Bacteria Morphology problems
- 1. Which of the following may be most likely to be missing from a gram-positive bacterium?
Options- A. Penicillin binding protein
- B. Peptidoglycan
- C. Lipopolysaccharide
- D. Phospholipid bilayer membrane Discuss
Correct Answer: Lipopolysaccharide
- 2. The arrangement, in which flagella are distributed all round the bacterial cell, is known as
Options- A. lophotrichous
- B. amphitrichous
- C. peritrichous
- D. monotrichous Discuss
Correct Answer: peritrichous
- 3. Flagella move the cell by
Options- A. many flagella beating in a synchronous, whip-like motion
- B. an individual flagellum beating in a whip-like motion
- C. spinning like a propeller
- D. attaching to nearby particles and contracting Discuss
Correct Answer: spinning like a propeller
- 4. Single or clusters of flagella at both poles is known as
Options- A. monotrichous
- B. petritrichous
- C. amphitrichous
- D. none of these Discuss
Correct Answer: amphitrichous
- 5. Which of the following is not true about peptidoglycan?
Options- A. It is a polymer consisting of N-acetyl glucosamine, N-acetyl muramic acid and amino acids (alanine, lysine, etc.)
- B. It is present in prokaryotic cell wall
- C. It occurs in the form of a bag shaped macro molecule surrounding the cytoplasm membrane
- D. None of the above Discuss
Correct Answer: None of the above
- 6. In eukaryotic cells, ribosomes are
Options- A. 70S
- B. 60S
- C. 80S
- D. Not specific Discuss
Correct Answer: 80S
- 7. The location where the bacterial chromosome concentrates is called
Options- A. nucleus
- B. nuclein
- C. nucleoid
- D. nucleose Discuss
Correct Answer: nucleoid
- 8. Cytoplasmic inclusions include
Options- A. ribosomes
- B. mesosomes
- C. fat globules
- D. all of these Discuss
Correct Answer: all of these
- 9. The cooci which mostly occur in single or pairs are
Options- A. Streptococci
- B. Diplococci
- C. Tetracocci
- D. None of these Discuss
Correct Answer: Diplococci
- 10. Gram positive cells have a
Options- A. second outer membrane that helps to retain the crystal violet stain
- B. multiple layer of peptidoglycan that helps to retain the crystal violet stain
- C. thick capsule that traps the crystal violet stain
- D. periplasmic space that traps the crystal violet Discuss
Correct Answer: multiple layer of peptidoglycan that helps to retain the crystal violet stain
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