Q. No.Cell is the fundamental structural and functional unit of all living organisms. This statement can be best justified by the fact that:
1.
The cells contain nucleic acids that contain genetic information
2.
A large number of organelles present in the cell perform various functions
3.
Anything less than a complete structure of a cell does not ensure independent living
4.
All multi-cellular organisms begin their life as a single celled zygote
Who concluded, based on his studies on plant tissues, that the presence of cell wall is a unique character of plant cells?
| 1. | Matthias Shcleiden | 2. | Theodore Schwann |
| 3. | J. B. S. Haldane | 4. | Rudolph Virchow |
The genomic DNA of a bacterial cell is:
1. circular and located on a single chromosome
2. circular and located on multiple chromosomes
3. linear and located on a single chromosome
4. linear and located on multiple chromosomes
A basal body is a part of bacterial:
| 1. | Inclusion bodies | 2. | Chromosomal DNA |
| 3. | Flagellum | 4. | Plasmid |
Identify the incorrect statement regarding bacterial ribosomes:
1. They are associated with plasma membrane
2. They are 70 S with two subunits being 30 S and 40 S
3. Several ribosomes may attach to a single mRNA
4. They translate the mRNA into proteins
Which of the following is absent in almost all plant cells?
| 1. | Plastid | 2. | Cell wall |
| 3. | A large central vacuole | 4. | Centriole |
The lipid content of the cell membrane mainly consists of:
| 1. | Phosphoglycerides | 2. | Cholesterol |
| 3. | Unsaturated fatty acids | 4. | Lipopolysaccharides |
The approximate percent composition of proteins and lipids in the cell membrane of an erythrocyte is respectively:
| 1. | 52% and 40% | 2. | 40% and 52% |
| 3. | 60% and 40% | 4. | 40% and 60% |
The measure of fluidity of a cell membrane is:
| 1. | the ability of proteins to flip-flop between the two layers of phospholipids |
| 2. | the ability of proteins to move laterally within the membrane |
| 3. | the ability of lipids to flip-flop between the two layers of phospholipids |
| 4. | the ability of lipids to move laterally within the membrane |
Which of the following statements would not be applicable to the rough endoplasmic reticulum in a eukaryotic cell?
| 1. | Frequently observed in cells actively involved in protein synthesis and secretion |
| 2. | Bear ribosomes on their surface |
| 3. | Continuous with the outer membrane of the nucleus |
| 4. | Sites of synthesis of steroidal hormones |
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