Mader's Concepts in Biology, First Edition

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Sylvia S. Mader

Chapter 8

Question 1

Cancer can best be described as:

A. foreign cells attacking an organ

B. uncontrolled cell division

C. cells from one organ invading another

D. cells which divide too slowly

E. cells which can no longer divide

Question 2

Which of the following statements is untrue of cancer?

A. cancer cells lose the specialization

B. cancer cells interfere with the normal action of other cells

C. cancer cells remain where they are formed

D. cancer is a genetic disorder

E. cancer cells divide uncontrollably

Question 3

Body cells are also known as germ cells.

A. true

B. false

Question 4

A scientist is studying reproduction in prokaryotes. Which type of reproduction would he or she be most likely be studying?

A. somatic reproduction

B. germ reproduction

C. sexual reproduction

D. gamete reproduction

E. asexual reproduction

Question 5

Sperm and egg are made from specialized cells called:

A. germ cells

B. asexual cells

C. somatic cells

D. binary cells

E. nucleoid cells

Question 6

Which of the following is not a reason why cell division is important in eukaryotes?

A. to repair damaged tissueB. to replace old cellsC. to make extra copies of DNA to store for

later useD. to make new cells as the organism growsE. to make new immune cells when the

organism is sick

Question 7

A biologist is studying reproduction in bacteria. Which of the following terms best describes what he or she is studying?

A. germ fission

B. nucleoid fission

C. somatic fission

D. binary fission

E. gamete fission

Question 8

The greatest amount of day-to-day variation is produced by the process(es) of:

A. mitosis

B. meiosis

C. crossing-over

D. mutations and the regular cell cycle

E. meiosis and crossing over

Question 9

Crossing-over occurs during which of the following phases?

A. metaphase I

B. metaphase II

C. prophase I

D. prophase II

E. anaphase I

Question 10

The fusion of sperm and egg is called synapsis.

A. true

B. false

Question 11

During which stage do homologous chromosomes move away from each other?

A. prophase

B. anaphase I

C. anaphase II

D. metaphase I

E. metaphase II

Question 12

The second meiotic division is essentially a mitotic division except for the fact that the cells produced are:

A. haploid

B. diploid

C. polyploidy

D. autosomal

E. somatic

Question 13

Gametes and spores:

A. are both produced by animals

B. are autosomal

C. are haploid

D. are diploid

E. join in fertilization

Question 14

In the cell cycle the "S" stands for:

A. somatic

B. sexual

C. synthesis

D. sister

E. synapsis

Question 15

A biologist is studying the relaxed form of a chromosome. He or she would be studying which of the following?

A. chromatin

B. chromatids

C. centromeres

D. centrosomes

E. cytokinesis

Question 16

If the total number of chromosomes is six, then after mitosis there will be:

A. two chromosomes in each daughter cell, one from each parent

B. three chromosomes in each cellC. 12 chromosomes in each cellD. six chromosomes in each daughter cellE. three chromosomes in one daughter cell

and six chromosomes in the other cell

Question 17

Which is not a correct association?

A. cytokinesis-division of the cytoplasm

B. centromere-point at which sister chromatids remain attached

C. somatic-cells of the body not involved in gamete production and undergo mitosis

D. sister chromatids-two identical chromosome arms still attached at the centromere

E. mitosis-when a cell duplicates and then divides twice to half the chromosome number

Question 18

Which of the following is not the correct association?

A. somatic cells-diploid

B. somatic cells-haploid

C. one parent cell-two daughter cells

D. gamete cells-haploid

E. body cells-diploid

Question 19

If an organism has 50 chromosomes in its somatic cells, which of the following would be haploid?

A. 50 chromosomes

B. 50 pairs of chromosomes

C. 25 chromosomes

D. 25 pairs of chromosomes

E. 100 chromosomes

Question 20

During _______________, the nuclear envelope disappears, and the chromosomes become distinct.

A. interphase

B. prophase

C. metaphase

D. anaphase

E. telophase