Question 1

At the end of metaphase I, separate.

Accepted Answer

A) homologous chromosomes 
B) haploid chromatids 
C) sister chromatids 
D) centrioles 
E) germ cells 
A) homologous chromosomes 
B) haploid chromatids 
C) sister chromatids 
D) centrioles 
E) germ cells A

Question 2

What structure holds the sister chromatids to the spindle fibers?

Accepted Answer

A) kinetochore 
B) centromere 
C) chromatin 
D) cyclin 
E) MPF 
A) kinetochore 
B) centromere 
C) chromatin 
D) cyclin 
E) MPF A

Question 3

At the end of meiosis I, the resulting two cells are

Accepted Answer

A) identical in all ways. 
B) genetically identical. 
C) genetically different. 
D) hexaploid. 
E) prepared to enter interphase so the chromosomes can be replicated. 
A) identical in all ways. 
B) genetically identical. 
C) genetically different. 
D) hexaploid. 
E) prepared to enter interphase so the chromosomes can be replicated. C

Question 4

Match the following examples with mitosis, meiosis, or both
1. __ occurs insomatic cells
2. __ guestis to gametes
3. __ generally produces 4 daughter cells
4. __ required chromosome replication, must be complete beforehand
5. __ produces genetically identical daughter cells

Accepted Answer

1. mitosis; 2. meios

Question 5

Cytokinesis in plant cells differs from cytokinesis in animal cells because

Accepted Answer

A) the contractile protein, actin, is important only in plant cells. 
B) a contractile ring forms only in plant cells. 
C) in plant cells, the cell plate must also divide into two parts. 
D) plant cells have a rigid cell wall. 
E) there is no difference. 
A) the contractile protein, actin, is important only in plant cells. 
B) a contractile ring forms only in plant cells. 
C) in plant cells, the cell plate must also divide into two parts. 
D) plant cells have a rigid cell wall. 
E) there is no difference.

Question 6

Match the following phases with the proper description.
17. ___ $G_1$
18. ___ $G_2$
19. __ mitosis
20. __$S$
21. __cytokinesis
A. a period in which the cell manufactures cellular molecules in preparation for
replication of the genetic material.
B. a period in which the cell prepared for division
C. the actual division of the genetic material
D. the actual splitting of the cytoplasm of the two daughter cells
E.  Replication of DNA

Accepted Answer

17. a; 18.

Question 7

Pairs of chromosomes that are similar in size and genetic composition are

Accepted Answer

A) chromatids. 
B) diploid. 
C) haploid. 
D) chromatin. 
E) homologous chromosomes. 
A) chromatids. 
B) diploid. 
C) haploid. 
D) chromatin. 
E) homologous chromosomes.

Question 8

Explain why there is a difference in the mechanism by which an animal cell and a plant cell accomplishes cytokinesis.

Accepted Answer

Animal cells are surrounded by a plasma

Question 9

Skin cancers typically develop in the

Accepted Answer

A) lower layers of the epidermis. 
B) upper layers of the dermis. 
C) upper layers of the epidermis. 
D) lower layers of the dermis. 
E) subcutaneous layer. 
A) lower layers of the epidermis. 
B) upper layers of the dermis. 
C) upper layers of the epidermis. 
D) lower layers of the dermis. 
E) subcutaneous layer.

Question 10

All of the terms listed below occur during interphase except

Accepted Answer

A) G1 phase. 
B) cytokinesis. 
C) chromosome replication. 
D) G2 phase. 
E) S phase. 
A) G1 phase. 
B) cytokinesis. 
C) chromosome replication. 
D) G2 phase. 
E) S phase.

Question 11

After the DNA is replicated, and it condenses in prophase, two identical rods of DNA are seen. These are

Accepted Answer

A) chromatids. 
B) centromeres. 
C) spindle fibers. 
D) kinetochores. 
E) chromatin. 
A) chromatids. 
B) centromeres. 
C) spindle fibers. 
D) kinetochores. 
E) chromatin.

Question 12

Match between columns
                        Premises: Sister chromatids start to pull apart.
Chromosomes align at the center of the cell.
The cell splits into two daughter cells.

Accepted Answer

The Answer of metaphase and telophase and anaphase and prophase is...

Question 13

In what phases is the genetic material in the cell correctly referred to as chromatids?

