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Nuclear envelope is a derivative of...

Nuclear envelope is a derivative of

A

SER

B

Membrane of Golgi complex

C

Microtubules

D

RER

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The correct Answer is:
D
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[A] : The nuclear envelope is the derivative of membrane of mitochondria . [R] : Nuclear membrane does not allow free exhange of ions between the nucleus and the cytoplasm .

Nuclear envelope disappears at

Nuclear envelope reappears at

At certain places, the nuclear envelope is interrupted by the presence of nuclear pores which are enclosed by cir- cular structures called as

At a number of places the nuclear envelope is interrupted by minute (A)____ which are formed by the (B)_____ of its two membranes.

A : The complete disintegration of the nuclear envelope marks the start of metaphase. R : Chromosomes are distinct with two chromatids at this stage.

MODERN PUBLICATION-CELL CYCLE AND CELL DIVISION-COMPETITION FILE (OBJECTIVE TYPE QUESTION)(A.MULTIPLE TYPE QUESTIONS (MCQS)):(FROM AIMPT &OTHER COMPETITIVE EXAMINATION)
  1. In 'S' phase of the cell cycle

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  2. The enzyme recombinase is required in which stage of meiosis ?

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  3. Nuclear envelope is a derivative of

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  4. A somatic cell that has just completed the S phase of its cells cycl...

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  5. Arrange the following events of meiosis in correct sequence (a) Cro...

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  6. The number of chromosomes in meiocyte (2n) in apple is

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  7. Some cells in adult animals do not divide. They exit no G, phase and e...

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  8. Which one of the following is the significance of mitosis

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  9. In a typical eukaryotic cell cycle, Gap-I synthesis and Gap-2 are thos...

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  10. Find the correct statement:

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  11. During cell growth, DNA synthesis occurs in:

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  12. Mechanism that causes a gene to move from one linkage group to another...

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  13. When cell has stalled DNA replication fork, which check-point should b...

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  14. Match the stages of meiosis in Column-I to their characteristic featur...

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  15. In meiosis crossing over is initiated at

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  16. Which of the following is not a characteristic feature during mitosis ...

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  17. Spindle fibres attach on to:

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  18. A cell at telophase stage is observed by a student in a plant brought ...

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  19. Which of the following options gives the correct sequence of events du...

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  20. Zygotic meiosis is characteristic of :-

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