Biology Chapter No. 7 CELL CYCLE 2nd Year Online MCQs

by userSeptember 17, 2019May 10, 202200

Biology
CELL CYCLE
Chapter No. 7
Second Year
Multiple Choice Questions
Note : All MCQ’s selected in this test are from OLD F.Sc. board , UHS and PMC(Pakistan Medical Commission) Islamabad Papers.

Book Name : Biology
Chapter No. 07
Chapter Name : CELL CYCLE
Total MCQ from Text Book : 97
Book Version : 2022
Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ
Exam conduct By : Inter Boards ofSindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade : 12th ( F.Sc. Intermediate)
Total Marks : 97
Total Time : 97 minutes

GRADE 12 - BIOLOGY CHAPTER NO.7 CELL CYCLE

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GRADE 12 - BIOLOGY CHAPTER NO.7 CELL CYCLE

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Question 1

Molosls is a:

A	Equatorial division
B	Reduction division
C	Homotypic division
D	None

Question 2

Synapsis occurs during

A	diplotene
B	Zygotene
C	Pachytene
D	Leptotene

Question 3

Pairing of homologous chromosomes is called as

A	synapsis
B	bivalent
C	synapse
D	(0) tetrad

Question 4

The period of cell cycle between two consecutive divisions is termed as:

A	prov-ase
B	Metaphase
C	Interphase
D	Telephase

Question 5

Decision for division occurs in a cell at:

A	G, period
B	Before prophaSe
C	G2 period
D	S period

Question 6

In which stage of prophase-I, crossing over occurs:

A	Zygotene
B	Leptotene
C	Diplotene
D	Paqhytene

Question 7

The death of cell due to tissue damage is called

A	apoptosis
B	metastsis
C	necrosis
D	Phagocytosis

Question 8

In prophase, the chromosomes condense & become shorter & thicker:

A	Increased coiling of proteins
B	Increased coiling of chromatids
C	Disintegration of nuclear membrane
D	Microtubules pulling chromosomes closer

Question 9

Which of the following Is the longest phase In cell division?

A	Diplotene
B	Leptotene
C	liachytene
D	Zygotenei

Question 10

The microtubules of mitotic apparatus are composed of protein tubulin and traces of:

A	Fats
B	RNA
C	Glycerol
D	DNA

Question 11

One the following is not included in karyokinesis:

A	Telophase
B	Metaphase
C	Interkinesis
D	lnterphase

Question 12

Chiasma are most appropriately observed in meiosis during:

A	Diakinesis
B	Diplotene
C	Metaphase II
D	Pachytene

Question 13

Karyokinesis involves division of Nucleus and Cytokinesis refers to:

A	Division of Centromere
B	Division of Whole Cell
C	Division of Cell Wall
D	Division of Cytoplasm

Question 14

Nerve cells and eye lens cells remaining stage for life time

A	G0
B	S
C	G1
D	G2

Question 15

The sequence in the cell cycle is:

A	G 1, S, G2, M
B	G2, S, M, G2
C	S, Cl, G2, M
D	S, M, G1, G2

Question 16

Pairing of homologous chromosomes for tetrad formation starts at

A	Pachytene
B	Diplotene
C	Zygotne
D	Leptotene

Question 17

Phragmoplast is formed by vesicles originated from

A	Endoplasmic reticulum
B	Golgi complex
C	Chloroplast
D	Mitochondria

Question 18

Protein sontlal for chromatin formation:

A	I listone
B	Myosin
C	Actin
D	Tubulin

Question 19

What are the significant happenings of meiosis

A	Linkage
B	Crossing over
C	Crossing over and random assortment of chromosomes
D	Random assortment of chromosomes

Question 20

Unequal separation of chromosomes is called

A	Disjunction
B	Separation
C	Non-disjunction
D	Metastasis

Question 21

The Syndrome in which individual has short stature, webbed neck, with out ovaries and complete absence of germ cells is

A	Mongolism
B	Turner's syndrome
C	Kline fetter syndrome
D	Down's syndrome

Question 22

G1 (Gap I) is the period of:

