Question 1

Cytoplasmic division in animal cells involves all EXCEPT

Accepted Answer

A) formation of a cell plate. 
B) a contractile ring mechanism. 
C) a deepening cleavage furrow. 
D) a ring of actin filaments under the plasma membrane at the equator. 
E) ATP. 
A) formation of a cell plate. 
B) a contractile ring mechanism. 
C) a deepening cleavage furrow. 
D) a ring of actin filaments under the plasma membrane at the equator. 
E) ATP. A

Question 2

When a cell undergoes mitosis,

Accepted Answer

A) the daughter cells have identical genes. 
B) the daughter cell has genes identical to those of the mother cell that produced it. 
C) the amount of cytoplasm in the mother cell and in each of the daughter cells is equal. 
D) there is an exact duplication and division of all of the organelles between daughter cells. 
E) the daughter cells have identical genes, and the daughter cell has genes identical to those of the mother cell that produced it. 
A) the daughter cells have identical genes. 
B) the daughter cell has genes identical to those of the mother cell that produced it. 
C) the amount of cytoplasm in the mother cell and in each of the daughter cells is equal. 
D) there is an exact duplication and division of all of the organelles between daughter cells. 
E) the daughter cells have identical genes, and the daughter cell has genes identical to those of the mother cell that produced it. E

Question 3

Proteins that resemble spools on which DNA molecules are wound are called

Accepted Answer

A) kinetochores. 
B) centrioles. 
C) motor proteins. 
D) histones. 
E) spindles. 
A) kinetochores. 
B) centrioles. 
C) motor proteins. 
D) histones. 
E) spindles. D

Question 4

The number of DNA molecules in a duplicated chromosome is

Accepted Answer

A) one. 
B) undetermined. 
C) half that of an unduplicated chromosome. 
D) two. 
E) four. 
A) one. 
B) undetermined. 
C) half that of an unduplicated chromosome. 
D) two. 
E) four.

Question 5

When the chromosome is most condensed, which of the following is true?

Accepted Answer

A) Proteins are used to wind up the DNA. 
B) They are less susceptible to radiation. 
C) Lipid droplets form "beads on a string." 
D) Carbohydrates wind the DNA into clusters. 
E) None of these are true. 
A) Proteins are used to wind up the DNA. 
B) They are less susceptible to radiation. 
C) Lipid droplets form "beads on a string." 
D) Carbohydrates wind the DNA into clusters. 
E) None of these are true.

Question 6

Mitosis and cytoplasmic division function in

Accepted Answer

A) growth. 
B) repair of damaged tissue. 
C) replacement of worn-out cells. 
D) asexual reproduction. 
E) all of these. 
A) growth. 
B) repair of damaged tissue. 
C) replacement of worn-out cells. 
D) asexual reproduction. 
E) all of these.

Question 7

DNA replication occurs

Accepted Answer

A) between the gap phases of interphase. 
B) immediately before prophase of mitosis. 
C) during prophase of mitosis. 
D) during prophase of meiosis. 
E) at any time during cell division. 
A) between the gap phases of interphase. 
B) immediately before prophase of mitosis. 
C) during prophase of mitosis. 
D) during prophase of meiosis. 
E) at any time during cell division.

Question 8

In which of the stages below does each chromosome consist of two DNA molecules? I.metaphase
II)telophase
III)prophase
IV)anaphase

Accepted Answer

A) III and IV 
B) I, III, and IV 
C) I and III 
D) I, II, and III 
E) I, II, III, and IV 
A) III and IV 
B) I, III, and IV 
C) I and III 
D) I, II, and III 
E) I, II, III, and IV

Question 9

The interval before the onset of DNA replication is called

Accepted Answer

A) the G1 stage. 
B) the G2 stage. 
C) the M stage. 
D) the S stage. 
E) all of these stages. 
A) the G1 stage. 
B) the G2 stage. 
C) the M stage. 
D) the S stage. 
E) all of these stages.

Question 10

The unique feature of HeLa cells that make them important for research is that

Accepted Answer

A) they are identical to all other human cells. 
B) they are immortal cells and will grow in culture. 
C) they are limited in growth cycles. 
D) they are like stem cells. 
E) all of these make them important. 
A) they are identical to all other human cells. 
B) they are immortal cells and will grow in culture. 
C) they are limited in growth cycles. 
D) they are like stem cells. 
E) all of these make them important.

Question 11

Which of the following is NOT true of spindles?

Accepted Answer

A) They are permanent cell structures. 
B) Centrosomes act as microtubule originating centers for spindles. 
C) Some of their microtubules overlap at the cell equator. 
D) They are composed of microtubules. 
E) They are bipolar. 
A) They are permanent cell structures. 
B) Centrosomes act as microtubule originating centers for spindles. 
C) Some of their microtubules overlap at the cell equator. 
D) They are composed of microtubules. 
E) They are bipolar.

