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Cell Cycle, Mitosis, and Meiosis 101

Total questions: 70

Worksheet time: 2hrs 8mins

Name
Class
Date
1.

How many divisions are in meiosis?

a)

46

b)

23

c)

2

d)

4

2.

Timmy fell off his skateboard and scraped his knee. Which cell process is going to be used to heal the wound?

a)

Mitosis

b)

Meiosis

c)

The wound would not heal

d)

Cell diffusion

3.

If an organism reproduces asexually, its offspring will most likely be...

a)

genetically identical to the parent

b)

genetically different from each other

c)

produced from specialized cells known as gametes

d)

A mutant

4.

During prophase I crossing over occurs and genetic material is exchanged between homologous chromosomes. How is this important

a)

Increases genetic variation

b)

Reduces the diploid number to the haploid number

c)

Increases the haploid number to the diploid number

d)

Reduces the probability of mutations

5.

What does the image demonstrate

a)

Punnet squares

b)

Crossing over

c)

Metaphase

d)

Dna replication

6.

Which of the following are in order from smallest to largest

a)

Cells -> tissue -> organ -> organ system

b)

Cells -> Organ system -> tissue -> organ

c)

Organ system -> Organ -> Tissue -> Cell

d)

Tissue -> organ system -> Cell -> Organ

7.

If a person has leukemia, they are given a medicine that inhibits (stops) DNA synthesis. Which phase of the cell cycle will be most affected by this medicine?

a)

G1

b)

S

c)

G2

d)

M phase

8.

Which phase is not a phase of MITOSIS (when the nucleus divides)?

a)

Interphase

b)

Prophase

c)

Metaphase

d)

Anaphase

e)

Telophase

9.

How many daughter cells are produced by meiosis?

a)

one

b)

two

c)

four

d)

six

10.

How many daughter cells are produced by mitosis?

a)

one

b)

two

c)

four

d)

six

11.

A mosquito cell which undergoes mitosis has 6 chromosomes. How many chromosomes will the daughter cells have?

a)

3

b)

6

c)

12

d)

24

12.

Creation of reproductive cells (gametes) requires...

a)

Mitosis

b)

Meiosis

c)

Neither

13.

Replacement of dead cells requires...

a)

Mitosis

b)

Meiosis

c)

Neither

14.

Growth requires

a)

Mitosis

b)

Meiosis

c)

Neither

15.

When does crossing over occur?

a)

Metaphase I

b)

Metaphase II

c)

Prophase I

d)

Prophase II

16.

How many cells are produced as a result of meiosis?

a)

2

b)

4

c)

6

d)

8

17.

How many chromosomes are found in a human egg cell?

a)

23

b)

46

c)

unknown

18.

How many chromosomes are found in a human somatic cell?

a)

23

b)

46

c)

48

d)

52

19.

When does DNA replication occur?

a)

G1 phase

b)

S phase

c)

G2 phase

d)

Cytokinesis

20.

When are chromosomes visible during the cell cycle?

a)

Interphase

b)

Mitotic Phase

c)

Cytokinesis

d)

Never

21.

As a cell becomes larger...

a)

Its volume increases faster than its surface area

b)

Its volume and surface area increase at equal rates

c)

The volume increases but the surface area remains the same

22.

What is the period between cell divisions?

a)

Interphase

b)

Prophase

c)

Metaphase

d)

Anaphase

23.

