chapter 3 Testbank

Question 1

In which stage of mitosis do these events happen: chromatids separate to become separate chromosomes, which are pulled to each centrosome.

Select one:

a. prophase
b. metaphase
c. anaphase
d. telophase
e. Interphase

Answer 1

c. anaphase

Question 2

In animals, somatic cells are ________ and germ cells are ________.

Select one:
A. diploid ; diploid
B. diploid ; haploid
C. haploid ; haploid
D. haploid ; diploid

Answer 2

B. diploid ; haploid

Question 3

Which of the following is NOT a characteristic of a typical somatic cell?

Select one:

a. it has a diploid chromosome number
b. it has two sets of chromosomes
c. it is involved in asexual reproduction
d. its DNA is not passed on to offspring
e. it divides by meiosis

Answer 3

e. it divides by meiosis

Question 4

At which stage(s) in cell division do tetrads align down the center of the cell?

Select one:

a. Metaphase of Meiosis II only
b. Metaphase of Mitosis and Meiosis I
c. Metaphase of Mitosis and Meiosis II
d. Metaphase of mitosis only
e. Metaphase of meiosis I only

Answer 4

e. Metaphase of meiosis I only

Question 5

Binary fission…

Select one:

a. is a form of asexual reproduction
b. is a way for bacteria to reproduce
c. begins with a single mother/parent cell and produces two genetically identical daughter cells.
d. If all of the responses for this question are TRUE, then choose this response.

Answer 5

d. If all of the responses for this question are TRUE, then choose this response.

Question 6

Which statement is TRUE about the chromosomes illustrated below? Choose all that apply.

Select one or more:

a. Chromosome A is a replicated chromosome.
b. Chromosome A is a chromatid.
c. Chromosome B is a homologous chromosome pair.
d. Chromosome B is composed of two chromatids.
e. Chromosome B as gone though anaphase of mitosis.

Answer 6

d. Chromosome B is composed of two chromatids.

Question 7

At which stage of cell division does crossing over most commonly occur?

Select one:

a. Prophase of Meiosis II only
b. Prophase of Mitosis and Meiosis II
c. Prophase of meiosis I only
d. Prophase of mitosis only
e. Prophase of Mitosis and Meiosis I

Answer 7

c. Prophase of meiosis I only

Question 8

Which cell type is the immediate product of Meiosis II?

Select one:

a. mature sperm
b. spermatid
c. secondary spermatocyte
d. primary spermatocyte

Answer 8

b. spermatid

Question 9

During sexual reproduction, each parent contributes one set of chromosomes. Members of a pair of chromosomes (one from each parent) are called ________.

Select one:
A. sister chromatids
B. sex chromosomes
C. karyotypes
D. homologs

Answer 9

D. homologs

Question 10

Which of the following indicates the correct order of these events?
Select one:
A. Metaphase - Prometaphase - Prophase - Anaphase - Telophase
B. Telophase - Prometaphase - Prophase - Metaphase - Anaphase
C. Anaphase - Telophase - Prophase - Prometaphase - Metaphase
D. Prophase - Prometaphase - Metaphase - Anaphase - Telophase

Answer 10

D. Prophase - Prometaphase - Metaphase - Anaphase - Telophase

Question 11

A diploid organism that you are studying has 17 chromosomes. How many total chromosomes are found in a somatic cell from this organism? A sperm cell? An egg cell?

Select one:
A. 17; 16; 16
B. 34; 17; 17
C. 34; 17; 34
D. 17; 17; 17

Answer 11

B. 34; 17; 17

Question 12

Which of the following is a TRUE statement about the image below of a cell progressing through cell division. NOTE: you have not seen this image before. Use your analytical skills to interpret what you see.

Select one:

a. This image is likely diagramming cell division in a eukaryotic cell.
b. This image is likely diagramming mitosis.
c. This image is likely diagramming binary fission.
d. This image is likely diagramming DNA packaging in a prokaryotic cell.

Answer 12

c. This image is likely diagramming binary fission.

Question 13

Which statement is TRUE about the differences between a typical round of mitosis and meiosis?

