Q. No.Which of the following do not belong to domain Archaea?
| 1. | bacteria that produce methane from carbon dioxide and hydrogen |
| 2. | thermophiles |
| 3. | halophiles |
| 4. | bacteriophages |
Subtopic: Kingdom Monera: Bacterial Classification | Virus, Viroids & Prions |
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In plants the viral diseases symptoms are called:
1. Mosaic formation
2. leaf rolling and curling
3. Yellowing, vein clearing, dwarfing, and stunted growth
4. All of these
1. Mosaic formation
2. leaf rolling and curling
3. Yellowing, vein clearing, dwarfing, and stunted growth
4. All of these
Subtopic: Virus, Viroids & Prions |
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A bacteriophage is a
| 1. | virus that parasitizes a bacterium. |
| 2. | bacterium with a lysed membrane. |
| 3. | tiny bacterium. |
| 4. | unusually large bacterium |
Subtopic: Virus, Viroids & Prions |
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Given below is the diagram of a bacteriophage. In which one of the options, all the four parts A, B, C and D are correct?
| A | B | C | D | |
| 1. | Sheath | Collar | Head | Tail fibres |
| 2. | Head | Sheath | Collar | Tail fibres |
| 3. | Collar | Tail fibres | Head | Sheath |
| 4. | Tail fibres | Head | Sheath | Collar |
Subtopic: Virus, Viroids & Prions |
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AIPMT - 2010
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Lichens, viruses, viroids and prions have been included in the kingdom –
| 1. | Monera | 2. | Protista |
| 3. | Plantae | 4. | None of the above |
Subtopic: Virus, Viroids & Prions |
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Which of the following statement is incorrect?
| 1. | Viroids are smaller than viruses. |
| 2. | Viroid was found to be a free RNA. |
| 3. | The RNA of the viroid is of high molecular weight. |
| 4. | In 1971, T.O. Diener discovered it. |
Subtopic: Virus, Viroids & Prions |
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Subtopic: Virus, Viroids & Prions |
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Cr-Jacob disease [CJD] in humans is caused by an infection due to:
1. dsDNA virus
2. Viroid
3. ssRNA virus
4. Prion
1. dsDNA virus
2. Viroid
3. ssRNA virus
4. Prion
Subtopic: Virus, Viroids & Prions |
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Match each item in Column I with one item in Column II and select the correct option from the codes given:
|
COLUMN I |
|
COLUMN II |
|
|
A |
Mosaicism in plants |
P |
Prion |
|
B |
CJD in humans |
Q |
Sporozoan |
|
C |
Smut in wheat |
R |
Virus |
|
D |
Malaria in humans |
S |
Fungus |
Codes
|
|
A |
B |
C |
D |
|
1. |
P |
Q |
R |
S |
|
2. |
R |
P |
S |
Q |
|
3. |
Q |
R |
P |
S |
|
4. |
S |
P |
Q |
R |
Subtopic: Virus, Viroids & Prions |
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Which of the following disease is not caused by Prions?
| 1. | Bovine spongiform encephalopathy (BSE) in cattles |
| 2. | Cr–Jacob disease (CJD) in humans. |
| 3. | Mad cow disease in cattle |
| 4. | Potato Spindle Tuber disease |
Subtopic: Virus, Viroids & Prions |
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Level 1: 80%+
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