Which of the following results in two cells identical to the parent cell?

a)

mitosis

b)

meiosis

24.
If a parent cell has 12 chromosomes, how many chromosomes will each gamete have after meiosis?
a)
4
b)
6
c)
12
d)
24
25.
What three phases make up the cell cycle?
a)
Binary Fission, Vegetative Propagation, Fragmentation
b)
G1, S, G2
c)
Interphase, Mitosis, Cytokinesis
d)
Prophase, Metaphase, Telophase
26.
In which phase of the cell cycle does this occur:
A nuclear membrane reforms around the chromosomes.
a)
Prophase
b)
Interphase
c)
Anaphase 
d)
Telophase
27.
In which phase of the cell cycle does this occur:
The chromatin condenses and chromosomes become visible.
a)
Anaphase
b)
Telophase
c)
Metaphase
d)
Prophase
28.
In which phase of the cell cycle does this occur:
Stage of intense cell growth and activity.
a)
G1 stage
b)
S stage
c)
Metaphase
d)
Prophase
29.
In which phase of the cell cycle does this occur:
A cell spends 90% of the cycle in this phase.
a)
Metaphase
b)
Prometaphase
c)
Prophase
d)
Interphase
30.
What is a cleavage furrow?
a)

Forms at the beginning of Cytokinesis in plant cells

b)
handle for spindle fibers
c)

Forms at the beginning of Cytokinesis in animal cells

d)
pulls chromosomes apart
31.
Another name for a sex cell is a:
a)
gamete
b)
embryo
c)
bone cell
d)
muscle cell
32.

After meiosis is complete, how many daughter cells will be produced?

a)

1

b)

2

c)

3

d)

4

33.

At the end of MEIOSIS, the haploid number of chromosomes in a human sex cell (gamete) is:

a)

46

b)

92

c)

22

d)

23

34.

What is the name of the process in which homologous chromosomes exchange information during meiosis?

a)

switching

b)

crossing-over

c)

melding

d)

blending

35.

In which types of cells does mitosis occur?

a)

egg cells

b)

sperm cells

c)

jail cells

d)

Body cells except the sperm and egg cells

36.

Which stage of mitosis is this?

a)

Prophase

b)

Metaphase

c)

Anaphase

d)

Telophase

37.

Which stage of mitosis is this?

a)

Prophase

b)

Metaphase

c)

Anaphase

d)

Telophase

38.

Which of the following shows the correct order for mitosis?

a)

Prophase, telophase, anaphase, metaphase

b)

telophase, metaphase, anaphase, prophase

c)

prophase, metaphase, anaphase, telophase

d)

prophase, metaphase, telophase, anaphase

39.

What is cancer?

a)

A group of diseases characterized by no cell growth

b)

A group of diseases caused by the failure of chromosomes to separate

c)

A group of diseases characterized by uncontrolled cell division

d)

A group of diseases caused by normal replication of chromosomes

40.

The division of the cytoplasm is called ______.

a)

mitosis

b)

interphase

c)

cytokinesis

d)

somatic

41.
In the S stage of interphase_______________
a)
the cell grows
b)
the nucleus divides
c)
the cell membrane divides
d)
the DNA is replicated
42.

In the G1 stage of the cell cycle, the cell

a)

Grows and carries out routine functions

b)

Divides

c)

Copy DNA

d)

None of the above

43.

What ensures that cells only divide when conditions are right?

a)

ribosomes

b)

spindle fibers

c)

centromeres

d)

cyclins and check points

44.

This is...

a)

Metaphase

b)

Interphase

c)

Telophase

d)

Anaphase

45.

This is...

a)

Metaphase

b)

Cytokinesis

c)

Telophase

d)

Anaphase

e)

Prophase

46.

This is...

a)

Metaphase

b)

Cytokinesis

c)

Telophase

d)

Anaphase

e)

Prophase

47.

This is...

a)

Metaphase

b)

Interphase

c)

Telophase

d)

Anaphase

e)

Prophase

48.

This is...

a)

Metaphase

b)

Interphase

c)

Telophase

d)

Anaphase

e)

Prophase

49.

Specialized fibers that pull sister chromatids and chromosomes during Anaphase in mitosis, and Anaphase I and II in meiosis...

a)

Spindle Fibers

b)

Microtubules

c)

Traction Fibers

d)

Centrioles

50.

