Question 1

Which of the following are products of meiosis?

Accepted Answer

A) gametes in animals and spores in plants 
B) gametes and spores in plants 
C) body cells in animals and spores in plants 
D) body cells in animals and plants 
A) gametes in animals and spores in plants 
B) gametes and spores in plants 
C) body cells in animals and spores in plants 
D) body cells in animals and plants A

Question 2

Certain cell types in humans, such as skeletal muscle cells, have several nuclei per cell. Based on what we know about mitosis, how could this happen?

Accepted Answer

A) The cell undergoes repeated mitosis with associated cytokinesis. 
B) The cell undergoes repeated cytokinesis, but not mitosis. 
C) The cell undergoes anaphase twice before entering telophase. 
D) The cell undergoes repeated mitosis, but not cytokinesis. 
A) The cell undergoes repeated mitosis with associated cytokinesis. 
B) The cell undergoes repeated cytokinesis, but not mitosis. 
C) The cell undergoes anaphase twice before entering telophase. 
D) The cell undergoes repeated mitosis, but not cytokinesis. D

Question 3

Which of the following occurs during metaphase of mitosis?

Accepted Answer

A) Centrioles migrate to opposite poles of the cell. 
B) Chromatin condenses into chromosomes. 
C) The nuclear envelope disappears. 
D) Chromosomes decondense into chromatin. 
A) Centrioles migrate to opposite poles of the cell. 
B) Chromatin condenses into chromosomes. 
C) The nuclear envelope disappears. 
D) Chromosomes decondense into chromatin. A

Question 4

Identify the stage of mitosis in which each activity occurs.
-Spindle fibre begins to form.

Accepted Answer

A) prophase 
B) prometaphase 
C) metaphase 
D) anaphase 
E) telophase 
A) prophase 
B) prometaphase 
C) metaphase 
D) anaphase 
E) telophase

Question 5

Photomicrograph by Dr. Conly L. Rieder, East Greenbush, New York
-Which stage of mitosis is shown in photo E in the figure?

Accepted Answer

A) interphase 
B) metaphase 
C) prophase 
D) anaphase 
A) interphase 
B) metaphase 
C) prophase 
D) anaphase

Question 6

Signalling molecules, such as peptide hormones and growth factors, bind to receptors on the cell surface, which subsequently trigger reactions in the cell. Which of the following is among the reactions?

Accepted Answer

A) causing cells to enter the G0 state 
B) stopping cell division 
C) initiating cell division 
D) slowing the rate of cell division 
A) causing cells to enter the G0 state 
B) stopping cell division 
C) initiating cell division 
D) slowing the rate of cell division

Question 7

Which of the following is an example of an "executioner" enzyme in the cell?

Accepted Answer

A) caspases 
B) cytokinin 
C) kinase 
D) roscovitine 
A) caspases 
B) cytokinin 
C) kinase 
D) roscovitine

Question 8

Which sequence of the cell cycle is correct?

Accepted Answer

A) anaphase   interphase   telophase   prometaphase   prophase   metaphase 
B) prophase   metaphase   interphase   telophase   anaphase 
C) prometaphase   anaphase   prophase   telophase   interphase   metaphase 
D) interphase   prophase   prometaphase   metaphase   anaphase   telophase 
A) anaphase   interphase   telophase   prometaphase   prophase   metaphase 
B) prophase   metaphase   interphase   telophase   anaphase 
C) prometaphase   anaphase   prophase   telophase   interphase   metaphase 
D) interphase   prophase   prometaphase   metaphase   anaphase   telophase

Question 9

Hereditary information is encoded in a single, circular DNA molecule in most prokaryotes. What is another feature of the prokaryotic hereditary information?

Accepted Answer

A) The bacterial chromosomes do not have genes that control binary fission. 
B) Bacterial cells cannot replicate their DNA very rapidly. 
C) Bacterial cells do not utilize a mitotic spindle to segregate their replicated DNA. 
D) The DNA of the bacterial chromosome is not replicated prior to segregation. 
A) The bacterial chromosomes do not have genes that control binary fission. 
B) Bacterial cells cannot replicate their DNA very rapidly. 
C) Bacterial cells do not utilize a mitotic spindle to segregate their replicated DNA. 
D) The DNA of the bacterial chromosome is not replicated prior to segregation.

Question 10

Where in the cell would the centromere be found?

Accepted Answer

A) in a central region of a chromosome where the spindle microtubules attach 
B) in a position where metaphase chromosomes align 
C) in a location where chromosomes cluster during telophase 
D) in a location where the mitotic spindle forms 
A) in a central region of a chromosome where the spindle microtubules attach 
B) in a position where metaphase chromosomes align 
C) in a location where chromosomes cluster during telophase 
D) in a location where the mitotic spindle forms

Question 11

Which of the following best compares meiosis and mitosis?

Accepted Answer

A) Meiosis produces daughter nuclei that have the same number of chromosomes as the original cell, while mitosis produces daughter nuclei with a different number of chromosomes as the original cell. 
B) Meiosis produces daughter nuclei that have half the number of chromosomes as the original cell, while mitosis produces daughter nuclei with the same number of chromosomes as the original cell. 
C) Meiosis produces daughter nuclei that have the same number of chromosomes as the original cell, while mitosis produces daughter nuclei with half the number of chromosomes as the original cell. 
D) Meiosis and mitosis both produce daughter nuclei with a different number of chromosomes than the original cell. 
A) Meiosis produces daughter nuclei that have the same number of chromosomes as the original cell, while mitosis produces daughter nuclei with a different number of chromosomes as the original cell. 
B) Meiosis produces daughter nuclei that have half the number of chromosomes as the original cell, while mitosis produces daughter nuclei with the same number of chromosomes as the original cell. 
C) Meiosis produces daughter nuclei that have the same number of chromosomes as the original cell, while mitosis produces daughter nuclei with half the number of chromosomes as the original cell. 
D) Meiosis and mitosis both produce daughter nuclei with a different number of chromosomes than the original cell.