Select one:

a. Mitosis and meiosis both involve the separation of homologous chromosome pairs into separate daughter cells.
b. Mitosis and meiosis both produce daughter cells with a diploid chromosome number.
c. Mitosis and meiosis both involve the separation of sister chromotids into separate daughter cells.
d. Mitosis and meiosis both produce daughter cells that are genetically identical to each other.
e. Mitosis and meiosis both produce daughter cells with a haploid chromosome number.

Answer 13

c. Mitosis and meiosis both involve the separation of sister chromotids into separate daughter cells.

Question 14

Which of the following terms applies to this karyotype? Choose all that apply.

Select one or more:

a. This karyotype has a 1N of 11.
b. This frog has 22 homologous chromosome pairs.
c. This frog has a haploid chromosome number of 22.
d. This frog has a diploid number of 22.
e. This karyotype comes from a eukaryotic cell.

Answer 14

d. This frog has a diploid number of 22.
e. This karyotype comes from a eukaryotic cell.
a. This karyotype has a 1N of 11.

Question 15

In which stage of mitosis do these events happen: nuclear membrane dissolves, nucleolus dissolves and the chromosomes become fully condensed?

Select one:

a. telophase
b. anaphase
c. metaphase
d. Interphase
e. prophase

Answer 15

e. prophase

Question 16

Which cell type is the immediate product of reductional division?

Select one:

a. primary spermatocyte
b. secondary spermatocyte
c. mature sperm
d. spermatid

Answer 16

b. secondary spermatocyte

Question 17

During this phase of the cell cycle chromosomes start to condense:

Select one:
A. Prophase
B. Metaphase
C. Prometaphase
D. Telophase
E. Anaphase

Answer 17

A. Prophase

Question 18

Organelles are ________.

Select one:
A. the outer, rigid covering of a prokaryotic cell.
B. membrane-bound compartments of eukaryotic cells.
C. the region that contains the DNA in prokaryotic cells.
D. structures that contain the genetic material.

Answer 18

B. membrane-bound compartments of eukaryotic cells.

Question 19

Which of the following terms applies to this definition: a set of one maternal and one paternal chromosomes that pair up with each other inside a cell during meiosis.

Select one:

a. homologous chromosomes
b. tetrads
c. genome
d. metaphase chromosomes
e. nucleosomes

Answer 19

a. homologous chromosomes

Question 20

The end result of meiosis in animals is ________.

Select one:
A. four diploid cells
B. four haploid cells
C. two diploid cells
D. two haploid cells
E. None of the answers are correct

Answer 20

B. four haploid cells

Question 21

The process of crossing over occurs during which phase of meiosis?

Select one:
A. Diplotene 
B. Pachytene
C. Diakinesis
D. Zygotene
E. Leptotene

Answer 21

B. Pachytene

Question 22

At which stage(s) in cell division do homologous chromosome pairs form tetrads?

Select one:

a. Prophase of mitosis only
b. Prophase of Meiosis II only
c. Prophase of Mitosis and Meiosis I
d. Prophase of meiosis I only
e. Prophase of Mitosis and Meiosis II

Answer 22

d. Prophase of meiosis I only

Question 23

During this phase of the cell cycle the chromosomes line up in the center of the cell:

Select one:
A. Anaphase
B. Telophase
C. Metaphase
D. Prophase
E. Prometaphase

Answer 23

C. Metaphase

Question 24

If a somatic cell has 4 chromosomes in Interphase, then which of the following statements are TRUE. Choose all that apply.

Select one or more:

a. a daughter cell has chromosomes composed of two chromatids after meiosis II.
b. a daughter cell has 2 homologous chromosome pairs after meiosis I.
c. a daughter cell has unreplicated chromosomes after meiosis I.
d. a daughter cell has 2 chromosomes after meiosis I and meiosis II.
e. a daughter cell has 2 homologous chromosome pairs after mitosis.
f. a daughter cell has a diploid number of chromosomes after mitosis, but a haploid number after meiosis I and II.
g. it has 2 homologous chromosome pairs prior to mitosis and meiosis.

Answer 24

f. a daughter cell has a diploid number of chromosomes after mitosis, but a haploid number after meiosis I and II.
g. it has 2 homologous chromosome pairs prior to mitosis and meiosis.
e. a daughter cell has 2 homologous chromosome pairs after mitosis.

a daughter cell has 2 chromosomes after meiosis I and meiosis II.

