'; answerText[16] = '

'; numberText[17] = '18.'; questionText[17] = '

a.	nucleosomes.	c.	histones.
b.	chromatids.	d.	chromatin.

'; answerText[17] = '

'; numberText[18] = '19.'; questionText[18] = '

a.	mitosis.	c.	meiosis II.
b.	meiosis I.	d.	fertilization.

'; answerText[18] = '

'; numberText[19] = '20.'; questionText[19] = '

a.	dividing squares : circles	c.	stacking pennies : disorder
b.	card shuffling : new combinations	d.	measuring lines : lack of exactness

'; answerText[19] = '

'; numberText[20] = '21.'; questionText[20] = '

a.	mitosis only	c.	both mitosis and ' + 'meiosis
b.	meiosis only	d.	neither mitosis nor meiosis

'; answerText[20] = '

'; numberText[21] = '22.'; questionText[21] = '

a.	mitosis and interphase.
b.	synthesis and cytokinesis.
c.	the M phase and the S phase.
d.	cytokinesis and mitosis.

'; answerText[21] = '

'; numberText[22] = '23.'; questionText[22] = '

a.	monoploid zygote	c.	monoploid sperm
b.	diploid zygote	d.	diploid ovum

'; answerText[22] = '

'; numberText[23] = '24.'; questionText[23] = '

a.	mitosis only	c.	both mitosis and ' + 'meiosis
b.	meiosis only	d.	neither mitosis nor meiosis

'; answerText[23] = '

'; numberText[24] = '25.'; questionText[24] = '

a.	breaking apart into separate genes.
b.	extending to form very long, thin molecules.
c.	wrapping tightly around associated proteins.
d.	being enzymatically changed into a protein.

'; answerText[24] = '

'; numberText[25] = '26.'; questionText[25] = '

a.	nucleus	c.	Golgi bodies
b.	ribosomes	d.	chloroplasts

'; answerText[25] = '

'; numberText[26] = '27.'; questionText[26] = '

a.	centriole.	c.	aster.
b.	spindle.	d.	nucleosome.

'; answerText[26] = '

'; numberText[27] = '28.'; questionText[27] = '

a.	mitosis : C	c.	cytokinesis : ' + 'M
b.	mitosis : meiosis	d.	DNA copying : S

'; answerText[27] = '

'; numberText[28] = '29.'; questionText[28] = '

a.	mitosis only	c.	both mitosis and ' + 'meiosis
b.	meiosis only	d.	neither mitosis nor meiosis

'; answerText[28] = '

'; numberText[29] = '30.'; questionText[29] = '

a.	replicate their DNA	c.	exchange their genes
b.	double their length	d.	uncoil their proteins

'; answerText[29] = '

'; numberText[30] = '31.'; questionText[30] = '

a.	92 chromosomes.	c.	23 chromosomes.
b.	46 chromosomes.	d.	64 chromosomes.

'; answerText[30] = '

'; numberText[31] = '32.'; questionText[31] = '

a.	centrioles.
b.	centromeres.
c.	a cell plate.
d.	chromatin.

'; answerText[31] = '

'; numberText[32] = '33.'; questionText[32] = '

a.	only during interphase
b.	only when they are being replicated
c.	only during cell division
d.	only during the G1 phase

'; answerText[32] = '

'; numberText[33] = '34.'; questionText[33] = '

a.	Interphase is usually the longest phase.
b.	DNA replicates during the S phase.
c.	Cell division ends with cytokinesis.
d.	The cell grows only occurs during the G2 ' + 'phase.

'; answerText[33] = '

'; numberText[34] = '35.'; questionText[34] = '

a.	female : gametes	c.	male : YY
b.	female : eggs	d.	male : XY

'; answerText[34] = '

'; numberText[35] = '36.'; questionText[35] = '

a.	asters	c.	nucleoli
b.	microtubules	d.	chromosomes

'; answerText[35] = '

'; numberText[36] = '37.'; questionText[36] = '

a.	molecular structure of a chromosome.
b.	genes that are present in a particular strand of ' + 'DNA.
c.	medical history of ' + 'an individual.
d.	chromosomes present ' + 'in a somatic cell.

'; answerText[36] = '

'; numberText[37] = '38.'; questionText[37] = '

a.	It helps separate the chromosomes.
b.	It breaks down the nuclear membrane.
c.	It duplicates the DNA.
d.	It divides the cell in half.

'; answerText[37] = '

'; numberText[38] = '39.'; questionText[38] = '

a.	chromosomes gain electrons and hydrogen ' + 'atoms.
b.	gametes are much ' + 'smaller than the cells from which they are produced.
c.	the number of cells is reduced from four to ' + 'two.
d.	diploid cells ' + 'divide to become haploid cells.

'; answerText[38] = '

'; numberText[39] = '40.'; questionText[39] = '

a.	cell division.
b.	metaphase.
c.	interphase.
d.	mitosis.

