Question 1

Why don't plant cells form a cleavage furrow during cytokinesis?

Accepted Answer

A) because they don't have a cell membrane 
B) because their cells don't divide after mitosis,but become one larger cell with multiple nuclei 
C) because they have a cell wall 
D) because they don't have a nucleus 
E) All answers are correct. 
A) because they don't have a cell membrane 
B) because their cells don't divide after mitosis,but become one larger cell with multiple nuclei 
C) because they have a cell wall 
D) because they don't have a nucleus 
E) All answers are correct.

Question 2

The first sign of cytokinesis in a plant cell is the formation of a

Accepted Answer

A) nuclear envelope. 
B) nucleolus. 
C) cleavage furrow. 
D) cell plate. 
E) spindle fiber. 
A) nuclear envelope. 
B) nucleolus. 
C) cleavage furrow. 
D) cell plate. 
E) spindle fiber.

Question 3

The plant cell in the image labeled "b" is in the cell cycle stage

Accepted Answer

A) interphase. 
B) telophase. 
C) anaphase. 
D) metaphase. 
E) prophasE. 
A) interphase. 
B) telophase. 
C) anaphase. 
D) metaphase. 
E) prophasE.

Question 4

Meiosis is a process used for

Accepted Answer

A) repair of damaged cells. 
B) growth of an organism. 
C) asexual reproduction. 
D) production of stem cells. 
E) production of gametes. 
A) repair of damaged cells. 
B) growth of an organism. 
C) asexual reproduction. 
D) production of stem cells. 
E) production of gametes.

Question 5

The enzyme that unwinds DNA is

Accepted Answer

A) helicase. 
B) interphase. 
C) DNA polymerase. 
D) prophase. 
E) ligasE. 
A) helicase. 
B) interphase. 
C) DNA polymerase. 
D) prophase. 
E) ligasE.

Question 6

The correct sequence for the phases of mitosis is

Accepted Answer

A) interphase - prophase - metaphase - anaphase - telophase - cytokinesis. 
B) interphase - prophase - metaphase - anaphase - telophase. 
C) metaphase - anaphase - prophase - telophase. 
D) prophase - metaphase - cytokinesis - anaphase - telophase. 
E) prophase - metaphase - anaphase - telophasE. 
A) interphase - prophase - metaphase - anaphase - telophase - cytokinesis. 
B) interphase - prophase - metaphase - anaphase - telophase. 
C) metaphase - anaphase - prophase - telophase. 
D) prophase - metaphase - cytokinesis - anaphase - telophase. 
E) prophase - metaphase - anaphase - telophasE.

Question 7

The process by which DNA reproduces itself is

Accepted Answer

A) protein synthesis. 
B) aerobic respiration. 
C) replication. 
D) substrate-phosphorylation. 
E) photosynthesis. 
A) protein synthesis. 
B) aerobic respiration. 
C) replication. 
D) substrate-phosphorylation. 
E) photosynthesis.

Question 8

In the section "Investigating Life: Cutting Off a Tumor's Supply Lines in the War on Cancer",what did the researchers conclude from part a.of the figure?

Accepted Answer

A) Endostatin shrank tumors but resistance developed. 
B) The standard chemotherapy drug delayed the growth of tumors without development of resistance. 
C) Endostatin shrank tumors without development of resistance. 
D) The standard chemotherapy drug delayed the growth of tumors but resistance developeD. 
E) Tumors in untreated cells shrank in sizE. 
A) Endostatin shrank tumors but resistance developed. 
B) The standard chemotherapy drug delayed the growth of tumors without development of resistance. 
C) Endostatin shrank tumors without development of resistance. 
D) The standard chemotherapy drug delayed the growth of tumors but resistance developeD. 
E) Tumors in untreated cells shrank in sizE.

Question 9

The plant cell in the image labeled "a" is in the cell cycle stage

Accepted Answer

A) interphase. 
B) prophase. 
C) anaphase. 
D) telophase. 
E) metaphasE. 
A) interphase. 
B) prophase. 
C) anaphase. 
D) telophase. 
E) metaphasE.

Question 10

Eukaryotic chromosomes become visible with a light microscope before cell division because

Accepted Answer

A) they become less tightly wound. 
B) they become more tightly wound. 
C) they increase in length. 
D) they leave the cell. 
E) they increase in length and leave the cell. 
A) they become less tightly wound. 
B) they become more tightly wound. 
C) they increase in length. 
D) they leave the cell. 
E) they increase in length and leave the cell.

