MCQs on Morphology of a Bacteria
1. Which of this bacteria is resistant to penicillin as it lacks a cell wall?
A. Spirochetes
B. Cyanobacteria
C. Mycoplasmas
D. Bdellovibrios
Answer:: C.
2. What is a cluster of polar flagella called?
A. Petritrichous
B. Monotrichous
C. Amphitrichous
D. Lophotrichous
Answer:: D.
3. Which of these is a cocci occurring in single or pairs?
A. Diplococci
B.Streptococci
C. Tetracocci
D. None of the above
Answer:: A.
4. Flagella in bacteria enable them to
A. reproduce
B. locomote
C. Thrive in nutrient agar
D. Adhere to tissue surfaces
Answer:: (b)
5. This about cell wall of gram-positive bacteria is true
A. cell wall comprises of many layers
B. the cell wall is thicker than the associated gram-negative bacteria
C. Cell wall comprises of teichoic acids
D. All of the above
Answer:: D.
6. What is Chemotaxis?
A. Swimming towards a bacteria
B. Swimming away of a bacteria
C. In the presence of a chemical compound, swimming towards or away of a bacteria
D. None of these
Answer:: C.
7. Which of these is exposed on the outer surface of a gram-negative bacterium?
A. Braun lipoprotein
B. O-antigen of lipopolysaccharide (LPS)
C. Polysaccharide portion of lipoteichoic acid (LTA)
D. Electron transport system components
Answer:: (b)
8. The covalent bond which links the cell walls of gram-positive bacteria containing two modified sugars – N – acetylmuramic acid (NAM) and N-acetyl glucosamine (NAG) is
A. glycosidic bond
B.1,4-glycosidic bond
C. 1,6-glycosidic bond
D. glycosidic bond
Answer:: (b)
9. Which one of these has a Chinese letter arrangement?
A. Clostridium tetani
B.Mycobacterium tuberculosis
C. Bacillus anthracis
D. Corynebacterium diphtheriae
Answer:: D.
10. This is analogous to mesosomes of bacteria
A. Golgi apparatus of eukaryotes
B. Lysosomes of eukaryotes
C. Mitochondria of eukaryotes
D. None of the above
Answer:: C.
