Which one is correct for Gstage?
I. It is a quiescent stage
II. In this phase cell cycle is stopped
III. G0 cells in this stage do not grow or proliferate but metabolically active
IV. G0 cells can divide in response to some stimulus
(1) All are correct                         

(2) I, II, III are correct

(3) I, II are correct                       

(4) Only I and IV are correct

Subtopic:  Intro to Cell Cycle & Interphase |
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Which of the following statements is false?
(1) Mitosis or the equational division is usually restricted to the 2N cells only

(2) In onion 2N = 16

(3) Growth and reproduction are characteristics of cells indeed of all living organism

(4) In plants meristematic tissues show meiosis

Subtopic:  Cell Cycle: Meiosis I |
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At metaphase of mitosis, each chromosome consists of _______ chromatid(s) _______ centromere(s) ________ kinetochore(s) and _______ molecules of DNA:

(1) 2, 1, 2, 2        

(2) 2, 2, 2, 2       

(3) 2, 1, 1, 1                  

(4) 2, 1, 2, 1

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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In human cells chromosomes are:

(1) Always condensed during the entire cell cycle

(2) Different in different tissues

(3) Of the same size and shape

(4) Visible only during mitosis and meiosis

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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In prophase mitosis, which one of the following events occurs in animal cells but not in plant cells?

(1) Centrioles migrate to opposite sides of the nucleus

(2) Homologous chromosomes do not associate

(3) The nuclear envelope (membrane) breaks down

(4) Nucleoli disappear

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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Synaptonemal complex is more conspicious at:

(1) Zygotene        

(2) Pachytene      

(3) Diplotene         

(4) Leptotene

Subtopic:  Cell Cycle: Meiosis I |
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Centrosomes are:

(1) Constricted regions of chromosomes

(2) Regions where microtubules polymerise

(3) Part of Cilia

(4) The central part of the same cell

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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Cellular structures which disappear during late prophase and reappear during telophase are:

(1) Mitochondria and spindle fibres   

(2) Plasma membrane

(3) Nuclear membrane and nucleolus 

(4) Plastid

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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Given:
1. Chromatid                                    2. Monad
3. Dyad                                            4. Daughter chromosome
The correct sequence in cell division is:
(a) 1, 2, 3, 4               (b) 2, 3, 1, 4              (c) 3, 2, 1, 4              (d) 4, 3, 2, 1

Subtopic:  Cell Division: Mitosis (Karyokinesis) |
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Cytokinesis in animal cell takes place by _______; in _______ direction while in plant cell by _______; in _______ direction:

(1) Furrowing, centrifugal, cell plate, centripetal

(2) Furrowing, centripetal, cell plate, Centrifugal

(3) Cell plate, centrifugal, furrowing, centripetal

(4) Cell plate, centripetal, furrowing, centrifugal

Subtopic:  Cell Division: Mitosis (Cytokinesis) |
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