Question 1

The orderly distribution of genetic information occurs in prokaryotic cells by a process known as _______.

Accepted Answer

The answer of The orderly distribution of genetic information occurs...

Question 2

Meiosis can occur

Accepted Answer

A)  in all sexually reproducing organisms. 
B)  only when an organism is diploid. 
C)  only in multicellular organisms. 
D)  only in haploid organisms. 
E)  only in single-celled organisms. 
A)  in all sexually reproducing organisms. 
B)  only when an organism is diploid. 
C)  only in multicellular organisms. 
D)  only in haploid organisms. 
E)  only in single-celled organisms.

Question 3

During the bacterial cell division, the single cells is separated into two cells by

Accepted Answer

A)  centrosomes. 
B)  spindle fibers. 
C)  nucleosomes. 
D)  pinching of the plasma membrane. 
E)  aneuploidy. 
A)  centrosomes. 
B)  spindle fibers. 
C)  nucleosomes. 
D)  pinching of the plasma membrane. 
E)  aneuploidy.

Question 4

A haploid cell is a cell

Accepted Answer

A)  in which the genes are arranged haphazardly. 
B)  containing only one copy of each chromosome. 
C)  that has resulted from the process of mitosis. 
D)  with twice the number of chromosomes of a diploid cell. 
E)  None of the above 
A)  in which the genes are arranged haphazardly. 
B)  containing only one copy of each chromosome. 
C)  that has resulted from the process of mitosis. 
D)  with twice the number of chromosomes of a diploid cell. 
E)  None of the above

Question 5

In contrast to mitosis, in meiosis

Accepted Answer

A)  genetically identical daughter cells are produced. 
B)  pairing of homologous chromosomes occurs. 
C)  crossing over can take place. 
D)  there is no cytokinesis. 
E)  Both b and c 
A)  genetically identical daughter cells are produced. 
B)  pairing of homologous chromosomes occurs. 
C)  crossing over can take place. 
D)  there is no cytokinesis. 
E)  Both b and c

Question 6

Which of the following statements about DNA replication and cytokinesis in Escherichia coli is true?

Accepted Answer

A)  DNA replication occurs in the nucleus. 
B)  Cytokinesis is facilitated by microfilaments of actin and myosin. 
C)  DNA replication occurs during the S phase of the cell cycle. 
D)  Cell reproduction is initiated by reproductive signals, which result in DNA replication, DNA segregation, and cytokinesis. 
E)  The E. coli chromosome is linear. 
A)  DNA replication occurs in the nucleus. 
B)  Cytokinesis is facilitated by microfilaments of actin and myosin. 
C)  DNA replication occurs during the S phase of the cell cycle. 
D)  Cell reproduction is initiated by reproductive signals, which result in DNA replication, DNA segregation, and cytokinesis. 
E)  The E. coli chromosome is linear.

Question 7

Human males have _______ sex chromosomes.

Accepted Answer

A)  XX 
B)  XY 
C)  XO 
D)  three types of 
E)  23 
A)  XX 
B)  XY 
C)  XO 
D)  three types of 
E)  23

Question 8

Which of the following statements about mitosis is true?

Accepted Answer

A)  The chromosome number in the resulting cells is halved. 
B)  DNA replication is completed in prophase. 
C)  Crossing over occurs during prophase. 
D)  Two genetically identical daughter cells are formed. 
E)  It consists of two nuclear divisions. 
A)  The chromosome number in the resulting cells is halved. 
B)  DNA replication is completed in prophase. 
C)  Crossing over occurs during prophase. 
D)  Two genetically identical daughter cells are formed. 
E)  It consists of two nuclear divisions.

Question 9

One difference between mitosis and meiosis I is that

Accepted Answer

A)  homologous chromosome pairs synapse during mitosis. 
B)  chromosomes do not replicate in the interphase preceding meiosis. 
C)  homologous chromosome pairs synapse during meiosis but not during mitosis. 
D)  spindles composed of microtubules are not required during meiosis. 
E)  sister chromatids separate during meiosis but not during mitosis. 
A)  homologous chromosome pairs synapse during mitosis. 
B)  chromosomes do not replicate in the interphase preceding meiosis. 
C)  homologous chromosome pairs synapse during meiosis but not during mitosis. 
D)  spindles composed of microtubules are not required during meiosis. 
E)  sister chromatids separate during meiosis but not during mitosis.

Question 10

Which of the following phases of the cell cycle is not part of interphase?

Accepted Answer

A)  M 
B)  S 
C)  G1 
D)  G2 
E)  G0 
A)  M 
B)  S 
C)  G1 
D)  G2 
E)  G0

Question 11

Which of the following statements about asexual reproduction is true?

Accepted Answer

A)  In asexual reproduction, progeny are haploid. 
B)  It requires meiosis. 
C)  In asexual reproduction, there is genetic variation among the offspring. 
D)  In asexual reproduction, two gametes fuse to produce a zygote. 
E)  It produces offspring that are genetically identical to the parent. 
A)  In asexual reproduction, progeny are haploid. 
B)  It requires meiosis. 
C)  In asexual reproduction, there is genetic variation among the offspring. 
D)  In asexual reproduction, two gametes fuse to produce a zygote. 
E)  It produces offspring that are genetically identical to the parent.

