Question 1

How do daughter cells at the end of mitosis and cytokinesis compare with the parent cell before DNA replication occurs?

Accepted Answer

A) The daughter cells may have the same number of chromosomes but double the amount of DNA. 
B) The daughter cells have the same number of chromosomes and the same amount of DNA. 
C) The daughter cells have half the number of chromosomes and half the amount of DNA. 
D) The daughter cells have half the amount of cytoplasm and half the number of chromosomes. 
A) The daughter cells may have the same number of chromosomes but double the amount of DNA. 
B) The daughter cells have the same number of chromosomes and the same amount of DNA. 
C) The daughter cells have half the number of chromosomes and half the amount of DNA. 
D) The daughter cells have half the amount of cytoplasm and half the number of chromosomes.

Question 2

What is the initial step in DNA replication?

Accepted Answer

A) breakdown of the nuclear envelope 
B) formation of the mitotic spindle 
C) formation of the cleavage furrow 
D) unwinding of the DNA double helix 
A) breakdown of the nuclear envelope 
B) formation of the mitotic spindle 
C) formation of the cleavage furrow 
D) unwinding of the DNA double helix

Question 3

Which molecule is made in the nucleus but exits to function in the cytoplasm?

Accepted Answer

A) chromosome 
B) protein 
C) mRNA 
D) gene 
A) chromosome 
B) protein 
C) mRNA 
D) gene

Question 4

Which cell cycle stage is not part of interphase?

Accepted Answer

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

Question 5

The information used to make proteins is encoded by the:

Accepted Answer

A) number of different chromosomes. 
B) repeating sugar and phosphate molecules in DNA. 
C) 20 different amino acids of proteins. 
D) four bases A, T, G, or C. 
A) number of different chromosomes. 
B) repeating sugar and phosphate molecules in DNA. 
C) 20 different amino acids of proteins. 
D) four bases A, T, G, or C.

Question 6

Each phase of the cell cycle takes a different amount of time for a cell to complete.The longer the length of the phase,the more likely you will find a cell in that phase.You are looking at some animal cells under the microscope,and you see cells at different phases of the cell cycle.You count how many are in each phase and find out that 90 percent are in interphase,6 percent are in prophase,1.5 percent are in metaphase,0.5 percent are in anaphase,and 2 percent are in telophase.If the length of the cell cycle is 24 hours,how long does it take for the cells to go through each of these phases of the cell cycle?

Accepted Answer

If 90 percent of the cells are in interp

Question 7

A cell plate is forming across the middle of a cell and new nuclei are forming at the poles.What kind of cell is this?

Accepted Answer

A) an animal cell going through cytokinesis 
B) an animal cell during telophase 
C) a bacterial cell 
D) a plant cell during metaphase 
E) a plant cell going through cytokinesis 
A) an animal cell going through cytokinesis 
B) an animal cell during telophase 
C) a bacterial cell 
D) a plant cell during metaphase 
E) a plant cell going through cytokinesis

Question 8

What would be the result of an error in anaphase that failed to separate a pair of sister chromatids?

Accepted Answer

A) The nuclear envelope would not be able to break down. 
B) One cell would have an extra gene, and one cell would be missing one gene. 
C) One cell would have an extra chromosome, and one cell would lack a chromosome. 
D) Cytokinesis would not be able to take place, and the cells would not divide. 
A) The nuclear envelope would not be able to break down. 
B) One cell would have an extra gene, and one cell would be missing one gene. 
C) One cell would have an extra chromosome, and one cell would lack a chromosome. 
D) Cytokinesis would not be able to take place, and the cells would not divide.

Question 9

In cell division,the separation of duplicated chromosomes is ________.

Accepted Answer

The answer of In cell division,the separation of duplicated chromosomes...

Question 10

During metaphase,chromosomes that are attached to microtubules are observed to undergo a "back-and-forth" movement.What is happening during this movement?

Accepted Answer

A) The chromosomes are being replicated. 
B) The centrosome is being replicated. 
C) The chromosomes are being aligned at the equator of the cell. 
D) The chromosomes are breaking up the nuclear membrane. 
A) The chromosomes are being replicated. 
B) The centrosome is being replicated. 
C) The chromosomes are being aligned at the equator of the cell. 
D) The chromosomes are breaking up the nuclear membrane.

Question 11

In cell division,the separation of the cell's cytoplasm to produce two daughter cells is ________.

Accepted Answer

The answer of In cell division,the separation of the cell's...

Question 12

Which statement is true of mitosis and cytokinesis in normal tissues?