A	Metabolic Activity
B	Rest
C	Synthesis
D	Movement

Question 23

The tumor which is localized and not transferred to other body parts

A	Malignant
B	Benign
C	Apoptosis
D	Necrosis

Question 24

The sex chromosomes of the person affected with Klinefelter syndrome is:

A	XXX
B	XY
C	XYY
D	XXY

Question 25

The number of sets of microtubules originate from each pair of centriole is

A	3
B	6
C	5
D	4

Question 26

Cancer occurs due to error in

A	Mitosis
B	Budding
C	Meiosis
D	Binary

Question 27

When chromosomes reach to the poles, the phase starts is:

A	Anaphase
B	Telophase
C	Metaphase
D	Prophase

Question 28

Cell cycle is:

A	Growth period
B	Series of changes in cell
C	Cell division
D	Replication of DNA

Question 29

Cancer is caused mainly by mutation in

A	Sex cells
B	Reproductive cells
C	Malignant cells
D	Somatic cells

Question 30

Synapsis takes place in

A	Anaphase
B	. Zygotene
C	Leptotene
D	Pachytene

Question 31

Prognmmed and organized process of cell death is also called

A	Cancer
B	Necrosis
C	Apoptosis
D	Metastasis

Question 32

Karyokinesis involves division of

A	cytoplasm
B	nucleus
C	cell membrane
D	Cells

Question 33

Cell Death due to tissue damage is called

A	Apoptosis
B	Necrosis
C	Metastasis
D	Suicide

Question 34

Crossing over occurs during

A	Diplotene
B	Pachytene
C	Zygotene
D	Leptotene

Question 35

The reduction division is also called:

A	Meiosis I
B	Meiosis 11
C	Meiosis I & Meiosis 11
D	Amitosis

Question 36

The vesicle forming phragmoplast originate during

A	Interphase
B	Telophase
C	Metaphase
D	Prophase

Question 37

In which phase of mitosis the chromatids of chromosomes separates from each other

A	Prophase
B	Telophase
C	Metalphase
D	Anaphase

Question 38

Mental retardation is one of the most important characteristic of the human individuals affected with:

A	Down's syndrome
B	Klinefelter's syndrome
C	Turner's syndrome
D	none of these

Question 39

Down's syndrome in human beings is due to:

A	a missing autosome
B	an extra autosome
C	a missing sex chromosome
D	an extra sex chromosome

Question 40

The pairing of homologous chromosomes is completed in

A	zygotene
B	leptotene
C	diplotene
D	pachytene

Question 41

Cytoplasm becomes more viscous during:

A	Anaphase
B	Telophase
C	Metaphase
D	Prophase

Question 42

Meiosis & Mitosis are found in:

A	Diploid and haploid or diploid cells
B	Haploid or diploid & haploid cells
C	Diploid cells
D	Diploid and haploid cells

Question 43

Apoptosis is

A	Weakness of cells
B	Death of cells by tissue damage
C	Suicide of cells
D	Division of cells

Question 44

Chromosomal doubling Occurs in

A	Go phase
B	G2 phase
C	G1 phase
D	S-Phase

Question 45

In non-disjunction chromosomes fail to segregate during

A	lnterphase
B	Meta phase
C	Anaphase
D	Prophase

Question 46

Length of cell cycle in yeast cells is:

A	30 minutes
B	120 minutes
C	90 minutes
D	60 minutes

Question 47

Chromosomes appear inside the nucleus at the time of

A	Cell division
B	Cell elongation
C	Cell maturation
D	Cell differentiation

Question 48

Chromosomes can be counted at:

A	Metaphase
B	Telophase
C	Prophase
D	Anaphase

Question 49

The main significance of mitosis is that:

A	It reduces the number of chromosomes
B	It ensures genetic homogeneity of cells
C	It causes genetic variation
D	It causes transformation of DNA to RAN

Question 50

Post mitotic cell can exis the cell cycle during phase

A	G -1
B	G - 0
C	S
D	G-2

Question 51

Crossing over indicates that chromosomes are:

A	Nucleoprotein
B	Hertones & Histones
C	Sticky in nature
D	Disjunction

Question 52

How many times mitotic divisions will take place to produce 512 cells from a single parent cell

A	256
B	9
C	510
D	158

Question 53

Amitotic divisions are usually found in:

A	Prokaryote
B	Mesokaryotes
C	Eukaryotes
D	Prokaryote & Eukaryotes

Question 54

Tumors non transferable to other parts are:

A	Tumors
B	Malignant
C	Beingn
D	Cancer

Question 55

During cell division the nuclear division is called

A	Plasmolysis
B	Karyokinesis
C	Cytokinesis
D	Karyotype

Question 56

The syndrome having trisomy of chromosome number 18 is

A	Down
B	Jacob
C	Patau
D	Edwards

Question 57

Meiosis generally takes place in plants during formation of

A	Spores
B	Gametes
C	Zygote
D	Embryo

Question 58

The microtubule is composed of traces of RNA and protein called:

A	Myosin
B	Actin
C	tubulin
D	Troponin

Question 59

Cancer is caused mainly by mutations in:

A	G2 stage
B	S-phase
C	Somatic cells
D	Sex cells

Question 60

The pairing of homologous chromosomes is completed in:

A	Zygotene
B	Lepotene
C	Pachytene
D	Diplotene

Question 61

Which of the following is not a divisional stage?

A	interphase
B	Metaphase
C	Prophase
D	Telophase

Question 62

Which tumor is delocalized or has branches other than site of origin

A	Malignant
B	Benign
C	Apoptos's
D	Benign & Malignant

Question 63

Chromatin network is visible during

A	interphase
B	Anaphase
C	prophase
D	metaphase

Question 64

In human cell, average cell cycle is about:

A	24 hours
B	12 hours
C	18 hours .
D	6 hours

Question 65

The kinetochore fibres of spindle attach to chromosome at region

A	Chore
B	Centriole
C	Kinetic
D	Kinetochore

Question 66

Microtubules are composed of

A	insulin
B	Adrenaline
C	tubulin
D	haemoglobin

Question 67

Special type of cell division in which the number of chromosomes in daughter cells is reduced to half as compared to parent cell is called as:

A	mitosis
B	budding
C	meiosis
D	parthenogenesis

Question 68

A female lacking ovaries and germ cells is probably affected with

A	Turner's syndrome
B	Down's syndrome
C	Haemophilia
D	Klinefelter's syndrome

Question 69

The Turner syndrome is due to:

A	an extra autosome
B	a missing autosome
C	a missing sex chromosome
D	an extra sex chromosome

Question 70

The spindle fibers are composed of traces of RNA 8, a protein called:

A	spindilin
B	None
C	tubulin
D	spindilin & tubulin

Question 71

Post Mitotic Cell can exit the Cell Cycle during

A	S - Phase
B	G2 - Phase
C	G1 - Phase
D	Go - Phase

Question 72

The spread of tumor cells and establishment of secondary area of growth is known as

A	Apoptosis
B	Epigenesis
C	Necrosis
D	Metastasis

Question 73

Duplication of Nuclear material in the cell initiates the phase:

A	G2
B	G1
C	S
D	GO

Question 74

The paired chromosomes repel each other and begin to separate in

A	Diplotene
B	Zygotene
C	Pachytene
D	Leptotene

Question 75

In the case of human cell, average cell cycle is about

A	28 hours
B	24 hours
C	26 hours
D	30 hours

Question 76

Full cell cycle in yeast cells has length of:

A	120 minutes
B	30 minutes
C	90 minutes
D	60 minutes

Question 77

The phragmoplast is organized:

A	At the beginning of telophase
B	At the beginning of anaphase
C	At the end of anaphase
D	At the end of telophase

Question 78

Which one sub-stage of prophase-I of meioses-I lasts for days, weeks or even years?

