Cell Cycle and Cell Division Test

Result

Cell Cycle and Cell Division Test - 53

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Which of the following statement is incorrect about $$G_0$$ phase of the cell cycle ?

A
Cell metabolism continues in $$G_0$$

B
Cell growth occurs in $$G_0$$

C
Biocatalyst help exit $$G_0$$

D
Mitosis occurs after $$G_0$$
Solution
The $$G_0$$ phase in the cell cycle is also known as quiescent stage or resting state.
This happens when there is the absence of mitogens and energy-rich compounds.
The cells do not grow or differentiate in this phase, although the cells remain metabolically active.
They are like reserve cells, as these cells can enter $$G_0$$ phase and undergo differentiation and specialization.
Hence, the correct answer is option A.
Question 2
1 / -0

The given figure represents

A
Prophase I

B
Prophase II

C
Prophase of mitosis

D
Prophase and metaphase of mitosis
Solution
Correct Option: A
Explanation:
- During prophase I of meiosis, homologous chromosomes combine and type synapses, a step distinctive to meiosis.
- The bivalents are the paired chromosomes and so the creation of chiasmata reasoned by genetic recombination becomes apparent.
- Chromosomal condensation permits these to be viewed beneath the magnifier.
- Hence, The given diagram represents meiosis Prophase I.
Question 3
1 / -0

Which is not characteristic of meiosis?

A
Two stages of DNA replication, first before meiosis I and second before meiosis II

B
Recombination and crossing over

C
Sister chromatids separate during anaphase II

D
Nuclear membrane disappears towards end of prophase
Question 4
1 / -0

Yeast complete cell cycle in _____________.

A
30 minutes

B
60 minutes

C
90 minutes

D
120 minutes

Solution

One cell cycle of yeast is almost 90 minutes and a human cell takes almost 24 hours to divide by mitosis therefore by calculations it seems that a yeast can perform mitosis almost 16 times in the time of 1 division of a human cell.
Thus 90 is correct option.
Question 5
1 / -0

Choose the correctly matched pairs and correct option.
(a) Leptotene - Chromosomes become invisible
(b) Zygotene - Pairing of homologous chromosomes
(c) Pachytene - Dissolution of the synaptonemal complex takes place
(d) Diplotene - Chaismata is seen
(e) Diakinesis - Terminalisation takes place

A
a, b correct

B
b, d correct

C
b, d, e correct

D
b, c correct

E
c, d correct
Solution
In meiosis I division, the prophase I is divided into 5 substages are-
a. Leptotene :-
Condensing of chromosomes
b. Zygotene :-
Synapsis between homologous chromosome
Synaptonemal complex is formed
After synapsis, they are called bivalent.
c. Pachytene :-
Crossing over take place.
Two sister chromatids separates from each other
d. Diplotene :-
Allows the two chromosome to move apart held by chiasmata.
e. Diakinesis :-
Termination of condensing of the chromosomes.
So, the correct answer is option C.
Question 6
1 / -0

Which substance is used to keep cells in metaphase stage of mitosis in blood culture technique

A
Cholecystokinin

B
Chitin

C
Colehicine

D
Phytohaemoglobin

Solution

Substance used to keep cells in meta phase stage of mitosis is blood culture technique - Colehicine
This is a mitosis as this interfaces with cell division through its disruptive action on the mitotic spindle. This inhibition occurs either through a direct or indirect effect of the compound on the spindle.
Question 7
1 / -0

In onion root tip during mitotic metaphase, the number of kinetochores is

A
4

B
64

C
32

D
16

Solution

In onion root tip, each somatic cell contains 8 chromosomes. A cell undergoing cell division has duplicated its chromosomes thus a cell at metaphase stage of cell division has 16 chromosomes. As each chromosome has two kinetochores thus during metaphase 32 kinetochores can be seen.
So, the correct answer is '32'.
Question 8
1 / -0

A stage in mitosis that begins in mid anaphase and completed with telophase is

A
Crossing over

B
Karyokinesis

C
Cytokinesis

D
Interkinesis
Question 9
1 / -0

Select the correct matches (a) S-phase: DNA replication (b) Zygotene: Synapsis (c) Diplotene: Crossing over (d) Meiosis: Both haploid and diploid cells. (e) Gap 2 phase: Quiescent stage

A
a and b

B
c and d

C
c and e

D
a, c and e

Solution

A cell cycle comprises of interphase and division phase. The interphase is the longest phase of cell cycle. It comprises of first growth phase, S phase and second growth phase. The S phase is the synthesis phase in which DNA replication occurs. The meiotic division is carried out in two stages: meiosis I and meiosis II. The meiosis I comprises of prophase I, metaphase I, anaphase I and telophase I. The prophase I is very elaborate stage and comprises of several substages - leptotene, zygotene, pachytene, diplotene and diakinesis. The chromosomes coil at the leptotene stage. Homologous chromosomes pair at the zygotene stage. The pairing of homologous chromosomes is called as synapsis. This is followed by crossing over in the pachytene stage.
Question 10
1 / -0

Which of these is not a key feature of meiosis?

A
Meiosis involves two sequential cycles of nuclear and cell division.

B
Meiosis involves the pairing of homologous chromosomes.

C
Two cycles of DNA replication occur during meiosis.

D
There is recombination between non-sister chromatids of homologous chromosomes.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Cell Cycle and Cell Division Test - 53

Result

Cell Cycle and Cell Division Test - 53

Score

-

Rank

-

SHARING IS CARING

Question 1

Cell metabolism continues in $$G_0$$

Cell growth occurs in $$G_0$$

Biocatalyst help exit $$G_0$$

Mitosis occurs after $$G_0$$

Solution

Question 2

Prophase I

Prophase II

Prophase of mitosis

Prophase and metaphase of mitosis

Solution

Question 3

Two stages of DNA replication, first before meiosis I and second before meiosis II

Recombination and crossing over

Sister chromatids separate during anaphase II

Nuclear membrane disappears towards end of prophase

Question 4

30 minutes

60 minutes

90 minutes

120 minutes

Solution

Question 5

a, b correct

b, d correct

b, d, e correct

b, c correct

c, d correct

Solution

Question 6

Cholecystokinin

Chitin

Colehicine

Phytohaemoglobin

Solution

Question 7

4

64

32

16

Solution

Question 8

Crossing over

Karyokinesis

Cytokinesis

Interkinesis

Question 9

a and b

c and d

c and e

a, c and e

Solution

Question 10

Meiosis involves two sequential cycles of nuclear and cell division.

Meiosis involves the pairing of homologous chromosomes.

Two cycles of DNA replication occur during meiosis.

There is recombination between non-sister chromatids of homologous chromosomes.

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.