Question 25

In which stage of mitosis do these events happen: chromosomes align down the center of the cell by the action of spindle fibers. Select one: a. prophase b. metaphase c. telophase d. anaphase e. Interphase

Answer 25

b. metaphase

Question 26

You are studying a diploid organism that has 14 sets of chromosomes. How many chromatids would this cell have in G2 phase? ``` Select one: A. 14 B. 56 C. 28 D. 7 ```

Answer 26

B. 56

Question 27

The process where two gametes fuse with each other in the process of fertilization to begin the life of a new organism is called ``` Select one: A. X-linked inheritance. B. multicellularity. C. sexual reproduction. D. asexual reproduction. E. gametogenesis. ```

Answer 27

C. sexual reproduction.

Question 28

Oogenesis is a gametogenic process following ________ that produces ________. ``` Select one: A. mitosis ; egg cells B. meiosis ; egg cells C. meiosis ; sperm cells D. mitosis ; sperm cells E. binary fission ; sperm cells ```

Answer 28

B. meiosis ; egg cells

Question 29

During this phase of the cell cycle the nuclear membrane starts to disassociate: ``` Select one: A. Prometaphase B. Telophase C. Anaphase D. Prophase E. Metaphase ```

Answer 29

D. Prophase

Question 30

In which stage of mitosis do these events happen: nuclear membrane reforms and the chromosomes and cell return to the Interphase state. Select one: a. anaphase b. prophase c. metaphase d. telophase

Answer 30

d. telophase

Question 31

True statement: A human somatic cell has 46 chromosomes. Is this statement TRUE or FALSE: In humans, the first polar body produced by oogenesis has 23 chromosomes. Select one: True False

Answer 31

True

Question 32

During this phase of the cell cycle the separated sister chromatids are considered independent chromosomes: ``` Select one: A. Anaphase B. Metaphase C. Telophase D. Prometaphase E. Prophase ```

Answer 32

A. Anaphase

Question 33

Cell division in prokaryotic cells is called ________, while in eukaryotic cells it is called ________. ``` Select one: A. mitosis ; binary fission B. meiosis ; mitosis C. binary fission ; binary fission D. binary fission ; mitosis ```

Answer 33

D. binary fission ; mitosis

Question 34

You are studying a diploid organism that has 14 sets of chromosomes. How many chromatids will a cell from this organism have in metaphase of meiosis II? ``` Select one: A. 14 B. 28 C. 56 D. 7 ```

Answer 34

B. 28

Question 35

Which divisional stage(s) is(are) called reductional division? Select one: a. Meiosis I and Mitosis b. Mitosis only c. Meiosis I only d. Mitosis and Meiosis II e. Meiosis I and Meiosis II

Answer 35

c. Meiosis I only

Question 36

You are studying a diploid organism that has 14 sets of chromosomes. How many chromosomes will a gamete from this organism have? ``` Select one: A. 28 B. 14 C. 56 D. 7 ```

Answer 36

B. 14

Question 37

Which of the following statements is FALSE given a somatic cell with a diploid number 2N=20 that proceeds through mitosis or meiosis. The image is provided to help you answer this question, but notice that it does not have a 2N=20. Select one: a. 20 chromosomes will line up along the metaphase plate in meiosis II. b. 20 replicated chromosomes will line up along the metaphase plate during mitosis. c. 20 chromatids will line up along the metaphase plate in meiosis II. d. 10 tetrads will line up along the metaphase plate in meiosis 1.

Answer 37

a. 20 chromosomes will line up along the metaphase plate in meiosis II.

Question 38

A karyotype is a(n) ________. Select one: A. stage of prophase I in meiosis. B. organized representation of the chromosomes within a cell. C. division of the cytoplasmic material following mitosis. D. organelle of eukaryotic cells. E. None of the answers are correct

Answer 38

B. organized representation of the chromosomes within a cell.

Question 39

During this phase of the cell cycle, the sister chromatids are formed: ``` Select one: A. G1 phase B. S phase C. Cytokinesis D. Prophase E. G2 phase ```

Answer 39

B. S phase

Question 40

During this phase of the cell cycle sister chromatids separate and head towards opposite poles of the cell: ``` Select one: A. Metaphase B. Prophase C. Anaphase D. Telophase E. Prometaphase ```

Answer 40

C. Anaphase