A	Leptotene
B	Diplotene
C	Zygotene
D	Pachytene

Question 79

The plane of new wall formation in a dividing cell is determined by:

A	Golgi apparatus
B	Microfilaments
C	ER
D	Microtubules

Question 80

The linear arrangement of genes is evidenced in:

A	Zygotene
B	Leptotene
C	Diakinesis
D	Metaphase

Question 81

Each chromosome when visible consists of two unseparated replicas known as:

A	cross over
B	chiasmata
C	chromatid
D	tatrad

Question 82

Mongolism is also known as

A	Klinefelters syndrome
B	Down's syndrome
C	Turner's syndrome
D	Jacob's syndrome

Question 83

Prolonged prophase is characteristic of:

A	Meiosis
B	Mitosis
C	Mitosis of cleavage
D	Amitosis

Question 84

The period of life cycle of cell between two consecutive divisions is termed as

A	Resting Phase
B	G1 Phase
C	Inter Phase
D	G2 Phase

Question 85

Which of the following is true?

A	Cytokinesis and karyokinesis are random
B	Cytokinesis and karyokinesis occur together
C	Cytokinesis precedes karyokinesis
D	Karyokinesis precedes cyt

Question 86

The cell death due to tissue damage is called

A	Autophagy
B	Death
C	Apoptosis
D	Necrosis

Question 87

The microtubules which originate from the centrioles during mitosis in animal cell give rise to:

A	aster
B	aster & spindle
C	spindle
D	None

Question 88

The centrioles lie within the:

A	chromosome
B	centrosome
C	nucleus
D	nucleosome

Question 89

Cell grows about twice its size during the phase:

A	G1
B	G2
C	Anaphase
D	S

Question 90

Bivalents or Tetrads are formed in

A	Diakinesis
B	Zygotene
C	Pachytene
D	Leptotene

Question 91

The chromosomes became visible, shorter and thick in

A	Diplotene
B	Leptotene
C	Pachytene
D	Zygotene

Question 92

The cell death due to tissue damage is called

A	Apoptosis
B	Fatigue
C	Cramp
D	Necrosis

Question 93

Inter phase period can be divided into

A	Gl, G2, G3
B	Gl, G2, F1
C	G,, S. G2
D	S1. G. S

Question 94

For the formation of fragmoplast, the vesicles originate from:

A	Mitochondria
B	Golgi complex
C	Chloroplast
D	Endoplasmic reticulums

Question 95

The difference in the division of a plant cell and animal cell is:

A	Cell plate formation
B	Coiling of the chromosomes
C	Spindle formation
D	Movement of chromosomes from the equatorial plane

Question 96

The significance of mitosis is that it can:

A	Occur under adverse conditions
B	Take place in all parts
C	Produce idential cells
D	Be completed very rapidly

Question 97

It is the period of extensive metabolic activity:

A	G2
B	S
C	G1
D	G0

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Biology Chapter No. 7 CELL CYCLE 2nd Year Online MCQs

Biology
CELL CYCLE
Chapter No. 7
Second Year
Multiple Choice Questions
Note : All MCQ’s selected in this test are from OLD F.Sc. board , UHS and PMC(Pakistan Medical Commission) Islamabad Papers.

GRADE 12 - BIOLOGY CHAPTER NO.7 CELL CYCLE

Explanation and Solution of all past papers in this online Practice Test with Examples leads the Candidates towards Success in Interviews.

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Biology CELL CYCLEChapter No. 7Second Year Multiple Choice QuestionsNote : All MCQ’s selected in this test are from OLD F.Sc. board , UHS and PMC(Pakistan Medical Commission) Islamabad Papers.

GRADE 12 - BIOLOGY CHAPTER NO.7 CELL CYCLE

Explanation and Solution of all past papers in this online Practice Test with Examples leads the Candidates towards Success in Interviews.

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Biology
CELL CYCLE
Chapter No. 7
Second Year
Multiple Choice Questions
Note : All MCQ’s selected in this test are from OLD F.Sc. board , UHS and PMC(Pakistan Medical Commission) Islamabad Papers.