Cell ReproductionPart 2

26. Which of the following is not monitored in G2 phase?

Cell size Cell size

Alignment on the metaphase plateAlignment on the metaphase plate

Cellular environment Cellular environment

DNA replication DNA replication

INCORRECT!!!

Try Again

CORRECT

Next Question

27. Deactivation of M-phase-promoting factor signals entry into which of the

following mitotic phases?

Prophase Prophase

AnaphaseAnaphase

Metaphase Metaphase

Prometaphase Prometaphase

INCORRECT!!!

Try Again

CORRECT

Next Question

28. A cell with a diploid number of 20 has which of the following haploid

numbers?

80 80

10 10

40 40

2 2

INCORRECT!!!

Try Again

CORRECT

Next Question

29. During which of the following cell cycle phases does DNA replication

take place?

M phase M phase

S phaseS phase

G1 G1

G2 G2

INCORRECT!!!

Try Again

CORRECT

Next Question

30. During which sub-phase of mitotic anaphase do centrosomes separate?

Anaphase D Anaphase D

Anaphase BAnaphase B

Anaphase C Anaphase C

Anaphase A Anaphase A

INCORRECT!!!

Try Again

CORRECT

Next Question

31. A somatic cell has a haploid number of 10. What is its diploid number after DNA replication?

80 80

4040

20 20

10 10

INCORRECT!!!

Try Again

CORRECT

Next Question

32. Which of the following is not a stage of mitotic interphase?

G1 G1

M phaseM phase

S phase S phase

G2 G2

INCORRECT!!!

Try Again

CORRECT

Next Question

33. During which sub-phase of mitotic anaphase do chromosomes

separate?

Anaphase B Anaphase B

Anaphase AAnaphase A

Anaphase C Anaphase C

Anaphase D Anaphase D

INCORRECT!!!

Try Again

CORRECT

Next Question

34. What is the typical duration of a normal, fast-dividing, mammalian cell

cycle?

1 hour 1 hour

24 hours24 hours

10 hours 10 hours

1 year 1 year

INCORRECT!!!

Try Again

CORRECT

Next Question

35. The human haploid number is which of the following?

30 30

2323

10 10

46 46

INCORRECT!!!

Try Again

CORRECT

Next Question

36. Which of the following events takes place during mitotic telophase?

Disassembly of nuclear envelope Disassembly of nuclear envelope

Reassembly of nuclear envelopeReassembly of nuclear envelope

Metaphase plate formation Metaphase plate formation

Cell division Cell division

INCORRECT!!!

Try Again

CORRECT

Next Question

37. In extremely fast dividing cells, which of the following phases of the cell cycle is

likely to be decreased or eliminated?

Interphase Interphase

G1 G1

M phase M phase

S phase S phase

INCORRECT!!!

Try Again

CORRECT

Next Question

38. How many homologous pairs are present in a cell with a diploid

number of 40?

40 40

1010

5 5

20 20

INCORRECT!!!

Try Again

CORRECT

Next Question

39. Which class of microtubules disappears during mitotic telophase?

Astral Astral

KinetochoreKinetochore

Polar Polar

Radial Radial

INCORRECT!!!

Try Again

CORRECT

Next Question

40. Which of the following is typically the longest phase of the cell cycle?

M phase M phase

G1G1

G2 G2

S phase S phase

INCORRECT!!!

Try Again

CORRECT

Next Question

41. A somatic cell has a haploid number of 10. After mitosis, what is the haploid number of each of the resulting cells ?

5 5

1010

20 20

40 40

INCORRECT!!!

Try Again

CORRECT

Next Question

42. Which class of microtubule elongates during mitotic telophase?

Astral Astral

PolarPolar

Kinetochore Kinetochore

Radial Radial

INCORRECT!!!

Try Again

CORRECT

Next Question

43. Which of the following phases usually contains the highest concentration of DNA

per cell?

G1 G1

G2G2

M phase M phase

S phase S phase

INCORRECT!!!

Try Again

CORRECT

Next Question

44. Germ cells give rise to what class of cell?

Mitotic Mitotic

GameteGamete

Somatic Somatic

Meiotic Meiotic

INCORRECT!!!

Try Again

CORRECT

Next Question

45. Which of the following is not a component of the contractile ring?

Actin Actin

Cyclin Cyclin

Myosin Myosin

Tubulin Tubulin

INCORRECT!!!

Try Again

CORRECT

Next Question

46. During which phase do mitotic cyclins accumulate in the cell cycle?

S phase S phase

G2G2

M phase M phase

G1 G1

INCORRECT!!!

Try Again

CORRECT

Next Question

47. A somatic cell has a haploid number of 20. After DNA replication, how many pairs

of sister chromatids are in the cell?

5 5

2020

40 40

10 10

INCORRECT!!!

Try Again

CORRECT

Next Question

48. Which of the following is not a type of cell that results from meiotic

cellular reproduction?

Germ cell Germ cell

Gamete Gamete

DiploidDiploid

Haploid Haploid

INCORRECT!!!

Try Again

CORRECT

Next Question

49. The activation of cyclin-dependent protein kinases by G1 cyclins signals entry

into which mitotic cell cycle phase?

M phase M phase

S phaseS phase

G2 G2

G1 G1

INCORRECT!!!

Try Again

CORRECT

Next Question

50. During which phase of meiosis does genetic re-assortment take place?

Prometaphase 1 Prometaphase 1

Prophase 1Prophase 1

Metaphase 1 Metaphase 1

Anaphase 1 Anaphase 1

INCORRECT!!!

Try Again

CORRECT

Next Question

http://www.biology.arizona.edu/cell_bio/tutorials/cell_cycle/cells3.html