Q. No.In a comparison of a typical bacterial cell and a typical human cell, which of the following would be higher for a bacterial cell?
1.
Diameter
2.
Surface area
3.
Volume
4.
Surface area to volume ratio
Cytoskeleton elements involved in muscle contraction, cytokinesis and cytoplasmic streaming are:
1. Microfilaments
2. Intermediate filaments
3. Microtubules
4. FTS-Z
Consider the given two statements:
| Statement- I | Lugol's iodine solution is always added after addition of crystal violet in Gram staining. |
| Statement- II | Lugol’s iodine helps in counter-staining, if required. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and are correct but II does not explain I |
| 3. | I is correct and II is incorrect |
| 4. | Both I and II are incorrect |
Glycocalyx:
I. serves to protect the bacterium from harmful phagocytes
II. allow the bacterium to attach itself to inert surfaces
III. prevent desiccation of bacteria
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Most bacteria contain plasmids that often encode for traits that are:
1. advantageous but not essential to their bacterial host
2. advantageous and essential to their bacterial host
3. not advantageous but essential to their bacterial host
4. neither advantageous nor essential to their bacterial host
Consider the given two statements:
| Statement-I | After the application of decolourizer in Gram staining, the Gram negative bacteria do not retain the stain. |
| Statement-II | Gram-negative cells have a thinner peptidoglycan layer that allows the crystal violet to wash out on addition of ethanol. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and are correct but II does not explain I |
| 3. | I is correct and II is incorrect |
| 4. | Both I and II are incorrect |
The largest structures passed through the nuclear pores are:
| 1. | rDNA | 2. | Lamin proteins |
| 3. | mRNA | 4. | Ribosome subunits |
Cytoskeleton elements involved in intracellular transport, the formation of the axoneme of cilia and flagella and the mitotic spindle, are:
1. Microfilaments
2. Intermediate filaments
3. Microtubules
4. FTS-Z
The type of chromosomes not seen in humans are:
1. Metacentric
2. Sub-metacentric
3. Acrocentric
4. Telocentric
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