Mitosis Verified Test Bank Chapter.8

Essentials of The Living World, 6e (Johnson)

Chapter 8 Mitosis

1) Prokaryotic cells divide by

A) mitosis.

B) cleavage.

C) cytokinesis.

D) binary fission.

E) meiosis.

2) In the eukaryotic cell cycle, in which phase is DNA synthesized?

A) G1

B) G2

C) S

D) M

E) C

3) The G1, S, and G2 phases of the eukaryotic cell cycle are collectively known as

A) interphase.

B) prophase.

C) mitosis.

D) meiosis.

E) metaphase.

4) The DNA helix, of eukaryotic cells, is wrapped around proteins with positive charges called

A) chromatids.

B) histones.

C) centromeres.

D) kinetochores.

E) centrioles.

5) Two identical copies of homologous chromosomes are called ________ and are joined at the ________.

A) homologues; centromere

B) sister chromatids; kinetochore

C) sister chromatids; centromere

D) homologues; kinetochore

E) sister chromatids; histones

6) The correct sequence, beginning to end, for the stages of mitosis is

A) prophase → metaphase → anaphase → telophase.

B) metaphase → prophase → anaphase → telophase.

C) prophase → anaphase → metaphase → telophase.

D) telophase → metaphase → anaphase → prophase.

E) anaphase → metaphase → prophase → telophase.

7) Which pair, of cell cycle event with its phase, is incorrectly matched?

A) cell growth : G1

B) spindle formation : S

C) mitosis : M

D) preparation of cell division : G2

E) cytoplasm division : C

8) What causes cancer in cells?

A) damage to genes controlling cell division

B) chemical damage to cell membranes

C) UV damage to transport proteins

D) disconnect between the two G phases

E) skipping the S phase in the cell cycle

9) A cell devoid of tumor-suppressor genes would lose the ability to

A) mutate the cell.

B) stimulate cell division.

C) restrict cell division.

D) promote metastases.

E) All of the answer choices are correct.

10) In biology lab, you are asked to construct a representation of the number of human chromosomes. How many chromosomes would you need to construct?

A) 76

B) 24

C) 23

D) 46

E) 92

11) During which phase of mitosis do replicated chromosomes condense and the nuclear envelope disappears?

A) interphase

B) prophase

C) telophase

D) metaphase

E) anaphase

12) You look in the microscope and see sister chromatids moving to opposite sides of the cell. You conclude the cell is in

A) anaphase.

B) metaphase.

C) prophase.

D) telophase.

E) interphase.

13) You have designed a new drug which halts cell division. Studies on its effects show the cells halt after chromosomes lined up on the equatorial plane. Thus, your drug most likely blocks cells from moving out of

A) anaphase.

B) metaphase.

C) prophase.

D) telophase.

E) interphase.

14) During which mitotic phase is the spindle disassembled, the nuclear membrane re-formed, and the chromosomes uncoiled?

A) anaphase

B) metaphase

C) prophase

D) telophase

E) interphase

15) In which cell type would a cell plate form after telophase is complete?

A) animal

B) bacteria

C) plant

D) protist

E) All of the answer choices are correct.

16) During which phase of the cell cycle does the division of the cytoplasm occur and two daughter cells are formed?

A) metaphase

B) prophase

C) cytokinesis

D) S phase

E) G1

17) Proto-oncogenes encode proteins that

A) stimulate cell division.

B) suppress tumors.

C) restrict cell division.

D) control programmed cell death.

E) stops the cell from leaving its G1 phase.

18) In prokaryotes, DNA replication begins at a site called the

A) cleavage furrow.

B) origin of replication.

C) cell plate.

D) binary fission.

E) replication bubble.

19) In a condensed chromosome of 200 nucleotides, DNA and eight histone proteins are coiled into a complex called a

A) nucleosome.

B) kinetochore.

C) centromere.

D) karyotype.

E) centriole.

20) Chromosomes are composed of ________, a complex of DNA and proteins.

A) spindles

B) centrioles

C) chromatin

D) cytochrome

E) cytokinesis

21) Which of the following phases of the eukaryotic cell cycle occurs outside of mitosis?

A) interphase

B) prophase

C) anaphase

D) metaphase

E) telophase

22) During metaphase

A) chromosomes condense.

B) chromatids separate.

C) the nuclear membrane reforms.

D) the nucleolus reappears.

E) chromosomes line up on the equatorial plane.

23) Which of the following events in cell division happens outside of telophase?

A) replication of the chromosomes

B) reappearance of the nucleolus

C) uncoiling of the chromosomes

D) disassembly of the spindle

E) formation of the nuclear envelope

24) During which phase of the cell cycle does the synthesis of microtubules occur?

A) S phase

B) G2

C) G1

D) telophase

E) anaphase

25) Which of the following statements is false concerning cancer?

A) Malignant tumors are invasive.

B) Malignant tumors produce metastases.

C) Cancer cells can sometimes spread into the bloodstream.

D) Oncogenes are inactive in cancer cells.

E) Certain viruses can cause types of cancers.

26) The cell division cycle is regulated by proteins called growth factors.

27) Most cases of lung cancer are related to factors other than cigarette smoke.

28) Mitosis occurs in germ-line cells.

29) Growth factor genes, known as ________, encode proteins that stimulate cell division.

30) Mutated proto-oncogenes become cancer-causing genes called ________.

31) Pairs of chromosomes, one from the mother and one from the father, that have the same size, shape, and function are ________ chromosomes.

32) During mitosis, chromosomes are lined up at the equator of the cell during the phase called ________.

33) The cytoplasm is cleaved into two parts during the ________ phase of the cell's life cycle.

34) Sister chromatids are separated and pulled to opposite poles during the part of mitosis known as ________.

35) Mitosis results in the production of two ________ daughter cells, cells that have two of each type of chromosome.

36) Describe what occurs during prophase of mitosis.

37) How are cancer cells different from normal cells?

38) Which of the following statements pertains to both prokaryotic and eukaryotic cell division?

A) Both result in two identical daughter cells.

B) Both require interphase.

C) Both use binary fission as the overall process.

D) Both use mitosis for as the overall process.

E) Both use the origin of replication to begin the DNA replication process.

39) The arrangement of chromosomes, paired with their homologues, can be studied through an organized display called a ________.