Cell Cycle and Cell Division Test

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Cell Cycle and Cell Division Test - 1

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Question 1
1 / -0

Each chromosome consists of ---- chromatid.

A
Two

B
Four

C
One

D
Eight

Solution

Explanation:

The resulting two identical copies of DNA are connected to each other at the centromere. Each copy is called a chromatid. A chromosome, before cell division is formed of one chromatid while it is formed of two chromatids after cell division.
Question 2
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Which one proceeds reformation of nuclear envelope during M-phase of cell cycle?

A
Decondenstion of chromosomes with appearance of nuclear lamina.

B
Formation of contractile ring and phragmoplast

C
Formation of contractile ring and transcription

D
Transcription from chromosomes and reassemble of nuclear lamina

Solution

Explanation:

Before the completion of Mitosis reapperance of nuclear membrane takes place along with formation of nucleolus so that the cells bocemo separate enetities after cytokinesis but having same chromosome number as parent cells.
Question 3
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S phase marks

A
Chromosome condensation

B
DNA replication and chromosome duplication.

C
It carries out normal metabolism

D
Cytoplasmic growth

Solution

Explanation:

S phase marks the phase of DNA replication and chromosome duplication. In this phase increase in the amount of DNA takes place. No synthesis of proteins or RNA takes place.
Question 4
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In which stage, the cells remain metabolically active but do not proliferate?

A
G1-phase

B
G2-phase

C
Go-phase

D
S-phase

Solution

Explanation:

In Go stage the cells are in a metabolically active state but do not divide unless there are some abnormal genes which reverses the same. This stage is also called quiscent stage. Examples human nerve cells.
Question 5
1 / -0

The resting phase is otherwise called as

A
Interphase

B
Telophase

C
Prophase

D
Metaphase

Solution

Explanation:

The interphase, though called the resting phase, is the time during which the cell is preparing for division by undergoing cell growth in an orderly manner. No divisional activities occur during this phase. Hence the name.
Question 6
1 / -0

In animal cells, during G2 phase

A
spindle fibres are formed

B
Proteins are synthesized

C
middle lamellae are formed

D
DNA are synthesized

Solution

Explanation:

During the G2 phase, proteins and RNA are synthesised in preparation for mitosis while cell growth continues.
Question 7
1 / -0

M phase represents

A
Meiosis I phase

B
Mitosis phase

C
Metaphase

D
Meiosis phase

Solution

Explanation:

The M Phase represents the phase when the actual cell division or mitosis occurs/starts during cell cycle.
Question 8
1 / -0

In yeast the cell cycle is progressed through

A
20 minutes

B
30 minutes

C
60 minutes

D
90 minutes

Solution

Explanation:

Yeast can progress through the cell cycle in only about 90 minutes due to its simple organisation.
Question 9
1 / -0

The number of chromosome and the amount of DNA are changed in

A
Metaphase and M phase

B
None of these

C
Anaphase and S phase

D
Interphase and S phase

Solution

Explanation:

S phase marks the period during which DNA synthesis or replication takes place. During this time the amount of DNA per cell doubles. If the initial amount of DNA is denoted as 2C then it increases to 4C.and even in anaphase the chromosome numbers are changed.
Question 10
1 / -0

What is the average cell cycle span for a mammalian cell?

A
4 hours

B
12 hours

C
48 hours

D
24 hours

Solution

Explanation:

All the phases of cell cycle in mammalian cell are completed in 24 hours.

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Re-Attempt Weekly Quiz Competition

Cell Cycle and Cell Division Test - 1

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Cell Cycle and Cell Division Test - 1

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Question 1

Two

Four

One

Eight

Solution

Question 2

Decondenstion of chromosomes with appearance of nuclear lamina.

Formation of contractile ring and phragmoplast

Formation of contractile ring and transcription

Transcription from chromosomes and reassemble of nuclear lamina

Solution

Question 3

Chromosome condensation

DNA replication and chromosome duplication.

It carries out normal metabolism

Cytoplasmic growth

Solution

Question 4

G1-phase

G2-phase

Go-phase

S-phase

Solution

Question 5

Interphase

Telophase

Prophase

Metaphase

Solution

Question 6

spindle fibres are formed

Proteins are synthesized

middle lamellae are formed

DNA are synthesized

Solution

Question 7

Meiosis I phase

Mitosis phase

Metaphase

Meiosis phase

Solution

Question 8

20 minutes

30 minutes

60 minutes

90 minutes

Solution

Question 9

Metaphase and M phase

None of these

Anaphase and S phase

Interphase and S phase

Solution

Question 10

4 hours

12 hours

48 hours

24 hours

Solution

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