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

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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.

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

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

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

Question 2

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

A	None
B	spindle
C	aster & spindle
D	aster

Question 3

Cancer is caused mainly by mutation in

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

Question 4

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

A	Telophase
B	Metalphase
C	Prophase
D	Anaphase

Question 5

G1 (Gap I) is the period of:

A	Movement
B	Rest
C	Metabolic Activity
D	Synthesis

Question 6

In human cell, average cell cycle is about:

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

Question 7

The syndrome having trisomy of chromosome number 18 is

A	Down
B	Patau
C	Jacob
D	Edwards

Question 8

Prognmmed and organized process of cell death is also called

A	Cancer
B	Apoptosis
C	Metastasis
D	Necrosis

Question 9

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

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

Question 10

Cancer is caused mainly by mutations in:

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

Question 11

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

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

Question 12

Cytoplasm becomes more viscous during:

A	Telophase
B	Anaphase
C	Metaphase
D	Prophase

Question 13

Decision for division occurs in a cell at:

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

Question 14

Nerve cells and eye lens cells remaining stage for life time

A	S
B	G2
C	G1
D	G0

Question 15

In non-disjunction chromosomes fail to segregate during

A	lnterphase
B	Meta phase
C	Prophase
D	Anaphase

Question 16

Cancer occurs due to error in

A	Budding
B	Binary
C	Meiosis
D	Mitosis

Question 17

Length of cell cycle in yeast cells is:

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

Question 18

The significance of mitosis is that it can:

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

Question 19

Post Mitotic Cell can exit the Cell Cycle during

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

Question 20

Crossing over indicates that chromosomes are:

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

Question 21

Chromosomes can be counted at:

A	Metaphase
B	Prophase
C	Anaphase
D	Telophase

Question 22

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

A	Actin
B	tubulin
C	Myosin
D	Troponin

Question 23

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

A	Zygotenei
B	Leptotene
C	Diplotene
D	liachytene

Question 24

What are the significant happenings of meiosis

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

Question 25

For the formation of fragmoplast, the vesicles originate from:

A	Chloroplast
B	Golgi complex
C	Endoplasmic reticulums
D	Mitochondria

Question 26

Post mitotic cell can exis the cell cycle during phase

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

Question 27

The linear arrangement of genes is evidenced in:

A	Diakinesis
B	Zygotene
C	Leptotene
D	Metaphase

Question 28

The vesicle forming phragmoplast originate during

A	Interphase
B	Prophase
C	Metaphase
D	Telophase

Question 29

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

A	4
B	3
C	6
D	5

Question 30

The sequence in the cell cycle is:

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

Question 31

The cell death due to tissue damage is called

A	Death
B	Apoptosis
C	Necrosis
D	Autophagy

Question 32

Which of the following is true?

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

Question 33

The kinetochore fibres of spindle attach to chromosome at region

A	Chore
B	Centriole
C	Kinetic
D	Kinetochore

Question 34

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

A	XXY
B	XXX
C	XYY
D	XY

Question 35

Mongolism is also known as

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

Question 36

Crossing over occurs during

A	Diplotene
B	Zygotene
C	Leptotene
D	Pachytene

Question 37

Apoptosis is

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

Question 38

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

A	Necrosis
B	Apoptosis
C	Benign
D	Malignant

Question 39

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 40

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

A	prov-ase
B	Metaphase
C	Interphase
D	Telephase

Question 41

Amitotic divisions are usually found in:

A	Eukaryotes
B	Mesokaryotes
C	Prokaryote
D	Prokaryote & Eukaryotes

Question 42

The centrioles lie within the:

A	chromosome
B	nucleosome
C	centrosome
D	nucleus

Question 43

One the following is not included in karyokinesis:

A	Interkinesis
B	Metaphase
C	lnterphase
D	Telophase

Question 44

Down's syndrome in human beings is due to:

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

Question 45

Synapsis occurs during

A	Zygotene
B	Leptotene
C	Pachytene
D	diplotene

Question 46

Cell grows about twice its size during the phase:

A	Anaphase
B	G2
C	G1
D	S

Question 47

The reduction division is also called:

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

Question 48

Karyokinesis involves division of

A	Cells
B	nucleus
C	cell membrane
D	cytoplasm

Question 49

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

A	Pachytene
B	Zygotene
C	Leptotene
D	Diplotene

Question 50

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

A	Telophase
B	Metaphase
C	Prophase
D	Anaphase

Question 51

A female lacking ovaries and germ cells is probably affected with

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

Question 52

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

A	RNA
B	DNA
C	Fats
D	Glycerol

Question 53

The pairing of homologous chromosomes is completed in

A	zygotene
B	leptotene
C	pachytene
D	diplotene

Question 54

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

A	tubulin
B	spindilin & tubulin
C	None
D	spindilin

Question 55

Chromosomal doubling Occurs in

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

Question 56

Meiosis & Mitosis are found in:

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

Question 57

Chromosomes appear inside the nucleus at the time of

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

Question 58

Phragmoplast is formed by vesicles originated from

A	Golgi complex
B	Mitochondria
C	Endoplasmic reticulum
D	Chloroplast

Question 59

Prolonged prophase is characteristic of:

A	Mitosis
B	Amitosis
C	Meiosis
D	Mitosis of cleavage

Question 60

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

A	510
B	9
C	256
D	158

Question 61

Tumors non transferable to other parts are:

A	Beingn
B	Tumors
C	Cancer
D	Malignant

Question 62

Unequal separation of chromosomes is called

A	Metastasis
B	Non-disjunction
C	Separation
D	Disjunction

Question 63

Microtubules are composed of

A	Adrenaline
B	haemoglobin
C	insulin
D	tubulin

Question 64

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

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

Question 65

Molosls is a:

A	Homotypic division
B	Equatorial division
C	Reduction division
D	None

Question 66

Bivalents or Tetrads are formed in

A	Leptotene
B	Zygotene
C	Pachytene
D	Diakinesis

Question 67

Full cell cycle in yeast cells has length of:

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

Question 68

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	budding
B	parthenogenesis
C	mitosis
D	meiosis

Question 69

Cell cycle is:

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

Question 70

Chromatin network is visible during

A	interphase
B	metaphase
C	Anaphase
D	prophase

Question 71

The Turner syndrome is due to:

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

Question 72

Duplication of Nuclear material in the cell initiates the phase:

A	G1
B	S
C	G2
D	GO

Question 73

The death of cell due to tissue damage is called

A	apoptosis
B	metastsis
C	necrosis
D	Phagocytosis

Question 74

Synapsis takes place in

A	Leptotene
B	Pachytene
C	. Zygotene
D	Anaphase

Question 75

Protein sontlal for chromatin formation:

A	I listone
B	Myosin
C	Actin
D	Tubulin

Question 76

Karyokinesis involves division of Nucleus and Cytokinesis refers to:

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

Question 77

Chiasma are most appropriately observed in meiosis during:

A	Pachytene
B	Metaphase II
C	Diakinesis
D	Diplotene

Question 78

Pairing of homologous chromosomes is called as

A	(0) tetrad
B	synapsis
C	synapse
D	bivalent

Question 79

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

A	Golgi apparatus
B	Microtubules
C	Microfilaments
D	ER

Question 80

Cell Death due to tissue damage is called

A	Necrosis
B	Metastasis
C	Apoptosis
D	Suicide

Question 81

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

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

Question 82

The paired chromosomes repel each other and begin to separate in

A	Diplotene
B	Leptotene
C	Zygotene
D	Pachytene

Question 83

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

A	Apoptosis
B	Epigenesis
C	Necrosis
D	Metastasis

Question 84

The chromosomes became visible, shorter and thick in

A	Zygotene
B	Leptotene
C	Pachytene
D	Diplotene

Question 85

Pairing of homologous chromosomes for tetrad formation starts at

A	Zygotne
B	Leptotene
C	Pachytene
D	Diplotene

Question 86

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

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

Question 87

Inter phase period can be divided into

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

Question 88

During cell division the nuclear division is called

A	Karyokinesis
B	Plasmolysis
C	Cytokinesis
D	Karyotype

Question 89

Meiosis generally takes place in plants during formation of

A	Gametes
B	Zygote
C	Spores
D	Embryo

Question 90

The phragmoplast is organized:

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

Question 91

The pairing of homologous chromosomes is completed in:

A	Diplotene
B	Zygotene
C	Pachytene
D	Lepotene

Question 92

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

A	chromatid
B	cross over
C	tatrad
D	chiasmata

Question 93

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

A	Paqhytene
B	Leptotene
C	Diplotene
D	Zygotene

Question 94

Which of the following is not a divisional stage?

A	Telophase
B	interphase
C	Prophase
D	Metaphase

Question 95

The cell death due to tissue damage is called

A	Fatigue
B	Necrosis
C	Cramp
D	Apoptosis

Question 96

The main significance of mitosis is that:

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

Question 97

It is the period of extensive metabolic activity:

A	S
B	G2
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.

Features:

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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.

Features:

Related posts

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.