Q 1. Among these bacterial components, which is least likely to contain valuable antigens?
1. Cell wall
2. Flagella
3. Ribosomes
4. Capsule
Answer- c, Ribosomes
Q 2. N-acetylmuramic acid and N-acetylglucosamine can be found in which of the following structures?
1. Mycoplasmas
2. Amoeba
3. Ecoli
4. Spheroplast
Answer- c, Ecoli
Q 3. Gram-negative bacteria are associated with endotoxin because of
1. Steroids
2. Peptidoglycan
3. Lipopolysaccharides
4. Polypeptide
Answer- c, Lipopolysaccharides
Q 4. Is there a biocontrol agent that can be used to treat plant diseases?
1. Lactobacillus
2. Trichoderma
3. Chlorella
4. Anabaena
Answer- b, Trichoderma
Q 5. In an integrated pest management program, a biocontrol agent should be….
1. species-specific and symbiotic
2. free-living and broad-spectrum
3. narrow spectrum and symbiotic
4. species-specific and inactive on non-target organisms
Answer- d, species-specific and inactive on non-target organisms
Q 6. Among the following pairs of microbes, which pair contains both microbes that can be used as biofertilizers?
1. Aspergillus and Rhizopus
2. Rhizobium and Rhizopus
3. Cyanobacteria and Rhizobium
4. Aspergillus and Cyanobacteria
Answer- c, Cyanobacteria and Rhizobium
Q 7. Which is a gram-positive eubacterium?
1. Actinomyces
2. Clostridium
3. Rhizobium
4. Clostridium, Actinomyces
Answer- d, Clostridium, Actinomyces
Q 8. Which of the following microorganisms does not cause urinary tract infections?
1. Proteus mirabilis
2. Escherichia coli
3. Klebsiella pneumoniae
4. Bacteroides fragilis
Answer- d, Bacteroides fragilis
Q 9. Which of the following is diagnosed by serologic means?
1. Actinomycosis
2. Q-fever
3. Pulmonary tuberculosis
4. Gonorrhea
Answer- b, Q – fever
Q 10. Diarrhoea is not caused by
1. Shigella dysenteriae
2. Streptococcus pyogenes
3. Clostridium difficile
4. Salmonella enteriditis
Answer- b, Streptococcus pyogenes.
Q 11._________does not correspond to an ammonia-oxidizing bacteria.
1. Nitrosococcus Oceanus
2. Nitrospina Gracilis
3. Nitrosomonas Europaea
4. Nitrosovibrio Tenuis
Answer- d, Nitrosovibrio Tenuis
Q 12. A microorganism that is eliminated in canned foods is.
1. Clostridium botulinum
2. Lactobacillus
3. Mycobacterium tuberculosis
4. Coxiella burnetii
Answer- a, Clostridium botulinum.
Q 13. Which one of the following corresponds to the bacteria that has clusters of flagella at both the poles of cells?
1. Lophotrichous
2. Peritrichous
3. Amphitrichous
4. Monotrichous
Answer- c, Amphitrichous.
Q 14. ______is a Spirochetes.
1. Treponema Pallidum
2. Streptomyces sp.
3. Corynebacterium Diphtheriae
4. Spirillum Volutans
Answer- a, Treponema Pallidum.
Q 15. Which of the following types of microorganisms is photosynthetic?
1. yeast
2. virus
3. helminth
4. alga
Answer- d, Alga