Which organelle is extensive and continuous with the outer membrane of the nucleus?
1. Golgi complex
2. ER
3. Vacuole
4. Lysosome

Subtopic:  Nucleus |
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A nuclear pore allows

1.  Unidirectional movement of DNA

2.  RNA movement only

3.  RNA and protein movement

4.  Protein movement only 

Subtopic:  Nucleus |
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Ribosomal RNA is actively synthesized in

1. lysosomes

2. nucleolus

3. nucleoplasm

4. ribosomes

Subtopic:  Nucleus |
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The outer membrane of the nucleus:

I. is continuous with the Endoplasmic reticulum

II. does not bear ribosomes.

1. Only I is correct

2. Only II is correct

3. Both I and II are correct

4. Both I and II are incorrect

Subtopic:  Nucleus |
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The given diagram represents the four different structures which one of these is correct containing material and function:-

 

 

 

 

a.

Nucleolus

NOR

Synthesis of rRNA for formation of 80 S Ribosome

b.

Nuclear Pore

Chromatin

Exchange material between cytoplasm and nucleoplasm

c.

Nucleoplasm Protein

Nucleoplasmin

Formation of nuclear matrix

d.

Nuclear membrane

Ribosome

Cellulose synthesis

1. A

2. B

3. C

4. D

Subtopic:  Nucleus |
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Non-membranous nucleoplasmic structures in nucleus are the site for active synthesis of

1. protein synthesis

2. mRNA

3. rRNA

4. tRNA

 

Subtopic:  Nucleus |
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The content of the nucleolus is continuous with nucleoplasm

1.  Through microtubules

2.  Through nuclear pores

3.  Due to lack of membrane

4.  Due to presence of channels in membrane 

Subtopic:  Nucleus |
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The spherical structures present in the nucleoplasm

1.  Has contents continous with the rest of the nucleoplasm.

2.  Is a membrane bound structure

3.  Is a site of active messenger RNA synthesis

4.  Are smaller and more numerous in cells actively carrying out protein synthesis 

Subtopic:  Nucleus |
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Read the statements carefully and select the set of correct statements

a.  Palade particles are found in all cellular organisms

b.  A membrane bound structure in nucleus is the site of ribosomal RNA synthesis

c.  The mitochondria can be divide meiotically to produce daughter mitochondria

d.  Vacuoles can occupy about 90% of the volume of a plant cell

1.  All except b

2.  a & c

3,  b & d

4.  a & d 

Subtopic:  Mitochondria | Nucleus | Vacuole |
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Find the incorrect statement:

1. Plastids found in plant cells and in euglenoids.

2. Golgi apparatus is site of formation of glycoproteins and glycolipids.

3. Nucleus during interphase has highly extended and elaborate nucleoprotein fibers.

4. Centriole Microtubular organization is referred to as the 9 + 2 and it forms basal body of cilia and flagella.

Subtopic:  Plastids | Golgi Apparatus | Nucleus | Cilia & Flagella |
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