Hello friends, in today's article we see the MCQ's of bacterial nutrition. so let's see one by one mcq's of Bacterial nutrition.
MCQ’s
of Bacterial nutriation
1.
The main product of
glycolysis under aerobic conditions is
a.
Pyruvate
b. Lactate
c. None of these
d. Both a and b
2. The protein moiety of an enzyme is known as
a.
Holo enzyme
b. Apo enzyme
c. Co enzyme
d. Enzyme
3. Yeast extract is an excellent source of
a.
A Vitamin
b. Proteins
c. B Vitamin
d. Carbohydrates
4. Example of anaerobic medium
a. Wilson blair
medium
b. Mac conkey broth
c. Robertson’s cooked meat medium
d. EMB agar
5.
Biological
Oxygen Demand (BOD) is a measure of:
a. Industrial wastes poured into water bodies
b. Extent to which water is polluted with organic compounds
c. Amount of carbon monoxide inseparably combined with haemoglobin
d. Amount of oxygen needed by green plants during night
6.
An
example of competitive inhibition of an enzyme is the inhibition of
a.
Succinic dehydrogenase by malonic
acid
b. Cytochrome oxidase by cyanide
c. Hexokinase by glucose-6-phosphate
d. Carbonic anhydrase by carbon dioxide
7.
The following organisms have been proposed as sources
of single cell
protein
a.
Bacteria
b.
Yeasts
c. Algae
d. All the three
8.
Nitrites are oxidized to
nitrates by a microorganism
a. Nitrosomonas
b. Nitrosococcus
c. Nitrobacter
d. Azatobacter
9.
The
major constituents in agar are
a.
Fats
b.
Aminoacids
c.
Polysaccharides
d. Polypeptides
10.
Match the
following expressions with their respective bacteria A to E:
1.
K = log (a/a –x) x t1 A. Temperature effect
2.
K = Cn t B.
Watson’s expression
3.
K1/K2 =
q(T2-T1) C. Concentration of
bactericide
4.
x2 = 4D t In (mo/m) D. Film coefficient
E.
Fick’s law
Answer:
10. 1.b,2.c,3.a,4.e
11. Name the type
of bacteria which uses Co2 as a sole source of carbon for
growth.
a) Organotrophs
b) Heterotrophs
c) Autotrophs
d) Lithotrophs
12. Name those bacteria which obtain energy from
chemical compounds?
a) Chemotrophs
b) Phototrophs
c) Organotrophs
d) Heterotrophs
13. Name the type of bacteria which uses reduced
inorganic substances as an electron source?
a) Autotrophs
b) Chemotrophs
c) Organotrophs
d) Lithotrophs
Read more MCQ's of Sterilization and culture media
14. Which of the following bacteria does not belong to
photolithoautotrophy nutritional class?
a) Thiomargarita
namibiensis
b) Purple sulfur bacteria
c) Blue-green bacteria
d) Green sulfur bacteria
15. Purple and green non-sulfur bacteria belongs to which
of the following classes?
a) Photolithoautotrophy
b) Photoorganohetrotrophy
c) Chemolithoautotrophy
d) Chemoorganohetrotrophy
16. Nitrifying bacteria belongs to the nutritional class
of_______
a) Chemoorganoautotrophy
b) Photolithoautrophy
c) Chemolithoautotrophy
d) Photoorganohetrotrophy
17. Which of the following species falls under the
category of hydrogen-producing bacteria?
a) Thiobacillus thiooxidans
b) Nitrosomonas europaea
c) Nitrobacter winogradskyi
d) Alkaligenes eutrophus
18. The exact composition of complex media should be
known.
a) True
b) False
19. Which of these is NOT a selective media?
a) Blood agar
b) Eosin methylene blue agar
c) MacConkey agar
d) Mannitol salt agar
20. Name the protein which plays an important role in
cell division?
a) Actin
b) FtsZ
c) HSP
d) HU
21. The organisms which can use reduced inorganic
compounds as electron donors are known as _________
a) chemotrophs
b) organotrophs
c) lithotrophs
d) phototrophs
22. Which of the following is the nutritional
characterization of Escherichia coli?
a) Chemotrophic
b) Organotrophic
c) Autotrophic
d) Chemotrophic,
Organotrophic, Heterotrophic
23. Which of the following amino acids require sulphur
for their synthesis?
a) tryptophan
b) methionine
c) cystine
d) methionine and cystine
24. Phosphorus is essential component of __________
a) teichoic acid
b) nucleotides
c) phospholipids
d) teichoic acid,
nucleotides, phospholipids
25. Which of the following are trace elements?
a) Potassium ion
b) Sodium ion
c) Copper ion
d) Magnesium ion
26. Which of the following ions are cofactors for
various enzymes?
a) Potassium ion
b) Iron ion
c) Magnesium ion and Iron
ion
d) Calcium ion
27. ”Red extreme halophiles”, are members of the
archaebacterial which cannot grow with less than 12 to 15 percent NaCl.
a) True
b) False
28. Which of the following are functions of water in the
culture medium?
a) nutrients must be in aqueous solution
b) cofactor of enzymes
c) provides resistance to sudden transient temperature changes
d) it is a chemical
reactant, nutrients must also be present in aqueous solution and provide resistance to sudden
temperature changes
29. Chromatium okenii uses which of the following
compound as electron donor?
a) Hydrogen sulphide
b) Fatty acids
c) Alcohol
d) Succinate
30.
a) Nitrosomonas sp.
b) Pseudomonas pseudoflava
c) Rhodospirillum rubrum
d) Chromatium okenii
31. Which of the following is not the characteristics of
a growth curve?
a)
Shows development
of microbial population under relatively stable environmental conditions
b)
Plotted with
logarithmic numbers
c)
Graphs numbers
of microbes versus time\
d) Each growth
curve consist of four distinct phages
32. Generation time of E.coli is
a) 20 minutes
b)
20 hours
c)
20 days
d)
200 hours
33. The organisms which optain their energy from
chemicals are designated as
a)
Prototrophs
b) Chemotrophs
c)
Organotrophs
d)
Autotrophs
34. Nutrient content
and biological structure are considered as
a)
Implicit factor
of factor for microbial growth
b) Intrinsic factor
for microbial growth
c)
Processing
factor
d)
None of the
above
35. The organisms which grow best above 45 celcious are
called as
a)
Psychrophilic
b)
Mesosphilic
c)
Thermophilic
d)
Any of the above
36. Implicit factors
a)
Depends on developing
microflora
b)
Can be
synergistic
c) Both a and b
d)
None of these
above
37. Which of the following is used to grow bacterial
cultures continuously?
a) Chemostat
b)
Coulter counter
c)
Hemostat
d)
Petroff-hausser
chamber
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