Q. No.Which of the following cell organelles is present in the highest number in secretory cells?
1.
Mitochondria
2.
Golgi complex
3.
Endoplasmic reticulum
4.
Lysosomes
Non-membranous nucleoplasmic structures in the nucleus, are the sites for active synthesis of:
| 1. | protein | 2. | mRNA |
| 3. | rRNA | 4. | tRNA |
Which of the following nucleic acids is present in an organism having 70 S ribosomes only?
1. Single-stranded DNA with a protein coat
2. Double-stranded circular naked DNA
3. Double-stranded DNA enclosed in nuclear membrane
4. Double-stranded circular DNA with histone proteins
Match column I with column II.
| Column I | Column II | ||
| (a) | Golgi apparatus | (i) | Synthesis of protein |
| (b) | Lysosomes | (ii) | Trap waste and excretory products |
| (c) | Vacuoles | (iii) | Formation of glycoproteins and glycolipids |
| (d) | Ribosomes | (iv) | Digesting biomolecules |
Choose the right match from the options given below:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (iv) | (iii) | (i) | (ii) |
| 3. | (iii) | (ii) | (iv) | (i) |
| 4. | (i) | (ii) | (iv) | (iii) |
Membrane-bound space present in plant cell and filled with water, sap and excretory substance is known as
1. Lysosome
2. Endoplasmic reticulum
3. Vacuole
4. Cytoplasm
Packing of substance for export from the cell occurs by the :
1. RER
2. Lysosome
3. Nucleus
4. Golgi body
Eukaryotic cells considered as more efficient than prokaryotic cells, due to -
1. compartmentalisation of cytoplasm
2. Infolding of membrane
3. Presence of cell wall
4. Aerobic respiration
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
Which of the following statements is not correct?
| 1. | Lysosomes are formed by the process of packaging in the endoplasmic reticulum. |
| 2. | Lysosomes have numerous hydrolytic enzymes |
| 3. | The hydrolytic enzyme of lysosomes are active under acidic pH |
| 4. | Lysosomes are membrane bound structure. |
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