This is a...

a)

Sister Chromatid

b)

Chromosome

c)

XX

d)

Tetrad

51.

On the diagram, A is...

a)

Homologous Chromosomes

b)

Sister Chromatids

c)

Centromere

d)

Chromosome

52.

On the diagram, B is...

a)

Homologous Chromosomes

b)

Sister Chromatids

c)

Centromere

d)

Chromosome

53.

On the diagram, C is...

a)

Homologous Chromosomes

b)

Sister Chromatids

c)

Centromere

d)

Chromosome

54.

On the diagram, D is...

a)

Homologous Chromosomes

b)

Sister Chromatids

c)

Centromere

d)

Chromosome

55.

What forms in plant cells during cytokinesis?

a)

Cell plate

b)

Cleavage furrow

c)

Chromatid Bridge

d)

Centriole Wall

56.

The nucleolus is responsible for:

a)

Ribosome Production

b)

DNA Replication

c)

Protein Folding

d)

Telling Stomata When to Open and Close

57.

If a cell’s nucleolus clearly is visible, the cell is most likely in:

a)

Interphase

b)

Prophase

c)

Metaphase

d)

Anaphase

58.

What are spindle fibers made of?

a)

RNA

b)

Lipids

c)

Microtubules in the cytoskeleton

d)

DNA

59.

Which of the following is only found in animal cells? Select all that apply

a)

Asters

b)

Microtubules

c)

Spindle Fibers

d)

Centrioles

60.

Which of the following correctly defines diploid?

a)

A cell that only contains autosomes

b)

A cell that contains one set of chromosomes (1n)

c)

A set that contains two sets of chromosomes (2n)

d)

A cell that has lost its nucleus

61.

Independent assortment increases genetic diversity because:

a)

Sister chromatids separate at random times

b)

Crossing over happens more frequently

c)

Maternal and paternal chromosomes randomly align and separate

d)

Chromosomes replicate twice

62.

What is most similar to mitosis on the way that it divides sister chromatids?

a)

Meiosis I

b)

Meiosis II

c)

Meiosis III

d)

Meiosis IV

63.

Why is meiosis I often called “reduction division”?

a)

Because the chromosome number is cut in half

b)

Because the cell loses organelles

c)

Because the cell size decreases

d)

Because DNA is degraded

64.

Which event most directly leads to genetic differences between siblings (except identical twins)?

a)

Mutation

b)

Chromosome replication

c)

Cytokinesis

d)

Crossing over and independent assortment

65.

Which statement best describes an allele?

a)

A structure in the nucleus that contains many genes

b)

A segment of DNA that codes for a specific protein

c)

A different version of the same gene found at the same location on homologous chromosomes

d)

A complete set of chromosomes in an organism

66.

Mitosis in human cells takes approximately

a)

12 hours

b)

1 hour

c)

45 minutes

d)

18 hours

67.

Mitosis in cancer cells takes approximately

a)

12 hours

b)

1 hour

c)

45 minutes

d)

18 hours

68.

If a gene controls flower color, what would the alleles represent?

a)

The overall size of the flower

b)

Color options such as purple or white

c)

The location of the flower on the stem

d)

The total number of petals on the flower

69.

Why does DNA helicase "unzip" DNA during the synthesis stage?

a)

To allow chromosomes to condense for cell division

b)

To expose the nitrogen bases so the DNA can be copied correctly

c)

To help the cell destroy damaged genetic material

d)

To prepare the nucleus for cytokinesis

70.

A student observes a cell under a microscope and notices that the DNA is tightly coiled into visible chromosomes. In a nearby cell, the DNA appears uncoiled and threadlike.

Question:
What can the student conclude about the stages of these two cells?

a)

Both cells are in cytokinesis because the cytoplasm is dividing.

b)

The cell with coiled DNA is preparing for division, while the uncoiled one is copying DNA during interphase.

c)

Both cells are in interphase because DNA is always uncoiled.

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