Question 12

The mitotic spindle is composed of

Accepted Answer

A)  chromosomes. 
B)  chromatids. 
C)  microtubules. 
D)  chromatin. 
E)  centrosomes. 
A)  chromosomes. 
B)  chromatids. 
C)  microtubules. 
D)  chromatin. 
E)  centrosomes.

Question 13

A cell with three homologous sets of chromosomes is called a(n) _______ cell.

Accepted Answer

The answer of A cell with three homologous sets of...

Question 14

The initiation of the S phase and the M phase of the cell cycle depends on a pair of molecules called _______ and _______.

Accepted Answer

A)  actin; myosin 
B)  Cdk's; cyclin 
C)  ligand; receptor 
D)  MSH; MSH-receptor 
E)  ATP; ATPase 
A)  actin; myosin 
B)  Cdk's; cyclin 
C)  ligand; receptor 
D)  MSH; MSH-receptor 
E)  ATP; ATPase

Question 15

The molecules that make up a chromosome are _______ and _______.

Accepted Answer

A)  DNA; RNA 
B)  DNA; proteins 
C)  proteins; lipids 
D)  nucleotides; nucleosides 
E)  proteins; phospholipids 
A)  DNA; RNA 
B)  DNA; proteins 
C)  proteins; lipids 
D)  nucleotides; nucleosides 
E)  proteins; phospholipids

Question 16

Which statement about the cell cycle is not true?

Accepted Answer

A)  It consists of interphase, mitosis, and cytokinesis. 
B)  The cell's DNA replicates during G1. 
C)  A cell can remain in G1 for weeks or much longer. 
D)  DNA is not replicated during G2. 
E)  Cells enter the cell cycle as a result of internal or external signals. 
A)  It consists of interphase, mitosis, and cytokinesis. 
B)  The cell's DNA replicates during G1. 
C)  A cell can remain in G1 for weeks or much longer. 
D)  DNA is not replicated during G2. 
E)  Cells enter the cell cycle as a result of internal or external signals.

Question 17

In a metaphase chromosome, DNA is combined with _______, called _______, to form structures known as _______.

Accepted Answer

A)  proteins; nucleoproteins; centrosomes 
B)  nucleic acids; nucleosomes; histones 
C)  proteins; histones; nucleosomes 
D)  small molecules; histones; nucleosomes 
E)  proteins; nucleosomes; histones 
A)  proteins; nucleoproteins; centrosomes 
B)  nucleic acids; nucleosomes; histones 
C)  proteins; histones; nucleosomes 
D)  small molecules; histones; nucleosomes 
E)  proteins; nucleosomes; histones

Question 18

The process that ensures that genetic information is passed on to a cell's daughter cells is _______.

Accepted Answer

The answer of The process that ensures that genetic information...

Question 19

Programmed cell death (apoptosis)

Accepted Answer

A)  occurs in cells that have been deprived of essential nutrients. 
B)  occurs only in cells that have damaged DNA. 
C)  is a natural process during development. 
D)  is signaled by the initiation of mitosis. 
E)  is well controlled in cancer cells. 
A)  occurs in cells that have been deprived of essential nutrients. 
B)  occurs only in cells that have damaged DNA. 
C)  is a natural process during development. 
D)  is signaled by the initiation of mitosis. 
E)  is well controlled in cancer cells.

Question 20

Nondisjunction causes the production of _______ cells.

Accepted Answer

The answer of Nondisjunction causes the production of _______ cells....

Exam 11: The Cell Cycle and Cell Division

The orderly distribution of genetic information occurs in prokaryotic cells by a process known as _______.

Meiosis can occur

During the bacterial cell division, the single cells is separated into two cells by

A haploid cell is a cell

In contrast to mitosis, in meiosis

Which of the following statements about DNA replication and cytokinesis in Escherichia coli is true?

Human males have _______ sex chromosomes.

Which of the following statements about mitosis is true?

One difference between mitosis and meiosis I is that

Which of the following phases of the cell cycle is not part of interphase?

Which of the following statements about asexual reproduction is true?

The mitotic spindle is composed of

A cell with three homologous sets of chromosomes is called a(n) _______ cell.

The initiation of the S phase and the M phase of the cell cycle depends on a pair of molecules called _______ and _______.

The molecules that make up a chromosome are _______ and _______.

Which statement about the cell cycle is not true?

In a metaphase chromosome, DNA is combined with _______, called _______, to form structures known as _______.

The process that ensures that genetic information is passed on to a cell's daughter cells is _______.

Programmed cell death (apoptosis)

Nondisjunction causes the production of _______ cells.

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

Filters

The initiation of the S phase and the M phase of the cell cycle depends on a pair of molecules called _ and _.

The molecules that make up a chromosome are _ and _.

In a metaphase chromosome, DNA is combined with ___, called _, to form structures known as _____.