Question 12

In both plant cells and animal cells, where do the microtubles of the mitotic spindle originate?

Accepted Answer

A) in the centromere 
B) in the organizing centres 
C) in the chromatid 
D) in the centriole 
A) in the centromere 
B) in the organizing centres 
C) in the chromatid 
D) in the centriole

Question 13

Identify the stage of mitosis in which each activity occurs.
-Chromosomes align at the centre of the cell.

Accepted Answer

A) prophase 
B) prometaphase 
C) metaphase 
D) anaphase 
E) telophase 
A) prophase 
B) prometaphase 
C) metaphase 
D) anaphase 
E) telophase

Question 14

Identify the stage of mitosis in which each activity occurs.
-Mitotic spindle disassembles.

Accepted Answer

A) prophase 
B) prometaphase 
C) metaphase 
D) anaphase 
E) telophase 
A) prophase 
B) prometaphase 
C) metaphase 
D) anaphase 
E) telophase

Question 15

What are the cells produced by mitotic divisions considered to be?

Accepted Answer

A) genetically different 
B) two thirds genetically identical 
C) half genetically identical 
D) genetically identical 
A) genetically different 
B) two thirds genetically identical 
C) half genetically identical 
D) genetically identical

Question 16

Which of the following is synonymous with apoptosis?

Accepted Answer

A) programmed cell death 
B) the loss of contact inhibition 
C) programmed cell life 
D) the gain of contact inhibition 
A) programmed cell death 
B) the loss of contact inhibition 
C) programmed cell life 
D) the gain of contact inhibition

Question 17

Vinblastine, a chemotherapeutic drug used to treat breast and testicular cancers, interferes with the assembly of microtubules. How does this drug work to inhibit cancer cell growth?

Accepted Answer

A) It inhibits transition from G1 to S. 
B) It disrupts mitotic spindle formation, and consequently mitosis. 
C) It inhibits cytokinesis. 
D) It inhibits transition from S to mitosis. 
A) It inhibits transition from G1 to S. 
B) It disrupts mitotic spindle formation, and consequently mitosis. 
C) It inhibits cytokinesis. 
D) It inhibits transition from S to mitosis.

Question 18

Identify the stage of mitosis in which each activity occurs.
-Daughter chromosomes decondense and the nuclear envelope reforms.

Accepted Answer

A) prophase 
B) prometaphase 
C) metaphase 
D) anaphase 
E) telophase 
A) prophase 
B) prometaphase 
C) metaphase 
D) anaphase 
E) telophase

Question 19

Which of the following is synonymous with cellular senescence?

Accepted Answer

A) the loss of proliferative ability 
B) the gain of proliferative ability 
C) the gain of contact inhibition 
D) the loss of contact inhibition 
A) the loss of proliferative ability 
B) the gain of proliferative ability 
C) the gain of contact inhibition 
D) the loss of contact inhibition

Question 20

How are binary fission and mitosis different?

Accepted Answer

A) Binary fission is found in eukaryotes, while mitosis is not. 
B) Mitosis helps an organism to grow, while binary fission does not. 
C) Mitosis does not occur in phases, while binary fission does. 
D) Binary fission helps an organism to grow, while mitosis does not. 
A) Binary fission is found in eukaryotes, while mitosis is not. 
B) Mitosis helps an organism to grow, while binary fission does not. 
C) Mitosis does not occur in phases, while binary fission does. 
D) Binary fission helps an organism to grow, while mitosis does not.

Exam 8: Cell Cycles

Which of the following are products of meiosis?

Certain cell types in humans, such as skeletal muscle cells, have several nuclei per cell. Based on what we know about mitosis, how could this happen?

Which of the following occurs during metaphase of mitosis?

Identify the stage of mitosis in which each activity occurs. -Spindle fibre begins to form.

Photomicrograph by Dr. Conly L. Rieder, East Greenbush, New York -Which stage of mitosis is shown in photo E in the figure?

Signalling molecules, such as peptide hormones and growth factors, bind to receptors on the cell surface, which subsequently trigger reactions in the cell. Which of the following is among the reactions?

Which of the following is an example of an "executioner" enzyme in the cell?

Which sequence of the cell cycle is correct?

Hereditary information is encoded in a single, circular DNA molecule in most prokaryotes. What is another feature of the prokaryotic hereditary information?

Where in the cell would the centromere be found?

Which of the following best compares meiosis and mitosis?

In both plant cells and animal cells, where do the microtubles of the mitotic spindle originate?

Identify the stage of mitosis in which each activity occurs. -Chromosomes align at the centre of the cell.

Identify the stage of mitosis in which each activity occurs. -Mitotic spindle disassembles.

What are the cells produced by mitotic divisions considered to be?

Which of the following is synonymous with apoptosis?

Vinblastine, a chemotherapeutic drug used to treat breast and testicular cancers, interferes with the assembly of microtubules. How does this drug work to inhibit cancer cell growth?

Identify the stage of mitosis in which each activity occurs. -Daughter chromosomes decondense and the nuclear envelope reforms.

Which of the following is synonymous with cellular senescence?

How are binary fission and mitosis different?

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Transport in Animals: the Circulatory System

Reproduction in Animals

Animal Development

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Muscles, Skeletons, and Body Movements

Animal Behaviour

Animal Nutrition

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

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