1 - A cell cycle has which of the following phases:
All of these
2 - A gamete has:
x number of chromosomes
3 - A rough idea of cell division was given by:
Hofmeister
4 - A zygote has:
2 x number of chromosomes
5 - Anaphase occurs in:
Both mitosis and meiosis
6 - Arrangement of chromosomes at equatorial place of spindle occur during:
Metaphase
7 - Blueprint of heredity in chromosomes is:
DNA
8 - Cell division in animal cells occur by:
All of these methods
9 - Cell division in eukaryotic cells involves:
Both (a) & (b)
10 - Cell division in plants was described first by:
Strausbeger
11 - Cell division takes place in which of these phases of cell cycle:
D - phase
12 - Chromosomes are composed of:
DNA + Proteins
13 - Chromosomes during metaphase:
Occupy equatorial position
14 - Commencement of diploid phase in the life cycle of an animal is marked by:
Zygote
15 - Continuous fibres in spindle are those which connect:
One centriole with other and attached pole to pole
16 - Daughter cells of meiotic division are haploid which shows:
That genes are located on chromosomes
17 - Division of centromeres during mitosis occurs during:
Prophase
18 - Division of cytoplasm is termed:
Cytokinesis
19 - DNA duplication is:
Semiconservative
20 - DNA polymerase is associated with:
Process of DNA duplication
21 - Duration of G1 - phase in cell cycle is:
10 hours
22 - Duration of S-phase of cell cycle is:
8 hours
23 - During amitotic cell division in animals there is:
Only elongation of nucleus and subsequent breaking into two daughters
24 - During G1 phase of cell cycle there is:
Synthesis of substances essential for biosynthesis of DNA
25 - During meiotic cell division the centromeres of chromosomes occurs during:
Anaphase of second meiotic division
26 - First stage of cell division is marked by:
Prophase
27 - For mitotic division the DNA is:
Replicated
28 - G2 - phase of cell cycle lasts for about:
5 hours
29 - How many mitotic divisions are required to make 256 daughter nuclei:
8
30 - Importance of cell division in heredity was emphasized by:
Sutton
31 - In a cell the number of chromosomes after first meiotic division is 46, the number of chromosomes in its daughters after completion of the process will be:
Same
32 - In a cell, the cell division occurs when:
It has attained optimum growth
33 - Intact nuclear membrane, chromatin fibres, double DNA etc, characterize which of these phases:
Interphase
34 - Interphase is constituted in cell cycle by:
All of these
35 - Meiosis differs from mitosis because in it:
Chromosomal number is halved
36 - Meiosis is the only division in which:
Chromosomal number is reduced to half
37 - Meiosis was termed by:
J.B. Farmer and Moore
38 - Mitosis is a process of cell division during which there is:
Distribution of same number of chromosomes in daughter cells
39 - Mitosis is a regular feature of cells but a sudden as well rapid mitosis leads to formation of:
Cancer
40 - Mitosis occurs:
Somatic cells only
41 - Mitotic cell division occurs in:
Somatic cells
42 - Mitotic cell division results in the:
No change in chromosomal number
43 - Mitotic spindle is formed in:
Both mitosis and meiosis
44 - Most important significance of mitosis lies in which of these:
It regulates karyo-cytoplasmic relation
45 - Movement of chromosomes during anphase is:
Dependent on association of spindle fibres with kinetochore
46 - M-phase of cell cycle lasts for about:
1 hour
47 - Nucleic acid forming chromosomes is:
DNA
48 - Nucleous originates from:
Chromosomes
49 - Number of chromosomes in human karyotype is:
46
50 - Process of meiosis is seen to occur when a cell:
Has to undergo sexual reproduction
51 - Prophase in mitotic division is characterized by which of these events:
All of these
52 - Replacement and repair of body is done through which of these cell divisions:
Mitosis
53 - S - phase of cell cycle is characterized by:
Duplication of DNA
54 - Separation of chromatids and their movement to opposite poles of the spindle occurs in which of these:
Anaphase
55 - Some microtubules in spindle which remain attached to spindle and also to the poles are called:
Interchromosomal fibres
56 - Some of microtubules of spindle attaching to centromeres of chromosomes are called:
Chromosomal fibres
57 - Spindle is formed during cell division by:
Both (a) & (b)
58 - Strausberger observed
Cell division in plants
59 - Structure present in chromosomes is:
Centromere
60 - Sutton emphasized:
Importance of cell division in heredity
61 - The correct sequence of various substages in first meiotic prophase is:
Leptonema, zygonema, pachynema, diplonema and diakinesis
62 - The replication of chromosomes occurs in:
Interphase
63 - When during meiotic cell division, chromosomes first appear duplicated, each bivalent is called:
Tetrad
64 - Which of these can best explain the significance of meiosis:
It ensures transmission of same genetic material from generations to generations
65 - Which of these changes mark the tolophase in mitosis:
Both of these changes
66 - Which of these divisions help sex cells to increase in their number:
Mitosis
67 - Which of these divisions helps in asexual reproduction of bacteria:
Mitosis
68 - Which of these divisions in necessary for the growth in the animals:
Meiosis
69 - Which of these marks the beginning of diploid phase in our life cycle:
Zygote
70 - Which of these organelles are not shared by the daughter cells:
Golgicomplex
71 - Which of these plays important role in cell division in animal cell:
Centriole
72 - Who described the cell division first?
Hugo Von Mohl
73 - Who observed first that the reproductive cells have different division than somatic cells?
Weismann
74 - Who used the word karckinecs for cell division?
Hugo Von Mohl
75 - Word mitosis was coined by:
W. Flemmings
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