Hydra. 
E)  Amoeba. 
A)  domestic dogs. 
B)  aspen trees. 
C)  Paramecium. 
D)  Hydra. 
E)  Amoeba.

Question 13

Each chromosome consists of two

Accepted Answer

A)  daughter cells. 
B)  centrofibers. 
C)  chromatids. 
D)  centrioles. 
A)  daughter cells. 
B)  centrofibers. 
C)  chromatids. 
D)  centrioles.

Question 14

Chromosomes are duplicated during what portion of the cell cycle?

Accepted Answer

A)  G2 
B)  M 
C)  S 
D)  D 
E)  G1 
A)  G2 
B)  M 
C)  S 
D)  D 
E)  G1

Question 15

In animal cells, spindle microtubules originate from structures called

Accepted Answer

A)  chromatids. 
B)  cyclins. 
C)  histones. 
D)  centrioles. 
A)  chromatids. 
B)  cyclins. 
C)  histones. 
D)  centrioles.

Question 16

For the question below, suppose that the somatic cells of humanoid X contain a total of 4 chromosomes [2N = 4] (or 2 pairs of chromosomes, [N = 2]). How many chromatids and chromosomes are present at the following stages of mitosis? Answers should be filled in for the blank spaces in the table below.

Accepted Answer

The answer of For the question below, suppose that the...

Question 17

Which of the following is correct?

Accepted Answer

A)  Interphase is characterized by little cellular activity, as the cell is resting to prepare for the next mitotic event. 
B)  The nucleolus reappears following telophase. 
C)  The chromosomes shorten and thicken during prophase. 
D)  All of the above. 
A)  Interphase is characterized by little cellular activity, as the cell is resting to prepare for the next mitotic event. 
B)  The nucleolus reappears following telophase. 
C)  The chromosomes shorten and thicken during prophase. 
D)  All of the above.

Question 18

What structure is responsible for moving the chromosomes during mitosis?

Accepted Answer

A)  spindle 
B)  nuclear membrane 
C)  nucleolus 
D)  cytoplasm 
A)  spindle 
B)  nuclear membrane 
C)  nucleolus 
D)  cytoplasm

Question 19

What would be a consequence of a mutation that disables the production of cyclin-dependent kinases (Cdks)?

Accepted Answer

A)  DNA would not contain any phosphate groups. 
B)  Telomere length would be shortened significantly. 
C)  Cell-cycle control would not be possible. 
D)  The nuclear envelope would disintegrate. 
A)  DNA would not contain any phosphate groups. 
B)  Telomere length would be shortened significantly. 
C)  Cell-cycle control would not be possible. 
D)  The nuclear envelope would disintegrate.

Question 20

During which phase of mitosis does cytokinesis occur?

Accepted Answer

A)  Anaphase 
B)  Prophase 
C)  Metaphase 
D)  Telophase 
A)  Anaphase 
B)  Prophase 
C)  Metaphase 
D)  Telophase

Exam 9: Cellular Reproduction

What are enzymes called that control the activities of other proteins by phosphorylating them?

The chromosomes have arrived at opposite poles during

In mitosis, if a parent cell has 16 chromosomes, each daughter cell will have how many chromosomes?

Eukaryotic chromosomes are made up of only DNA.

Which of these statements concerning the centromere is NOT true?

Bacteria divide through a process called binary fission.

Mitosis is division of the____________ , whereas cytokinesis is division of the .

The site on a chromosome where microtubules attach during cell division is the

During which phase of mitosis do sister chromatids separate from each other?

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

What is the function of centrioles?

All of the following eukaryotes can reproduce asexually EXCEPT

Each chromosome consists of two

Chromosomes are duplicated during what portion of the cell cycle?

In animal cells, spindle microtubules originate from structures called

Which of the following is correct?

What structure is responsible for moving the chromosomes during mitosis?

What would be a consequence of a mutation that disables the production of cyclin-dependent kinases (Cdks)?

During which phase of mitosis does cytokinesis occur?

An Introduction to Life on Earth

Atoms, Molecules, and Life

Biological Molecules

Cell Structure and Function

Cell Membrane Structure and Function

Energy Flow in the Life of a Cell

Capturing Solar Energy: Photosynthesis

Harvesting Energy: Glycolysis and Cellular Respiration

Meiosis: the Basis of Sexual Reproduction

Patterns of Inheritance

DNA: The Molecule of Heredity

Gene Expression and Regulation

Biotechnology

Principles of Evolution

How Populations Evolve

The Origin of Species

The History of Life

Systematics: Seeking Order Amid Diversity

The Diversity of Prokaryotes and Viruses

The Diversity of Protists

The Diversity of Plants

The Diversity of Fungi

Animal Diversity I: Invertebrates

Animal Diversity Ii: Vertebrates

Animal Behavior

Population Growth and Regulation

Community Interactions

Energy Flow and Nutrient Cycling in Ecosystems

Earths Diverse Ecosystems

Conserving Earths Biodiversity

Homeostasis and the Organization of the Animal Body

Circulation

Respiration

Nutrition and Digestion

The Urinary System

Defenses Against Disease

Chemical Control of the Animal Body: the Endocrine System

The Nervous System

The Senses

Action and Support: the Muscles and Skeleton

Animal Reproduction

Animal Development

Plant Anatomy and Nutrient Transport

Plant Reproduction and Development

Plant Responses to the Environment

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