Cell Cycle and Cell Division Test

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Cell Cycle and Cell Division Test - 52

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Weekly Quiz Competition

Question 1
1 / -0

In animal cells, cytokinesis involves _______.

A
Separation of sister chromatids

B
Contraction of ring of microfilaments

C
Depolymerisation of kinetochore microtubules

D
Protein kinase that phosphorylates other enzymes

Solution

In animal cells, cytokinesis involves in the separation of sister chromatids. The process can be divided to the following distinct steps; anaphase spindle reorganization, actin-myosin ring assembly and contraction, and abscission.
So, the correct answer is option A.
Question 2
1 / -0

Meiotic cell division is also termed as reduction division because of

A
Involvement of gametes

B
Doubling of chromosomes

C
Elimination of chromosomes

D
Number of chromosomes becomes halved

Solution

D. Number of chromosomes becomes halved
EXPLANATION: The cellular division in meiosis I is called the reduction division because it results in the reduction of the chromosome number. The chromosome number becomes haploid from diploid.
Question 3
1 / -0

Which one is related to telophase ?

A
Formation of nuclear membrane

B
Formation of nucleolus

C
Elongation of chromosome

D
Formation of two daughter nuclei
Question 4
1 / -0

During mitosis ER and nucleolus begin to disappear at __________.

A
Early metaphase

B
Late metaphase

C
Early prophase

D
Late prophase

Solution

During mitosis, Endoplasmic Reticulum (ER) and nucleolus begin to disappear at early prophase and these are not observed in late prophase.
So the correct answer is 'Late prophase'.
Question 5
1 / -0

During meiosis ___________.

A
Linkage is disturbed

B
Homologous chromosomes are separated

C
Homologous chromosomes do not segregate

D
All the above

Solution

In meiotic division, the homologous chromosomes are separated in anaphase I of meiosis I.
Hence B is the correct option.
Question 6
1 / -0

If a cell possesses twice as much DNA as in the functional cell, the cell __________.

A
Is preparing to divide

B
Has completed division

C
Has ceased to function

D
Has reached end of its life span

Solution

A. Is preparing to divide
EXPLANATION: When a cell divides, its DNA content gets doubled. So if a cell possesses twice as much DNA as in the functional cell, the cell is preparing for division.
Question 7
1 / -0

Which is correct for mitotic cell cycle?

A
$$ S \rightarrow G_1\rightarrow G_2 \rightarrow M \rightarrow S$$

B
$$ G_2 \rightarrow G_1 \rightarrow S \rightarrow M \rightarrow G_2$$

C
$$G_1 \rightarrow G_1\rightarrow S \rightarrow M \rightarrow G_2$$

D
$$G_1 \rightarrow S \rightarrow G_2 \rightarrow M \rightarrow G_1$$

Solution

D. $$G_1$$ - S - $$G_2$$ - M - $$G_1$$
EXPLANATION: The cell cycle is a four-stage process in which the cell increases in size in $$G_1$$ phase, copies its DNA in S phase, prepares to divide in $$G_2$$ phase and divides in M phase. The stages $$G_1$$, S and $$G_2$$ make up interphase, which accounts for the span between cell divisions.
Question 8
1 / -0

In meiosis, chromosome number becomes ______________.

A
One half of parent cell

B
Same as parent cell

C
One-fourth of parent cell

D
Double of parent cell

Solution

By the end of meiosis, the resulting reproductive cells, or gametes, each have 23 genetically unique chromosomes. The overall process of meiosis produces four daughter cells from one single parent cell. Each daughter cell is haploid, because it has half the number of chromosomes as the original parent cell.
Thus, A is the correct option.
Question 9
1 / -0

$$G_2$$ phase occurs between

A
$$G_1$$ and S

B
M and S

C
S and M

D
$$G_1$$ and M

Solution

G2 phase is the second subphase of Interphase in the cell cycle preceding mitosis. DNA is replicated during S phase and it enters into the G2 phase when the cell prepares for mitosis or meiosis. Synthesis of proteins needed for spindle formation and mitosis are synthesized during this phase, The cell doublechecks the DNA for replication errors and afterward, all cells migrate to mitosis. Hence option C is correct.
Question 10
1 / -0

In meiosis ______________.

A
First division is reductional

B
First division is equational

C
Second division is reductional

D
None of the above

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Cell Cycle and Cell Division Test - 52

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Cell Cycle and Cell Division Test - 52

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Question 1

Separation of sister chromatids

Contraction of ring of microfilaments

Depolymerisation of kinetochore microtubules

Protein kinase that phosphorylates other enzymes

Solution

Question 2

Involvement of gametes

Doubling of chromosomes

Elimination of chromosomes

Number of chromosomes becomes halved

Solution

Question 3

Formation of nuclear membrane

Formation of nucleolus

Elongation of chromosome

Formation of two daughter nuclei

Question 4

Early metaphase

Late metaphase

Early prophase

Late prophase

Solution

Question 5

Linkage is disturbed

Homologous chromosomes are separated

Homologous chromosomes do not segregate

All the above

Solution

Question 6

Is preparing to divide

Has completed division

Has ceased to function

Has reached end of its life span

Solution

Question 7

$$ S \rightarrow G_1\rightarrow G_2 \rightarrow M \rightarrow S$$

$$ G_2 \rightarrow G_1 \rightarrow S \rightarrow M \rightarrow G_2$$

$$G_1 \rightarrow G_1\rightarrow S \rightarrow M \rightarrow G_2$$

$$G_1 \rightarrow S \rightarrow G_2 \rightarrow M \rightarrow G_1$$

Solution

Question 8

One half of parent cell

Same as parent cell

One-fourth of parent cell

Double of parent cell

Solution

Question 9

$$G_1$$ and S

M and S

S and M

$$G_1$$ and M

Solution

Question 10

First division is reductional

First division is equational

Second division is reductional

None of the above

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