Mark the following statements as true (T) or false (F) and select the correct option :

A. Acrocentric chromosome appears J-shaped during anaphase.

B. Centromere holds two chromatids together.

C. Outer membrane of nucleus is connected with SER only.

A B C
1. T F F
2. F T T
3. T T F
4. F F T
Subtopic:  Nucleus | Nucleus: Chromosomes |
 80%
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In the following diagram, select the part correctly matched with its character or function.

1.  A - The passage through the movement of RNA and protein molecules take place in both directions

2.  B - Frequently observed in cells actively involved in lipids synthesis and secretion 

3.  C - Membrane-bound structures composed of deoxyribonucleic acid and proteins

4.  D - Provide surface for DNA and protein synthesis

 

 

Subtopic:  Nucleus | Endomembrane System (Endoplasmic Reticulum) |
 81%
From NCERT
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Consider the following statements:

I. Nucleoplasm contains nucleolus and chromatin
II. The nucleolus is separated from the rest of the nucleoplasm by a membrane
III. The nucleolus is produced from and associated with a specific nucleolar organizing region of certain chromosomes
IV. The nucleolus is the site of rRNA synthesis.

Which of the above statements are true?

1. I, II, III and IV

2. I, II and IV

3. I, III and IV

4. II, III and IV

Subtopic:  Nucleus |
 74%
From NCERT
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