Accepted Answer

A) Cytokinesis partially overlaps with mitosis. 
B) Cytokinesis occurs simultaneously with mitosis. 
C) Mitosis precedes cytokinesis. 
D) Cytokinesis precedes mitosis. 
A) Cytokinesis partially overlaps with mitosis. 
B) Cytokinesis occurs simultaneously with mitosis. 
C) Mitosis precedes cytokinesis. 
D) Cytokinesis precedes mitosis.

Question 13

What event typically begins in anaphase and is completed soon after the end of telophase?

Accepted Answer

A) interphase 
B) alignment of chromosomes at the cell equator 
C) packing of DNA into well-defined chromosomes 
D) cytokinesis 
A) interphase 
B) alignment of chromosomes at the cell equator 
C) packing of DNA into well-defined chromosomes 
D) cytokinesis

Question 14

The human genome is estimated to include 20,000 to 25,000 genes.

Accepted Answer

A) True 
 B)False

Question 15

The order of bases in a gene is copied to make a/an:

Accepted Answer

A) amino acid. 
B) gene. 
C) mRNA. 
D) ribosome. 
A) amino acid. 
B) gene. 
C) mRNA. 
D) ribosome.

Question 16

The number of genes in the human genome is estimated to be:

Accepted Answer

A) 20,000 to 25,000. 
B) 3 billion. 
C) 3 to 6 million. 
D) 1 million. 
A) 20,000 to 25,000. 
B) 3 billion. 
C) 3 to 6 million. 
D) 1 million.

Question 17

During DNA replication,what acts as the template for synthesis of a new strand of DNA?

Accepted Answer

A) a single strand of DNA 
B) a ribosome 
C) a single strand of mRNA 
D) a single strand of rRNA 
A) a single strand of DNA 
B) a ribosome 
C) a single strand of mRNA 
D) a single strand of rRNA

Exam 9: The Links in Lifes Chain: Genetics and Cell Division

How do daughter cells at the end of mitosis and cytokinesis compare with the parent cell before DNA replication occurs?

What is the initial step in DNA replication?

Which molecule is made in the nucleus but exits to function in the cytoplasm?

Which cell cycle stage is not part of interphase?

The information used to make proteins is encoded by the:

A cell plate is forming across the middle of a cell and new nuclei are forming at the poles.What kind of cell is this?

What would be the result of an error in anaphase that failed to separate a pair of sister chromatids?

In cell division,the separation of duplicated chromosomes is ________.

During metaphase,chromosomes that are attached to microtubules are observed to undergo a "back-and-forth" movement.What is happening during this movement?

In cell division,the separation of the cell's cytoplasm to produce two daughter cells is ________.

Which statement is true of mitosis and cytokinesis in normal tissues?

What event typically begins in anaphase and is completed soon after the end of telophase?

The human genome is estimated to include 20,000 to 25,000 genes.

The order of bases in a gene is copied to make a/an:

The number of genes in the human genome is estimated to be:

During DNA replication,what acts as the template for synthesis of a new strand of DNA?

Science As a Way of Learning: a Guide to the Natural World

Fundamental Building Blocks: Chemistry, water, and Ph

Lifes Components: Biological Molecules

Lifes Home: the Cell

Lifes Border: the Plasma Membrane

Lifes Mainspring: an Introduction to Energy

Vital Harvest: Deriving Energy From Food

The Green Worlds Gift: Photosynthesis

Preparing for Sexual Reproduction: Meiosis

The First Geneticist: Mendel and His Discoveries

Units of Heredity: Chromosomes and Inheritance

Passing on Lifes Information: Dna Structure and Replication

How Proteins Are Made: Genetic Transcription, translation, and Regulation

The Future Isnt What It Used to Be: Biotechnology

An Introduction to Evolution: Charles Darwin, evolutionary Thought, and the Evidence for Evolution

The Means of Evolution: Microevolution

The Outcomes of Evolution: Macroevolution

A Slow Unfolding: the History of Life on Earth

Arriving Late,traveling Far: the Evolution of Human Beings

Viruses,bacteria,archaea,and Protists: the Diversity of Life 1

Fungi: the Diversity of Life 2

Animals: the Diversity of Life 3

Plants: the Diversity of Life 4

The Angiosperms: Form and Function in Flowering Plants

Body Support and Movement: the Integumentary, skeletal, and Muscular Systems

Communication and Control 1: the Nervous System

Communication and Control 2: the Endocrine System

Defending the Body: the Immune System

Transport and Exchange 1: Blood and Breath

Transport and Exchange 2: Digestion, nutrition, and Elimination

An Amazingly Detailed Script: Animal Development

How the Baby Came to Be: Human Reproduction

An Interactive Living World 1: Populations in Ecology

An Interactive Living World 2: Communities in Ecology

An Interactive Living World 3: Ecosystems and Biomes

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