Question 1

During prophase I of meiosis, homologous chromosomes lie side by side. This phenomenon is known as

Accepted Answer

A)  chromatid pairing. 
B)  DNA replication. 
C)  tetrad formation. 
D)  paternal pairing. 
E)  parental pairing. 
A)  chromatid pairing. 
B)  DNA replication. 
C)  tetrad formation. 
D)  paternal pairing. 
E)  parental pairing.

Question 2

Briefly explain the difference between meiosis I and mitosis. Also, explain the reasons for these differences.

Accepted Answer

In meiosis I, the homologous chromosomes

Question 3

Match between columns
                        Premises: Sister chromatids separate at their centromeres.

Accepted Answer

The Answer of Prometaphase and Prophase and Telophase and Anaphase is...

Question 4

In unwound chromatin, nucleosomes are organized into large coiled loops held together by

Accepted Answer

A)  histones. 
B)  centromeres. 
C)  kinetochore proteins. 
D)  scaffolding proteins. 
E)  condensins. 
A)  histones. 
B)  centromeres. 
C)  kinetochore proteins. 
D)  scaffolding proteins. 
E)  condensins.

Question 5

A pair of centrioles is found at the center of the microtubule-organizing center in plant cells.

Accepted Answer

A) True 
 B)False

Question 6

Gametophyte plants produce gametes using

Accepted Answer

A)  mitosis. 
B)  meiosis. 
C)  fertilization. 
D)  polyploidy. 
E)  sporogenesis. 
A)  mitosis. 
B)  meiosis. 
C)  fertilization. 
D)  polyploidy. 
E)  sporogenesis.

Question 7

A cell is dividing by binary fission. What can you conclude?

Accepted Answer

A)  Mitosis has taken place without cytokinesis. 
B)  Homologous chromosomes have already paired. 
C)  The cyclin-Cdk complex is no longer phosphorylating enzymes. 
D)  The cell is undergoing uncontrolled cell division. 
E)  The cell is prokaryotic. 
A)  Mitosis has taken place without cytokinesis. 
B)  Homologous chromosomes have already paired. 
C)  The cyclin-Cdk complex is no longer phosphorylating enzymes. 
D)  The cell is undergoing uncontrolled cell division. 
E)  The cell is prokaryotic.

Question 8

To control the cell cycle,

Accepted Answer

A)  the activity of Cdks stays the same throughout the cell cycle. 
B)  cyclins fluctuate during the cell cycle. 
C)  Cdks are active only when they are released from cyclins. 
D)  the anaphase-promoting complex stimulates DNA replication. 
E)  M-Cdk inhibits mitosis. 
A)  the activity of Cdks stays the same throughout the cell cycle. 
B)  cyclins fluctuate during the cell cycle. 
C)  Cdks are active only when they are released from cyclins. 
D)  the anaphase-promoting complex stimulates DNA replication. 
E)  M-Cdk inhibits mitosis.

Question 9

The function of nucleosomes is to

Accepted Answer

A)  prevent DNA strands from tangling. 
B)  help DNA replicate. 
C)  make RNA synthesis possible. 
D)  prevent RNA from tangling with DNA during transcription. 
E)  prevent histones from tangling. 
A)  prevent DNA strands from tangling. 
B)  help DNA replicate. 
C)  make RNA synthesis possible. 
D)  prevent RNA from tangling with DNA during transcription. 
E)  prevent histones from tangling.

Question 10

Figure 10-2 ​
 
​
The process occurring at arrow 3 in the accompanying figure is

Accepted Answer

A)  fertilization. 
B)  G1. 
C)  meiosis. 
D)  mitosis. 
E)  fusion. 
A)  fertilization. 
B)  G1. 
C)  meiosis. 
D)  mitosis. 
E)  fusion.

Question 11

Match between columns
                        Premises: Nuclear envelope fragments.

Accepted Answer

The Answer of Telophase and Metaphase and Anaphase and Prophase is...

