Q. No.Which of the following statements is not true for plasma membrane?
1.
It is present in both plant and animal cells
2.
Lipid is present as a bilayer in it
3.
Proteins are present, integrated as well as loosely associated, with the lipid bilayer
4.
Carbohydrate is never found in it
Plastid differs from mitochondria on the basis of one of the following features. Mark the right answer.
1. Presence of two layers of membrane
2. Presence of ribosome
3. Presence of chlorophyll
4. Presence of DNA
Which of the following is not a function of cytoskeleton in a cell?
1. Intercellular transport
2. Maintenance of cell shape and structure
3. Support of the organelle
4. Cell motility
The stain used to visualise mitochondria is
1. Fast green
2. Safranin
3. Acetocarmine
4. Janus green
Which of the following is not a feature of the plasmids?
| 1. | Single – stranded | 2. | Independent replication |
| 3. | Circular structure | 4. | Transferable |
Select the wrong statement.
| 1. | Mycoplasma is a wall-less microorganism |
| 2. | Bacterial cell wall is made up of peptidoglycan |
| 3. | Pili and fimbriae are mainly involved in motility of bacterial cells |
| 4. | Cyanobacteria lack flagellated cells |
Which of the following components provides sticky character to the bacterial cell?
1. Cell wall
2. Nuclear membrane
3. plasma membrane
4. Glycocalyx
The structure that helps in cell wall formation, DNA replication and respiration in bacteria is :
1. Mesosome
2. Chromatophores
3. Pilus
4. Nucleoid
Which of the following statements can explain the fact that many scientists do not consider viruses as living organisms?
| 1. | Metabolism and growth are defining properties of living organisms. |
| 2. | Anything less than a complete structure of a cell does not ensure independent living. |
| 3. | All cells arise from pre-existing cells. |
| 4. | All biochemical reactions are catalyzed by enzymes. |
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