Question 1

Which of the following statements in relation to cytokinesis is INCORRECT?

Accepted Answer

A)  Cytokinesis begins late in mitosis. 
B)  Cytokinesis can involve pinching of the cytoplasmic membrane. 
C)  Cytokinesis obligatorily includes the deposition of a new membrane between separated chromosomes. 
D)  Cytokinesis and mitosis are separable events. 
E)  The creation of new cells is dependent on cytokinesis. 
A)  Cytokinesis begins late in mitosis. 
B)  Cytokinesis can involve pinching of the cytoplasmic membrane. 
C)  Cytokinesis obligatorily includes the deposition of a new membrane between separated chromosomes. 
D)  Cytokinesis and mitosis are separable events. 
E)  The creation of new cells is dependent on cytokinesis.

Question 2

Which of the following is INCORRECT in relation to the G1 cell cycle phase

Accepted Answer

A)  It is also known as the first gap phase. 
B)  It is the longest part of the cell cycle. 
C)  It is the first part of interphase. 
D)  It immediately follows the completion of mitosis. 
E)  It is the period in which DNA is replicated. 
A)  It is also known as the first gap phase. 
B)  It is the longest part of the cell cycle. 
C)  It is the first part of interphase. 
D)  It immediately follows the completion of mitosis. 
E)  It is the period in which DNA is replicated.

Question 3

Chromosomes consist of a single chromatid during

Accepted Answer

A)  prophase of mitosis. 
B)  metaphase of mitosis. 
C)  anaphase I of meiosis. 
D)  anaphase II of meiosis. 
E)  metaphase I of meiosis. 
A)  prophase of mitosis. 
B)  metaphase of mitosis. 
C)  anaphase I of meiosis. 
D)  anaphase II of meiosis. 
E)  metaphase I of meiosis.

Question 4

After S phase and before mitosis, a chromosome consists of two chromatids

Accepted Answer

A)  held together at the centromere. 
B)  each containing one long molecule of DNA. 
C)  which are genetically identical. 
D)  in an enlarged nucleus. 
E)  All of the statements are true. 
A)  held together at the centromere. 
B)  each containing one long molecule of DNA. 
C)  which are genetically identical. 
D)  in an enlarged nucleus. 
E)  All of the statements are true.

Question 5

In prokaryotes, what is the process mediated by the ftsZ proteins during cell division?

Accepted Answer

A)  only eukaryotes carry the genes that encode for the ftsZ proteins. 
B)  cell wall 'softening' so it can expand and extend across two cells. 
C)  the growth of the cell wall and membrane across the middle of the cell. 
D)  the formation of a ring of microfilaments perpendicular to the point of cell division. 
E)  chromosomal duplication. 
A)  only eukaryotes carry the genes that encode for the ftsZ proteins. 
B)  cell wall 'softening' so it can expand and extend across two cells. 
C)  the growth of the cell wall and membrane across the middle of the cell. 
D)  the formation of a ring of microfilaments perpendicular to the point of cell division. 
E)  chromosomal duplication.

Question 6

Interphase is composed of

Accepted Answer

A)  G2 +M. 
B)  G1 + S + G2. 
C)  prophase + prometaphase + metaphase + anaphase. 
D)  cytokinesis + mitosis. 
E)  meiosis I + meiosis II. 
A)  G2 +M. 
B)  G1 + S + G2. 
C)  prophase + prometaphase + metaphase + anaphase. 
D)  cytokinesis + mitosis. 
E)  meiosis I + meiosis II.

Question 7

In plant cells, the position at which the new cell wall will form is indicated by

Accepted Answer

A)  the point at which the circular chromosome is attached to the plasma membrane. 
B)  a point equidistant between the poles of the aster. 
C)  a point at the middle of the cell. 
D)  a band of microtubules near the cell wall before prophase commences. 
E)  the position of the centriole in the cell. 
A)  the point at which the circular chromosome is attached to the plasma membrane. 
B)  a point equidistant between the poles of the aster. 
C)  a point at the middle of the cell. 
D)  a band of microtubules near the cell wall before prophase commences. 
E)  the position of the centriole in the cell.

Question 8

The two identical copies of chromosomes produced in a cell during DNA synthesis are called

Accepted Answer

A)  chromatids. 
B)  sister chromatids. 
C)  sister chromosomes. 
D)  homologous chromosomes. 
E)  homologous chromatids. 
A)  chromatids. 
B)  sister chromatids. 
C)  sister chromosomes. 
D)  homologous chromosomes. 
E)  homologous chromatids.

