Which organelle is extensive and continuous with the outer membrane of the nucleus?
1. Golgi complex
2. ER
3. Vacuole
4. Lysosome
A nuclear pore allows
1. | Unidirectional movement of DNA |
2. | RNA movement only |
3. | RNA and protein movement |
4. | Protein movement only |
Ribosomal RNA is actively synthesized in
1. lysosomes
2. nucleolus
3. nucleoplasm
4. ribosomes
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
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
Non-membranous nucleoplasmic structures in the nucleus, are the sites for active synthesis of:
1. | protein | 2. | mRNA |
3. | rRNA | 4. | tRNA |
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 |
The spherical structures present in the nucleoplasm
1. | Has contents continuous 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 |
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
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. |