Q. No.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
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. |
© 2024 GoodEd Technologies Pvt. Ltd.