Bacteria Morphology problems
- 1. The common word for bacteria which are straight rod in shape is
Options- A. cooci
- B. bacilli
- C. spirilla
- D. pleomorphic Discuss
Correct Answer: bacilli
- 2. The cell walls of Gram positive bacteria contain two modified sugar, viz. N- acetylgucosamine (NAG) and N- acetylmuramic acid (NAM). They are covalently linked by
Options- A. ?- 1,4-glycosidic bond
- B. ?-1,6-glycosidic bond
- C. ?- 1,6-glycosidic bond
- D. ?- 1,4-glycosidic bond Discuss
Correct Answer: ?- 1,4-glycosidic bond
- 3. Chemically the capsule may be
Options- A. polypeptide
- B. polysaccharide
- C. either (a) or (b)
- D. none of these Discuss
Correct Answer: either (a) or (b)
- 4. The cell wall of
Options- A. gram-positive bacteria are thicker than gram-negative bacteria
- B. gram-negative bacteria are thicker than gram-positive bacteria
- C. both have same thickness but composition is different
- D. none of these Discuss
Correct Answer: gram-positive bacteria are thicker than gram-negative bacteria
- 5. The cell walls of many gram positive bacteria can be easily destroyed by the enzyme known as
Options- A. lipase
- B. lysozyme
- C. pectinase
- D. peroxidase Discuss
Correct Answer: lysozyme
- 6. A single polar flagella is known as
Options- A. monotrichous
- B. lophotrichous
- C. amphitrichous
- D. none of these Discuss
Correct Answer: monotrichous
- 7. The protein from which hook and filaments of flagella are composed of, is
Options- A. keratin
- B. flagellin
- C. gelatin
- D. casein Discuss
Correct Answer: flagellin
- 8. Peptidoglycan is also known as
Options- A. N-acetyl muramic acid
- B. murein mucopeptide
- C. N acetylglucosamine
- D. mesodiaminopimetic acid Discuss
Correct Answer: murein mucopeptide
- 9. Which of the following is true about cell wall of gram-positive bacteria?
Options- A. It consists of multiple layers
- B. It is thicker than that associated with gram-negative bacteria
- C. It contains teichoic acids
- D. All of these Discuss
Correct Answer: All of these
- 10. Periplasm is
Options- A. the area between the inner and outer membranes of gram-negative bacteria
- B. the area between the inner and outer membranes of Gram-positive bacteria
- C. the interior portion of mitochondria
- D. the area outside the cell membrane that is influenced by the polymers Discuss
Correct Answer: the area between the inner and outer membranes of gram-negative bacteria
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