- 1(current)
Q. No.Identify the incorrect statement regarding endospores in bacteria:
| 1. | An endospore is a dormant, tough, and non-reproductive structure produced by some bacteria and archaea. |
| 2. | Endospore formation is usually triggered by a lack of nutrients, and usually occurs in gram-positive bacteria. |
| 3. | The endospore consists of the bacterium's DNA, ribosomes and large amounts of dipicolinic acid. |
| 4. | When favorable conditions return, a large number of cells are produced as a result of endospore germination. |
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
Level 3: 35%-60%
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A genophore is the DNA of a prokaryote. Though it is commonly referred to as a prokaryotic chromosome, the term “chromosome” is misleading, because:
| 1. | the genophore lacks chromatin |
| 2. | the genophore is circular rather than linear |
| 3. | the genophore replicates without telomeres |
| 4. | the genophore is not enclosed in a nuclear membrane |
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
Level 3: 35%-60%
Consider the given two statements:
| Statements I | Carboxysomes are thought to have evolved as a consequence of the increase in oxygen concentration in the ancient atmosphere |
| Statements II | Oxygen is a competing substrate to carbon dioxide in the RuBisCO reaction |
| 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 |
Subtopic: Prokaryotic Cell Organisation | Details of Prokaryotic Cell Structure |
Level 3: 35%-60%
- 1(current)
Q. No.
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