Question 1

A liver cell from a human male has:

Accepted Answer

A)  22 pairs of autosomes, an X chromosome, and a Y chromosome. 
B)  22 pairs of autosomes and two X chromosomes. 
C)  46 pairs of autosomes, an X chromosome, and a Y chromosome. 
D)  23 pairs of autosomes and two X chromosomes. 
A)  22 pairs of autosomes, an X chromosome, and a Y chromosome. 
B)  22 pairs of autosomes and two X chromosomes. 
C)  46 pairs of autosomes, an X chromosome, and a Y chromosome. 
D)  23 pairs of autosomes and two X chromosomes. A

Question 2

Match the following.
A) metaphase
B) telophase
C) prophase
D) cytokinesis
E) anaphase
-Microtubules shorten and the genetic material divides

Accepted Answer

E

Question 3

Why is prokaryotic cell division fundamentally different from eukaryotic cell division?

Accepted Answer

A)  Prokaryotic cells divide for several months and then live for decades without dividing. 
B)  Prokaryotic cells do not have a plasma membrane. 
C)  Prokaryotes have many more chromosomes to divide. 
D)  Prokaryotic cells have a single chromosome and no nuclear membrane. 
A)  Prokaryotic cells divide for several months and then live for decades without dividing. 
B)  Prokaryotic cells do not have a plasma membrane. 
C)  Prokaryotes have many more chromosomes to divide. 
D)  Prokaryotic cells have a single chromosome and no nuclear membrane. D

Question 4

What is a function of cell division?

Accepted Answer

A)  to turn skin cells into hair cells 
B)  to keep cell size small as multicellular organisms grow 
C)  to allow cell size to increase to its maximum 
D)  to allow mature leaves to increase in size 
A)  to turn skin cells into hair cells 
B)  to keep cell size small as multicellular organisms grow 
C)  to allow cell size to increase to its maximum 
D)  to allow mature leaves to increase in size

Question 5

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

Question 6

If a cell contains 20 chromosomes, how many chromatids will be present during prophase?

Accepted Answer

A)  30 
B)  20 
C)  5 
D)  40 
A)  30 
B)  20 
C)  5 
D)  40

Question 7

Sister chromatids are separating from each other during:

Accepted Answer

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

Question 8

Choose the statement that is correct about the frequency of mitosis.

Accepted Answer

A)  All cells divide throughout the existence of a multicellular eukaryote. 
B)  Some cells, such as leaf cells, cease to divide after mature size is reached. 
C)  Bone marrow cells are an example of cells that cease to divide after maturity. 
D)  Brain cells are easy to replace because they divide frequently after maturity. 
A)  All cells divide throughout the existence of a multicellular eukaryote. 
B)  Some cells, such as leaf cells, cease to divide after mature size is reached. 
C)  Bone marrow cells are an example of cells that cease to divide after maturity. 
D)  Brain cells are easy to replace because they divide frequently after maturity.

Question 9

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 10

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 11

During S phase, chromosomes are converted to what form?

Accepted Answer

A)  karyotypes 
B)  sister chromatids 
C)  chromatin 
D)  centrosomes 
A)  karyotypes 
B)  sister chromatids 
C)  chromatin 
D)  centrosomes

Question 12

Which of the following organisms would reproduce by binary fission?

Accepted Answer

A)  plants 
B)  animals 
C)  fungi 
D)  bacteria 
A)  plants 
B)  animals 
C)  fungi 
D)  bacteria

Question 13

Chromosomes uncoil and new nuclei form during:

Accepted Answer

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

Question 14

Which statement about binary fission is true?

Accepted Answer

A)  It occurs during S phase of the cell cycle. 
B)  It is the cell division process of both prokaryotic and eukaryotic cells. 
C)  It is the cell division process of prokaryotic cells. 
D)  It is part of interphase. 
A)  It occurs during S phase of the cell cycle. 
B)  It is the cell division process of both prokaryotic and eukaryotic cells. 
C)  It is the cell division process of prokaryotic cells. 
D)  It is part of interphase.

Question 15

Which of the following structures is involved in forming a cleavage furrow?

Accepted Answer

A)  sister chromatids 
B)  mitotic spindle 
C)  metaphase plate 
D)  contractile ring 
A)  sister chromatids 
B)  mitotic spindle 
C)  metaphase plate 
D)  contractile ring

Question 16

Microtubule-organizing centers will begin to migrate toward the cell poles during:

Accepted Answer

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

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

The complete collection of an organism's genetic information constitutes:

Accepted Answer

A)  a chromosome. 
B)  proteins. 
C)  a gene. 
D)  a genome. 
A)  a chromosome. 
B)  proteins. 
C)  a gene. 
D)  a genome.

Question 19

The replication of a DNA molecule results in:

Accepted Answer

A)  two DNA molecules, each with one old and one new strand. 
B)  two DNA molecules, one being made of the old strands and one being made of two new strands. 
C)  two DNA molecules, both of which are made of completely new strands. 
D)  four unwound DNA strands. 
A)  two DNA molecules, each with one old and one new strand. 
B)  two DNA molecules, one being made of the old strands and one being made of two new strands. 
C)  two DNA molecules, both of which are made of completely new strands. 
D)  four unwound DNA strands.

Question 20

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

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

A liver cell from a human male has:

Match the following. A) metaphase B) telophase C) prophase D) cytokinesis E) anaphase -Microtubules shorten and the genetic material divides

Why is prokaryotic cell division fundamentally different from eukaryotic cell division?

What is a function of cell division?

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

If a cell contains 20 chromosomes, how many chromatids will be present during prophase?

Sister chromatids are separating from each other during:

Choose the statement that is correct about the frequency of mitosis.

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

The information used to make proteins is encoded by the:

During S phase, chromosomes are converted to what form?

Which of the following organisms would reproduce by binary fission?

Chromosomes uncoil and new nuclei form during:

Which statement about binary fission is true?

Which of the following structures is involved in forming a cleavage furrow?

Microtubule-organizing centers will begin to migrate toward the cell poles during:

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

The complete collection of an organism's genetic information constitutes:

The replication of a DNA molecule results in:

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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