Question 9

In animal cells undergoing mitosis, division of the cytoplasm is caused by a contracting ring of

Accepted Answer

A)  interphase microtubules. 
B)  kinetochore fibres. 
C)  actin filaments. 
D)  tubulin filaments. 
E)  midbody fibres. 
A)  interphase microtubules. 
B)  kinetochore fibres. 
C)  actin filaments. 
D)  tubulin filaments. 
E)  midbody fibres.

Question 10

In cell division, the 'Start' point defines the point at which the cell commits to progression through the cell cycle. Which of the following are true about the Start point?

Accepted Answer

A)  It occurs at the beginning of S phase when DNA synthesis commences. 
B)  It is the point in the cell cycle when the MPF complex accumulates. 
C)  It is the point in anaphase when the sister chromatids separate from each other. 
D)  It signals the commencement of Meiosis II. 
E)  It is the point when a cyclin-dependent kinase binds to a cyclin and the complex activates genes required for DNA synthesis. 
A)  It occurs at the beginning of S phase when DNA synthesis commences. 
B)  It is the point in the cell cycle when the MPF complex accumulates. 
C)  It is the point in anaphase when the sister chromatids separate from each other. 
D)  It signals the commencement of Meiosis II. 
E)  It is the point when a cyclin-dependent kinase binds to a cyclin and the complex activates genes required for DNA synthesis.

Question 11

In sexual reproduction of eukaryotes

Accepted Answer

A)  the gametes are usually diploid. 
B)  the zygotes are usually haploid. 
C)  fusion occurs immediately after meiosis. 
D)  the egg and sperm are produced by mitosis. 
E)  meiosis halves the number of chromosomes. 
A)  the gametes are usually diploid. 
B)  the zygotes are usually haploid. 
C)  fusion occurs immediately after meiosis. 
D)  the egg and sperm are produced by mitosis. 
E)  meiosis halves the number of chromosomes.

Question 12

Chromatids of homologous chromosomes may exchange genetic material

Accepted Answer

A)  during prophase of mitosis. 
B)  during metaphase of meiosis I. 
C)  during interphase. 
D)  during prophase I of meiosis. 
E)  between meiosis I and meiosis II. 
A)  during prophase of mitosis. 
B)  during metaphase of meiosis I. 
C)  during interphase. 
D)  during prophase I of meiosis. 
E)  between meiosis I and meiosis II.

Question 13

Phragmoplasts are

Accepted Answer

A)  only found in animal cells. 
B)  made up of contracting actin filaments. 
C)  fibrous structures located at the position of a developing cell wall. 
D)  membrane-bound organelles. 
E)  microtubules which form on the cell wall to join the cell plate. 
A)  only found in animal cells. 
B)  made up of contracting actin filaments. 
C)  fibrous structures located at the position of a developing cell wall. 
D)  membrane-bound organelles. 
E)  microtubules which form on the cell wall to join the cell plate.

Question 14

In the cell cycle

Accepted Answer

A)  DNA replicates at M phase. 
B)  chromosomes become visible under the light microscope at G1 phase. 
C)  differentiated cells exit the cell cycle at S phase. 
D)  important check points control cell cycle progression. 
E)  cytochalasins, which act as anti-actin drugs, prevent progression of the cell cycle. 
A)  DNA replicates at M phase. 
B)  chromosomes become visible under the light microscope at G1 phase. 
C)  differentiated cells exit the cell cycle at S phase. 
D)  important check points control cell cycle progression. 
E)  cytochalasins, which act as anti-actin drugs, prevent progression of the cell cycle.

Question 15

During mitosis in a plant cell, the poles are broad and the spindle barrel-shaped because plant

Accepted Answer

A)  chromosomes do not have kinetochores. 
B)  cells do not have an aster. 
C)  microtubules are made of actin. 
D)  microtubule assemble is not as strong as in animal cells. 
E)  cells do not have centrioles. 
A)  chromosomes do not have kinetochores. 
B)  cells do not have an aster. 
C)  microtubules are made of actin. 
D)  microtubule assemble is not as strong as in animal cells. 
E)  cells do not have centrioles.

Question 16

If a drug which prevents the disassembly of microtubules is added to cells early in cell division it would be expected to disrupt

Accepted Answer

A)  cytokinesis. 
B)  DNA replication. 
C)  condensation of the chromosomes. 
D)  formation of the mitotic spindle fibres. 
E)  movement of the chromosomes. 
A)  cytokinesis. 
B)  DNA replication. 
C)  condensation of the chromosomes. 
D)  formation of the mitotic spindle fibres. 
E)  movement of the chromosomes.

Question 17

There a number of differences between anaphase of mitosis and anaphase I of meiosis. The following feature is only found in anaphase of mitosis.

