Micro Organisms problems
- 1. Which of the following organelles contain DNA, divides and possesses some degree of autonomy?
Options- A. Golgi apparatus
- B. Ribosome
- C. Chloroplast
- D. Peroxisomes Discuss
Correct Answer: Chloroplast
- 2. All of the following are features of prokaryotes except
Options- A. nitrogen fixation
- B. photosynthesis
- C. sexual reproduction
- D. locomotion Discuss
Correct Answer: sexual reproduction
- 3. All membranes of free-living organisms have phospholipid bilayers, but exception is
Options- A. bacteria
- B. fungi
- C. archaea
- D. protozoa Discuss
Correct Answer: archaea
- 4. Micro organisms are found in which of the following kingdom of five kingdom concept (Whittaker's classification)?
Options- A. Monera
- B. Protista
- C. Fungi
- D. All of these Discuss
Correct Answer: All of these
- 5. Carl Woese and his colleague are best known for establishing
Options- A. the five kingdom system
- B. the three domain system
- C. the prokaryote-eukaryote system
- D. the plant-animal system Discuss
Correct Answer: the three domain system
- 6. A newly discovered microscopic structure is hypothesized to be a living organism. Which of the following lines of evidence would support the contention that this organism may be alive?
Options- A. It contains DNA
- B. It is made of a single cell
- C. It utilizes energy
- D. All of these Discuss
Correct Answer: It utilizes energy
- 7. The five-kingdom system of classification was set up by
Options- A. Louis Pasteur
- B. Robert Whittaker
- C. Robert Koch
- D. Masaki Ogata Discuss
Correct Answer: Robert Whittaker
- 8. The word cell was first used by
Options- A. Robert Hooke
- B. Theodor Schwann
- C. Louis Pasteur
- D. Ronald Ross Discuss
Correct Answer: Robert Hooke
- 9. Archeal cells usually do not contain peptidoglycan, rather contain pseudo-peptidoglycan which is mainly composed of
Options- A. N-acetylmuramic acid and L-amino acids
- B. N-acetylmuramic acid and D-amino acids
- C. N-acetyltalosaminuronic acid and D-amino acids
- D. N-acetyltalosaminuronic acid and L-amino acids Discuss
Correct Answer: N-acetyltalosaminuronic acid and L-amino acids
- 10. A characteristic of protein synthesis in both the archaea and eukarya is
Options- A. transcription and translation are coupled
- B. translation is inhibited by diphtheria toxin
- C. proteins are synthesized from D-, rather than L-, isomers of amino acids
- D. the initiator tRNA is charged with N-formyl-methionine Discuss
Correct Answer: proteins are synthesized from D-, rather than L-, isomers of amino acids
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