Question 12

In eukaryotic cells, which can occur during the stages of mitosis?

Accepted Answer

A) the duplication of chromatids 
B) the replication of DNA 
C) synapsis and crossing over 
D) fragmentation and disappearance of nuclear envelope 
E) all of these 
A) the duplication of chromatids 
B) the replication of DNA 
C) synapsis and crossing over 
D) fragmentation and disappearance of nuclear envelope 
E) all of these

Question 13

Which of the following statements concerning cancer cells is most accurate?

Accepted Answer

A) Oncogenes are part of the regulatory section of a chromosome. 
B) Tumor cells have lost their inhibition to stop dividing. 
C) Oncogenes help control runaway cell division. 
D) Benign tumors usually spread to other body parts. 
E) Metastasis is the spread of benign tumors. 
A) Oncogenes are part of the regulatory section of a chromosome. 
B) Tumor cells have lost their inhibition to stop dividing. 
C) Oncogenes help control runaway cell division. 
D) Benign tumors usually spread to other body parts. 
E) Metastasis is the spread of benign tumors.

Question 14

Unusual growth of cells that do not pose a threat to surrounding tissues are termed

Accepted Answer

A) malignant. 
B) benign. 
C) metastatic. 
D) carcinogenic. 
E) repressed. 
A) malignant. 
B) benign. 
C) metastatic. 
D) carcinogenic. 
E) repressed.

Question 15

The above figure reveals which of the following about the organism that it was obtained from?

Accepted Answer

A) male 
B) female 
C) human 
D) mouse 
E) two of these are correct 
A) male 
B) female 
C) human 
D) mouse 
E) two of these are correct

Question 16

The spindle apparatus is composed of

Accepted Answer

A) Golgi bodies. 
B) microtubules. 
C) endoplasmic reticulum. 
D) nucleoprotein. 
E) chromatids. 
A) Golgi bodies. 
B) microtubules. 
C) endoplasmic reticulum. 
D) nucleoprotein. 
E) chromatids.

Question 17

Division of eukaryotic cells into two identical cells is called

Accepted Answer

A) growth. 
B) meiosis. 
C) mitosis. 
D) asexual reproduction. 
E) all of these. 
A) growth. 
B) meiosis. 
C) mitosis. 
D) asexual reproduction. 
E) all of these.

Question 18

Which of the following statements is false?

Accepted Answer

A) Chromosomes do not pair during mitosis. 
B) Genes and chromosomes are duplicated during prophase. 
C) Each species has a specific number of chromosomes. 
D) New nuclei are formed during telophase. 
E) A diploid cell will produce two diploid daughter cells by mitosis. 
A) Chromosomes do not pair during mitosis. 
B) Genes and chromosomes are duplicated during prophase. 
C) Each species has a specific number of chromosomes. 
D) New nuclei are formed during telophase. 
E) A diploid cell will produce two diploid daughter cells by mitosis.

Question 19

HeLa cells have been used in research to

Accepted Answer

A) identify viral strains. 
B) investigate cancer. 
C) study the effects of radiation on cells. 
D) develop tissue culture techniques that produced a polio vaccine. 
E) all of these. 
A) identify viral strains. 
B) investigate cancer. 
C) study the effects of radiation on cells. 
D) develop tissue culture techniques that produced a polio vaccine. 
E) all of these.

Question 20

Mitosis comes from the Greek word "mitos," which means

Accepted Answer

A) divide. 
B) grow. 
C) swell. 
D) thread. 
E) shrink. 
A) divide. 
B) grow. 
C) swell. 
D) thread. 
E) shrink.

Exam 9: How Cells Reproduce

Cytoplasmic division in animal cells involves all EXCEPT

When a cell undergoes mitosis,

Proteins that resemble spools on which DNA molecules are wound are called

The number of DNA molecules in a duplicated chromosome is

When the chromosome is most condensed, which of the following is true?

Mitosis and cytoplasmic division function in

DNA replication occurs

In which of the stages below does each chromosome consist of two DNA molecules? I.metaphase II)telophase III)prophase IV)anaphase

The interval before the onset of DNA replication is called

The unique feature of HeLa cells that make them important for research is that

Which of the following is NOT true of spindles?

In eukaryotic cells, which can occur during the stages of mitosis?

Which of the following statements concerning cancer cells is most accurate?

Unusual growth of cells that do not pose a threat to surrounding tissues are termed

The above figure reveals which of the following about the organism that it was obtained from?

The spindle apparatus is composed of

Division of eukaryotic cells into two identical cells is called

Which of the following statements is false?

HeLa cells have been used in research to

Mitosis comes from the Greek word "mitos," which means

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters