Kingdom Prokaryota | Sindh Mdcat Past Paper MCQs | mosaicbro.com
Kingdom Prokaryota | Sindh Mdcat Past Paper MCQs
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Review Answers:
1
The main feature of cell of bacteria and cyanobacteria, which distinguishes them from other organisms, is the absence of distinct membrane bounded (1998)
Correct Answer:C
Explanation:
Prokaryotes like bacteria and cyanobacteria lack a membrane-bound nucleus, which is their defining feature.
2
______ are rod shaped. (1998)
Correct Answer:A
Explanation:
Bacilli are rod-shaped bacteria (e.g., E. coli).
3
Which of the following is not a bacterial disease? (dmc 2006)
Correct Answer:B
Explanation:
Rabies (virus) and polio (virus) are not caused by bacteria.
4
Bacterial pili help in: (dmc 2011)
Correct Answer:B
Explanation:
Pili (sex pili) facilitate conjugation (DNA transfer between bacteria). Flagella are for locomotion.
5
Which structure in bacteria composed of polysaccharides and lipids that prevents bacteria from antibiotics and increases its pathogenicity? (dmc 2007)
Correct Answer:B
Explanation:
The capsule (glycocalyx) protects against phagocytosis and antibiotics.
6
Photosynthetic bacteria use which of the following instead of H2O? (dmc 2007)
Correct Answer:A
Explanation:
Purple sulfur bacteria use H2S (not H2O) as an electron donor in photosynthesis.
7
Which of the following is a bacterial disease: (dmc 2007)
Correct Answer:B
Explanation:
Tetanus is caused by Clostridium tetani (bacterium). Others are viral/protozoan.