Question 11

Strands of DNA are joined by

Accepted Answer

A) hydrogen bonds. 
B) covalent bonds. 
C) ionic bonds. 
D) phosphodiester bonds. 
A) hydrogen bonds. 
B) covalent bonds. 
C) ionic bonds. 
D) phosphodiester bonds.

Question 12

The division of the nucleus during the eukaryotic cell cycle is

Accepted Answer

A) mitosis. 
B) interphase. 
C) synthesis. 
D) cytokinesis. 
E) replication. 
A) mitosis. 
B) interphase. 
C) synthesis. 
D) cytokinesis. 
E) replication.

Question 13

Replication takes place during the G1 phase of interphase.

Accepted Answer

A) True 
 B)False

Question 14

In the section "Investigating Life: Cutting Off a Tumor's Supply Lines in the War on Cancer",what is the dependent variable in the figure?

Accepted Answer

A) volume of the tumor in humans 
B) treatment days 
C) treatment with endostatin 
D) treatment with standard chemotherapy drug 
E) the volume of the tumor in mice 
A) volume of the tumor in humans 
B) treatment days 
C) treatment with endostatin 
D) treatment with standard chemotherapy drug 
E) the volume of the tumor in mice

Question 15

The phase of mitosis in which the chromosomes are aligned along the equator of the cell is

Accepted Answer

A) metaphase. 
B) prophase. 
C) interphase. 
D) anaphase. 
E) telophasE. 
A) metaphase. 
B) prophase. 
C) interphase. 
D) anaphase. 
E) telophasE.

Question 16

DNA and associated proteins in the nucleus defines the term

Accepted Answer

A) centromere. 
B) nucleosome. 
C) histone. 
D) chromatin. 
E) chromosomE. 
A) centromere. 
B) nucleosome. 
C) histone. 
D) chromatin. 
E) chromosomE.

Question 17

Which of the following is correct about both binary fission and meiosis?

Accepted Answer

A) Both result in genetically-identical cells. 
B) Both result in one daughter cell. 
C) Both are asexual forms of cell reproduction. 
D) Both replicate the DNA before the cell splits. 
E) All answers are correct. 
A) Both result in genetically-identical cells. 
B) Both result in one daughter cell. 
C) Both are asexual forms of cell reproduction. 
D) Both replicate the DNA before the cell splits. 
E) All answers are correct.

Question 18

An abnormal mass of tissue is a tumor.

Accepted Answer

A) True 
 B)False

Question 19

A replicated chromosome consists of two sister chromatids.

Accepted Answer

A) True 
 B)False

Question 20

During the cell cycle there are several checkpoints that ensure that the cell cycle is proceeding correctly.

Accepted Answer

A) True 
 B)False

Exam 8: DNA Replication and Cell Division

Why don't plant cells form a cleavage furrow during cytokinesis?

The first sign of cytokinesis in a plant cell is the formation of a

The plant cell in the image labeled "b" is in the cell cycle stage

Meiosis is a process used for

The enzyme that unwinds DNA is

The correct sequence for the phases of mitosis is

The process by which DNA reproduces itself is

In the section "Investigating Life: Cutting Off a Tumor's Supply Lines in the War on Cancer",what did the researchers conclude from part a.of the figure?

The plant cell in the image labeled "a" is in the cell cycle stage

Eukaryotic chromosomes become visible with a light microscope before cell division because

Strands of DNA are joined by

The division of the nucleus during the eukaryotic cell cycle is

Replication takes place during the G1 phase of interphase.

In the section "Investigating Life: Cutting Off a Tumor's Supply Lines in the War on Cancer",what is the dependent variable in the figure?

The phase of mitosis in which the chromosomes are aligned along the equator of the cell is

DNA and associated proteins in the nucleus defines the term

Which of the following is correct about both binary fission and meiosis?

An abnormal mass of tissue is a tumor.

A replicated chromosome consists of two sister chromatids.

During the cell cycle there are several checkpoints that ensure that the cell cycle is proceeding correctly.

Scientific Study of Life

The Chemistry of Life

Cells

The Energy of Life

Photosynthesis

How Cells Release Energy

DNA Structure and Gene Function

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Population Ecology

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

Regulating Temperature, nutrients, and Body Fluids

The Immune System

Animal Reproduction and Development

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