A number of organised flattened membranous sacs are called

(1)thylakoids

(2)starch granules

(3)Quantasomes

(4)None of these

Subtopic:  Plastids |
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Chromatin can be stained with

1. Basic dyes

2. neutral dyes

3. acidic dyes

4. Crystal violet

Subtopic:  Nucleus: Chromosomes |
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Chromatin can be observed in

(1)Interphase nucleus

(2)dividing nucleus

(3)Both A and B

(4)Nuclei of any stage

Subtopic:  Nucleus: Chromosomes |
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Through the nuclear pore the movement of _____and ______takes place

(1)RNA and proteins

(2)DNA and RNA

(3)DNA and proteins

(4)RNA and carbohydrates

Subtopic:  Nucleus |
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Nucleus is absent in

1. erythrocytes of mammals

2. sieve tube cells of Vascular plants

3. Both A and B

4. Companion cells of vascular bundle

Subtopic:  Nucleus |
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Which of the following is true about nucleolus?

(1)membrane less structure

(2)active site for rRNA synthesis

(3)numerous in cells which are involved in protein synthesis

(4)All of the above

Subtopic:  Nucleus |
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Which of the following is true about chromosome

1. nucleoprotein

2. 23 pairs in single human diploid cell

3. Contains primary constriction

4. All of these

Subtopic:  Nucleus: Chromosomes |
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On what basis chromosomes have been divided into four classes.

1. position of centromere

2. position of primary constriction

3. number of kinetochores

4. Both A and B

Subtopic:  Nucleus: Chromosomes |
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In which of the chromosomes two equal arms are present

(1)sub-metacentric chromosome

(2)metacentric chromosome

(3)acrocentric chromosome

(4)telocentric chromosome

Subtopic:  Nucleus: Chromosomes |
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Which of the following chromosome is absent in human beings

1. sub-metacentric chromosome

2. metacentric chromosome

3. acrocentric chromosome

4. telocentric chromosome

Subtopic:  Nucleus: Chromosomes |
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