'; answerText[39] = '

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Name:  Cell Reproduction

 

True/False Indicate whether the sentence or statement is true or false.
TF	1.	DNA replicates during interphase
TF	2.	Chromatids separate from each other during telophase.
TF	3.	Four sperm are produced from each cell undergoing meiosis in a male.
TF	4.	Chromatin appears as tightly coiled, rod-shaped structures in the cell nucleus.
TF	5.	Each homologue of a chromosome pair has a different size and shape.
TF	6.	Meiosis produces diploid cells.
TF	7.	Sperm and egg cells contain only one member of each homologous pair of chromosomes
TF	8.	The information needed by a cell to direct its activities and to determine its characteristics is contained in molecules of deoxyribonucleic acid (DNA).
TF	9.	Meiosis is identical to mitosis except for the kind of cells in which it occurs
TF	10.	Variation promotes a better chance for survival should change in the environment occur.
Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.
ABCD	11.	During anaphase I of meiosis a. one chromatid of each chromosome is pulled to each pole b. one pair of chromatids of each tetrad is pulled to each pole c. a tetrad is pulled to each pole d. centromeres are split
ABCD	12.	This process results in the production of diploid cells. a. mitosis c. spermatogenesis b. meiosis d. oogenesis
ABCD	13.	Which does not occur during mitosis in an animal cell? a. Asters form during metaphase. c. Centrioles separate during prophase. b. Sister chromatids split during telophase. d. Telophase overlaps cytokinesis.
ABCD	14.	A certain cell contains the following chromosomes F and F*; G and G*; the possible combinations of these chromosomes in the gametes of this organism are a. FF*, F*F*,FF*,F*F* c. FG,GG,FF*,G*G b. FF,FF*,GG*,F*G* d. FG,FG*,F*G,F*G*
ABCD	15.	During cell division, the cytoplasm divides to become two new cells during a. synthesis. c. telophase. b. anaphase. d. cytokinesis.
ABCD	16.	Each pair of chromatids is attached at an area called the a. chromatid. c. chromatin. b. centromere. d. cytokinesis.
ABCD	17.	Which cells in the normal human body rarely undergo cell division? a. skin c. digestive tract b. bones d. nerves
ABCD	18.	The DNA of chromosomes is coiled around special proteins called a. nucleosomes. c. histones. b. chromatids. d. chromatin.
ABCD	19.	Separation of homologues occurs during a. mitosis. c. meiosis II. b. meiosis I. d. fertilization.
ABCD	20.	crossing over : genetic variation:: a. dividing squares : circles c. stacking pennies : disorder b. card shuffling : new combinations d. measuring lines : lack of exactness
ABCD	21.	Two nuclei are produced during a. mitosis only c. both mitosis and meiosis b. meiosis only d. neither mitosis nor meiosis
ABCD	22.	The two main stages of cell division are called a. mitosis and interphase. b. synthesis and cytokinesis. c. the M phase and the S phase. d. cytokinesis and mitosis.
ABCD	23.	Fertilization produces a a. monoploid zygote c. monoploid sperm b. diploid zygote d. diploid ovum
ABCD	24.	What is responsible for growth by increasing cell number? a. mitosis only c. both mitosis and meiosis b. meiosis only d. neither mitosis nor meiosis
ABCD	25.	In order to fit within a cell, DNA becomes more compact by a. breaking apart into separate genes. b. extending to form very long, thin molecules. c. wrapping tightly around associated proteins. d. being enzymatically changed into a protein.
ABCD	26.	The genetic information in a cell is contained in the a. nucleus c. Golgi bodies b. ribosomes d. chloroplasts
ABCD	27.	The thread-like structure that helps move the chromosomes apart during mitosis is called the a. centriole. c. aster. b. spindle. d. nucleosome.
ABCD	28.	growth : G :: a. mitosis : C c. cytokinesis : M b. mitosis : meiosis d. DNA copying : S
ABCD	29.	Human cells with 26 chromosomes are produced during a. mitosis only c. both mitosis and meiosis b. meiosis only d. neither mitosis nor meiosis
ABCD	30.	During crossing-over, portions of the chromatids a. replicate their DNA c. exchange their genes b. double their length d. uncoil their proteins
ABCD	31.	As a result of mitosis in a human body cell, the nucleus of each daughter cell contains a. 92 chromosomes. c. 23 chromosomes. b. 46 chromosomes. d. 64 chromosomes.
ABCD	32.	One difference between cell division in plant cells and in animal cells is that plant cells have a. centrioles. b. centromeres. c. a cell plate. d. chromatin.
ABCD	33.	When during the cell cycle are chromosomes visible? a. only during interphase b. only when they are being replicated c. only during cell division d. only during the G1 phase
ABCD	34.	Which of the following is NOT a correct statement about the events of the cell cycle? a. Interphase is usually the longest phase. b. DNA replicates during the S phase. c. Cell division ends with cytokinesis. d. The cell grows only occurs during the G2 phase.
ABCD	35.	female : XX:: a. female : gametes c. male : YY b. female : eggs d. male : XY
ABCD	36.	In cell division, chromatin material becomes a. asters c. nucleoli b. microtubules d. chromosomes
ABCD	37.	A student can study a karyotype to learn about the a. molecular structure of a chromosome. b. genes that are present in a particular strand of DNA. c. medical history of an individual. d. chromosomes present in a somatic cell.
ABCD	38.	What is the role of the spindle during mitosis? a. It helps separate the chromosomes. b. It breaks down the nuclear membrane. c. It duplicates the DNA. d. It divides the cell in half.
ABCD	39.	Meiosis I is often called “reduction division” because a. chromosomes gain electrons and hydrogen atoms. b. gametes are much smaller than the cells from which they are produced. c. the number of cells is reduced from four to two. d. diploid cells divide to become haploid cells.
ABCD	40.	The process by which a cell divides into two daughter cells is called a. cell division. b. metaphase. c. interphase. d. mitosis.