Accepted Answer

A)  Centromeres split. 
B)  Homologous chromosomes separate from their partners. 
C)  Spindle fibres shorten. 
D)  Chromosomes line up at the equator of the cell. 
E)  Chromatids are held together by the kinetichore. 
A)  Centromeres split. 
B)  Homologous chromosomes separate from their partners. 
C)  Spindle fibres shorten. 
D)  Chromosomes line up at the equator of the cell. 
E)  Chromatids are held together by the kinetichore.

Question 18

The vinegar fly, Drosophila, has eight chromosomes in normal body cells. At prophase II of meiosis the nucleus will have

Accepted Answer

A)  four chromosomes, each with two chromatids. 
B)  four chromosomes, each with one chromatid. 
C)  eight chromosomes, each with two chromatids. 
D)  eight chromosomes, each with one chromatid. 
E)  eight chromosomes each with four chromatids. 
A)  four chromosomes, each with two chromatids. 
B)  four chromosomes, each with one chromatid. 
C)  eight chromosomes, each with two chromatids. 
D)  eight chromosomes, each with one chromatid. 
E)  eight chromosomes each with four chromatids.

Question 19

During anaphase

Accepted Answer

A)  a chiasma is formed. 
B)  the plasma membrane folds inwards. 
C)  DNA is replicated. 
D)  homologous chromosomes separate and move to opposite poles. 
E)  sister chromatids separate and move to opposite poles. 
A)  a chiasma is formed. 
B)  the plasma membrane folds inwards. 
C)  DNA is replicated. 
D)  homologous chromosomes separate and move to opposite poles. 
E)  sister chromatids separate and move to opposite poles.

Question 20

If a cell ceases to divide during the cell cycle, it exits during _______ and enters a state called ______. Fill in the blanks to complete this statement.

Accepted Answer

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

Exam 8: Cell Division

Which of the following statements in relation to cytokinesis is INCORRECT?

Which of the following is INCORRECT in relation to the G1 cell cycle phase

Chromosomes consist of a single chromatid during

After S phase and before mitosis, a chromosome consists of two chromatids

In prokaryotes, what is the process mediated by the ftsZ proteins during cell division?

Interphase is composed of

In plant cells, the position at which the new cell wall will form is indicated by

The two identical copies of chromosomes produced in a cell during DNA synthesis are called

In animal cells undergoing mitosis, division of the cytoplasm is caused by a contracting ring of

In cell division, the 'Start' point defines the point at which the cell commits to progression through the cell cycle. Which of the following are true about the Start point?

In sexual reproduction of eukaryotes

Chromatids of homologous chromosomes may exchange genetic material

Phragmoplasts are

In the cell cycle

During mitosis in a plant cell, the poles are broad and the spindle barrel-shaped because plant

If a drug which prevents the disassembly of microtubules is added to cells early in cell division it would be expected to disrupt

There a number of differences between anaphase of mitosis and anaphase I of meiosis. The following feature is only found in anaphase of mitosis.

The vinegar fly, Drosophila, has eight chromosomes in normal body cells. At prophase II of meiosis the nucleus will have

During anaphase

If a cell ceases to divide during the cell cycle, it exits during _______ and enters a state called ______. Fill in the blanks to complete this statement.

Nature of Molecules

Biomolecules

The Chemistry of Life

Functioning Cells

Movement Across Membranes

Harvesting Energy

Cells, Tissues and Signals

Inheritance

Genes, Chromosomes and Dna

The Genetic Code

Gene Expression

Genomes, Mutation and Cancer

Viruses

Genetic Engineering and Biotechnology

Reproduction, Growth and Development of Flowering Plants

Structure of Plants

Plant Nutrition, Transport and Adaptation to Stress

Plant Hormones and Growth Responses

Animal Reproduction

Animal Development

Homeostasis: Water, Solutes and Excretion

Gas Exchange in Animals

Circulation

Metabolism, Temperature Regulation and Environmental Stress

Animal and Human Nutrition

Innate Defences and the Immune System

Hormonal Control in Animals

Nervous Systems

Animal Movement

Animal Behaviour

Evolving Life

Evolving Earth

Mechanisms of Evolution

Bacteria

The Protists

Plants

Fungi

Simple Animals: Sponges to Flatworms

Annelids, Molluscs, Nematodes and Arthropods

Echinoderms and Chordates

Australian Biota

Population Ecology

Living in Communities

Ecosystems

Human Impacts

Filters

Which of the following is INCORRECT in relation to the G₁ cell cycle phase

If a cell ceases to divide during the cell cycle, it exits during _ and enters a state called . Fill in the blanks to complete this statement.