Question 12

Chromosomes are duplicated during the ____ of the cell cycle.

Accepted Answer

A)  G1 phase 
B)  G2 phase 
C)  S phase 
D)  metaphase 
E)  prophase 
A)  G1 phase 
B)  G2 phase 
C)  S phase 
D)  metaphase 
E)  prophase

Question 13

Match between columns
                        Premises: Spindle microtubules attach to kinetochores.

Accepted Answer

The Answer of Anaphase and Prometaphase and Telophase and Prophase is...

Question 14

Match between columns
                        Premises: Cytokinesis generally begins.

Accepted Answer

The Answer of Metaphase and Prometaphase and Prophase and Telophase is...

Question 15

An animal with a diploid number of 36 chromosomes will have ____ chromosomes in its gametes and ____ chromosomes in its somatic cells.

Accepted Answer

A)  18; 18 
B)  18; 36 
C)  36; 18 
D)  36; 36 
E)  36; 72 
A)  18; 18 
B)  18; 36 
C)  36; 18 
D)  36; 36 
E)  36; 72

Question 16

Homologous chromosomes can be identified and/or characterized by

Accepted Answer

A)  their similar and characteristic staining patterns. 
B)  the different centromere positions in the maternal versus paternal chromosomes. 
C)  those chromosomes that do not have partners. 
D)  paternal chromosomes only. 
E)  maternal chromosomes only. 
A)  their similar and characteristic staining patterns. 
B)  the different centromere positions in the maternal versus paternal chromosomes. 
C)  those chromosomes that do not have partners. 
D)  paternal chromosomes only. 
E)  maternal chromosomes only.

Question 17

Draw and label the parts of a sister chromatid. List the function of each structure.

Accepted Answer

The drawing should r

Question 18

Plant hormones known as ____ stimulate mitosis.

Accepted Answer

A)  scaffolding proteins 
B)  growth factors 
C)  cytokinins 
D)  cyclins 
E)  cohesins 
A)  scaffolding proteins 
B)  growth factors 
C)  cytokinins 
D)  cyclins 
E)  cohesins

Question 19

In a human cell at prophase I, there are ____ tetrads.

Accepted Answer

A)  92 
B)  46 
C)  23 
D)  2 
E)  4 
A)  92 
B)  46 
C)  23 
D)  2 
E)  4

Question 20

The nuclear envelope fragments during the prometaphase stage.

Accepted Answer

A) True 
 B)False

Exam 10: Chromosomes, Mitosis, and Meiosis

During prophase I of meiosis, homologous chromosomes lie side by side. This phenomenon is known as

Briefly explain the difference between meiosis I and mitosis. Also, explain the reasons for these differences.

In unwound chromatin, nucleosomes are organized into large coiled loops held together by

A pair of centrioles is found at the center of the microtubule-organizing center in plant cells.

Gametophyte plants produce gametes using

A cell is dividing by binary fission. What can you conclude?

To control the cell cycle,

The function of nucleosomes is to

Figure 10-2 ​ ​ The process occurring at arrow 3 in the accompanying figure is

Chromosomes are duplicated during the ____ of the cell cycle.

An animal with a diploid number of 36 chromosomes will have ____ chromosomes in its gametes and ____ chromosomes in its somatic cells.

Homologous chromosomes can be identified and/or characterized by

Draw and label the parts of a sister chromatid. List the function of each structure.

Plant hormones known as ____ stimulate mitosis.

In a human cell at prophase I, there are ____ tetrads.

The nuclear envelope fragments during the prometaphase stage.

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

The Basic Principles of Heredity

DNA: The Carrier of Genetic Information

Gene Expression

Gene Regulation

DNA Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology: Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

Figure 10-2 The process occurring at arrow 3 in the accompanying figure is

An animal with a diploid number of 36 chromosomes will have chromosomes in its gametes and chromosomes in its somatic cells.