Accepted Answer

A) interphase and telophase 
B) metaphase and prophase 
C) anaphase and metaphase 
D) metaphase and telophase 
E) interphase and prophase 
A) interphase and telophase 
B) metaphase and prophase 
C) anaphase and metaphase 
D) metaphase and telophase 
E) interphase and prophase

Question 14

Microtubules are

Accepted Answer

A) affected by cancer-fighting chemicals such as Taxol. 
B) responsible for formation of the contractile ring. 
C) involved in cell plate formation. 
D) only built up to make longer and longer microtubules. 
E) important during interphase of the cell cycle. 
A) affected by cancer-fighting chemicals such as Taxol. 
B) responsible for formation of the contractile ring. 
C) involved in cell plate formation. 
D) only built up to make longer and longer microtubules. 
E) important during interphase of the cell cycle.

Question 15

List the two major differences between meiosis and mitosis. What is the significance of these events?

Accepted Answer

In meiosis, crossing over and

Question 16

Describe the difficulty in distinguishing a cell in the late stages of prophase and the early stages of metaphase.

Accepted Answer

The phases of the cell cycle are just th

Question 17

Spindle fibers

Accepted Answer

A) are composed of DNA. 
B) only appear during interphase. 
C) attach to the ends of chromosomes. 
D) connect chromosomes to the center of the cell. 
E) are used to organize and move chromosomes during mitosis. 
A) are composed of DNA. 
B) only appear during interphase. 
C) attach to the ends of chromosomes. 
D) connect chromosomes to the center of the cell. 
E) are used to organize and move chromosomes during mitosis.

Question 18

Explain how sexual reproduction leads to genetic variation. What is the evolutionary significance of this variation?

Accepted Answer

The best responses will include discussi

Question 19

Match between columns
                        Premises: Chromosomes align at the center of the cell.
Sister chromatids start to pull apart.
The cell splits into two daughter cells.

Accepted Answer

The Answer of metaphase and telophase and prophase and cytokinesis is...

Question 20

A protein's structure often plays an important role in its function. Describe how the shapes of the sonic hedgehog protein and the cell surface protein coded for by the patched gene work together to control normal cell division. How is this altered in a person with Basal Cell Nevus Syndrome or in a person that has been exposed to too much UV radiation?

Accepted Answer

In a normal person, the patched gene cod

Exam 4: The Cell Cycle

At the end of metaphase I, separate.

What structure holds the sister chromatids to the spindle fibers?

At the end of meiosis I, the resulting two cells are

Match the following examples with mitosis, meiosis, or both 1. __ occurs insomatic cells 2. __ guestis to gametes 3. __ generally produces 4 daughter cells 4. __ required chromosome replication, must be complete beforehand 5. __ produces genetically identical daughter cells

Cytokinesis in plant cells differs from cytokinesis in animal cells because

Pairs of chromosomes that are similar in size and genetic composition are

Explain why there is a difference in the mechanism by which an animal cell and a plant cell accomplishes cytokinesis.

Skin cancers typically develop in the

All of the terms listed below occur during interphase except

After the DNA is replicated, and it condenses in prophase, two identical rods of DNA are seen. These are

In what phases is the genetic material in the cell correctly referred to as chromatids?

Microtubules are

List the two major differences between meiosis and mitosis. What is the significance of these events?

Describe the difficulty in distinguishing a cell in the late stages of prophase and the early stages of metaphase.

Spindle fibers

Explain how sexual reproduction leads to genetic variation. What is the evolutionary significance of this variation?

What Is Life

Cells and the Chemistry of Life

How Cells Take in and Use Energy

Patterns of Inheritance

DNA: The Thread of Life

Genes, Proteins, and Genetic Engineering

Reproduction and Development

The Mechanisms of Evolution

Lifes Origins and Biodiversity

Single-Celled Life

Fungi and Plants: Decomposers and Producers

The Evolution and Diversity of Animals

Ecology of Populations and Communities

Ecosystems and the Biosphere

Body Function, Survival, and the Steady State

Circulation and Respiration

Defense Against Disease

Animal Nutrition and Digestion

Hormones: Messengers of Change

The Nervous System

The Body in Motion

Plant Architecture and Function

Plant Growth, Hormones, and Engineering

The Dynamic Plant

Filters

Match the following examples with mitosis, meiosis, or both 1. occurs insomatic cells 2. guestis to gametes 3. generally produces 4 daughter cells 4. required chromosome replication, must be complete beforehand 5. __ produces genetically identical daughter cells