Basic Industrial and Environmental BioTechnology Mid - I, September - 2014

1.__________ is an example of secondary metabolite.
  • organic acid
  • antibiotic
  • alcohol
  • amino acids
Answer: B
2.Citric acid can be used as
  • acidulant
  • chelating agent
  • plasticizer
  • all of the above
Answer: D
3.Pyruvic acid is reduced to lactic acid by the enzyme
  • lactate oxidase
  • lactate dehydrogenase
  • pyruvate dehydrogenase
  • alcohol dehydrogenase
Answer: B
4.In the production of penicillin, corn steep liquor acts as a
  • carbon source
  • nitrogen source
  • mineral source
  • both b and c
Answer: D
5.Most of the streptomycin produced today is in ______________form.
  • mono hydrate streptomycin
  • dihydro streptomycin
  • trihydro streptomycin
  • tetra hydro streptomycin
Answer: B
6.Type II interferons are produced in response to ___________
  • IL – 1 & IL - 2
  • IL - 2 & IL – 12
  • IL – 3 & IL - 10
  • all of the above
Answer: B
7.A genetically engineered microorganism used for expression of hepatitis B surface antigen HBsAg used as a vaccine against hepatitis B is
  • E.coli
  • yeast
  • virus
  • fungi
Answer: B
8.Acid Proteases are mostly produced by ______________
  • fungi
  • bacteria
  • virus
  • algae
Answer: A
9.__________________an antibiotic active against fungi is used to treat skin diseases such as ringworm.
  • streptomycin
  • penicillin
  • griseofulvin
  • bleomycin
Answer: C
10._________ organisms produce some lactic acid , CO2 , ethyl alcohol acetic acid
  • homofermentative
  • heterofermentative
  • acetobacter
  • facultative anaeoobe
Answer: B
11.Vitamin B12 is also called as _____________________
Answer: Cobalamin
12.To obtain alcohol greater than 95 ./. requires special distillation as alchohol forms _______________
Answer: Azeotropic mixture
13.Most commonly employed organism for production of lactic acid is ___________________ and_____________________
Answer: Lactbacillus bulgaricus & Lactobacillus delbruckii
14.______________________ , a derivative of glutamic acid is used as flavouring agent in food industry
Answer: MSG (MonoSodium Glutamate)
15.Streptomycin is obtained from the culture of ____________________
Answer: Streptomyces griseus
16._______________disease is almost eliminated on a world wide scale by vaccination.
Answer: Poliomyelitis
17._____________ are considered as body’s first line of defense against viral infections.
Answer: Interferons
18._______________enzyme digests small fibers raised from the fabric without damaging cotton fabric.
Answer: Cellulases
19.________________ enzymes are always produced in amounts usable by the cell regardless of substrate presence in growth media.
Answer: Constitutive
20.Individuals suffering from diarrhoea, abdominal cramps flatulence on consuming milk is due to_________________
Answer: Lactose intolerance