Hello friends, in today's article we see the MCQ's of Bacterial Growth in microbiology. So let's see one by one MCQ's of Bacterial growth in microbiology
MCQ’s of Bacterial Growth
1. Multiple antibiotic resistance is mediated by
a. Episome
b. Plasmid
c. Colplasmid
d. Both b and c
2. “Antagonism “ is seen in
a. Lag phase
b. Plasmids
c. Log phase
d. None of these
3. the first phase of a growth curve is
a. Log phase
b. Lag phase
c. phase
d. Both a and b
4. In gram positive and gram negative bacteria the electron transport contains
a. Naphthquinone
b. Plastoquinone
c. Ubiquinone
d. Both a and b
5. Growth in a closed system, affected by nutrient limitation and waste product accumulation is called
a. Batch culturing
b. Ascus
c. Fruiting body
d. Sporangiosphore
6. Cells are active and synthesizing new protoplasm. This stage of growth is called
a. Lag phase
b. Stationary phase
c. Log phase
d. All of these
7. Which one of the following tissues can metabolize glucose, fatty acids and ketone bodies for ATP production?
a. Liver
b. Muscle
c. Brain
d. R.B.C
8.
Which one of the following mineral elements play an important role in biological nitrogen fixation
a. Copper
b. Magnesium
c. Zinc
d. Molybdenum
9. Rapid bacterial growth phase is known as
a. Log
b.
Lag
c. Lack
d. None of
these
Read more MCQ's of Microbiology and microscope
10.
Clostridium
welchii spore formation can be induced only on specified media such as
a. Wilson-Blair medium
b. Macconkey medium
c. Ellner medium
d. Thayee-Martion medium
11. Mycotoxins are formed during
the end of
a.
Lag phase
b. Log phase
c. Death phase
d. Stationary phase
12.
Bacteria
which need oxygen for growth are called
a. Thermophilic bacteria
b. Microaerophilic bacteria
c. Facultative anaerobic bacteria
d. Mycobacteria
13. pH required for the growth of bacteria is
a. 6.8 – 7.2
b. 5.6 – 8.2
c. 3.0 – 6.0
d. 8.0 – 14.0
14. Drug resistance in bacteria is mainly determined by factor:
a.
F
b.
R
c. Col
d.
Lysogenic factor
15. The ion that is required
in trace amounts for the growth of bacteria is
a.
Calcium
b.
Magnesium
c. Cobalt
d. Sodium
16. The most important vitamin for the growth of bacteria is
a. B-complex
b. Vitamin A
c. Vitamin D
d. Vitamin C
17. The principle in microbiological assays is
a.
At certain range
the concentration of growth
factor will bear a linear
relationship to the amount of nutrients added
b. Concentration of growth factor have a linear relationship with the growth of the organism
c. Both a and b
d. None of the above
18. If the source
of energy for bacteria is from chemical compounds they are said to be
a. Phototrophs
b. Autotrophs
c. Chemotrophs
d. Chemolithotroph
19. In the synthesis of cell components the
major element required is
a.
Nitrogen
b. Sulphur
c. Carbon
d. Oxygen
20. For the formation of cell-components the
elements required are
a.
Nitrogen
b.
Oxygen
c. Sulphur
d. All
of these
21. For the synthesis of amino acids
cysteine, cystine and methionine
the element required is
a.
Sulphur
b.
b. Oxygen
c. Nitrogen
d.
None of these
22.
Sulphur can be utilized
by bacteria in the
form of
a.
Organic compounds
b. Inorganic compounds
c. Elemental compounds
d. All
of the above
23.
Phosphorous
is an essential component of
a. Nucleotides
b. Nucleic acids
c. Phospholipids and Heichoic acids
d.
All
the above
24. Trace elements are
a.
Zn+2,
Cu+2, Mn+2
b.
MO6+,
Ni2+, B3+ and CO2+
c. Both
a and b
d. None of these
25. Most bacteria do not require the ion
a.
Mg2+
b.
Ca2+
c. Na+
d. Fe+2
26. Vitamin function as
a. Co-enzymes
b. Co-melecules
c. Building blocks of cell
d.
None of these
27.
The vitamin required for Lactobacillus species is
a.
Riboflavin
b. Niacin
c. Pyridoxine
d. Folic acid
28. Vitamin K is necessary for the species
a.
Lactobacillus spp.
b. Bacillus anthracis
c. Bacteroides melaninogenicus
d. All
of these
29.
The
bacteria which are able to grow at 0°C but which grow at 20°C to 30°C, are
known as
a. Psychrophiles
b. Facultative psychrophiles
c. Average psychrophiles
d. Mesophiles
30. Radical shifts can be prevented by adding
a.
Acids
b.
Alkali
c. Buffer
d. None of these
31. The orderly increase in the quantity of all the cellular components is known as
a. Reproduction
b. Growth
c. Binary fission
d. None of these
32. The most common mode of cell division in bacteria is
a. Binary
fission
b. Transverse binary fission
c. Longitudinal binary fission
d. None
of these
33. How much time a bacterium take for the complete duplication?
a.
30 min.
b. 10 min.
c. 20 min.
d. 25 min.
34. The generation time is
a. The time required for the cell to divide
b. The total division of the cell during its life time
c. The total no.of cells formed
d. None
of these
35. In bacteria, the increase in population is in the manner
a.
Geometric progression
b. Multiplication
c. Doubling
d. None
of these
36. Physiologically the cells are active and are synthesizing
new protoplasm in which stage
of the growth in bacteria
a.
Log phase
b. Lag phase
c. Stationary phase
d. None of these
37. The most active stage in the sigmoid
curve of bacteria in which maximum growth is attained
a.
Lag phase
b. Stationary phase
c. Decline phase
d. Log phase
38. Log-phase is also known as
a.
Death phase
b. Exponential phase
c. Lag-phase
d. None
39.
The no. of generations per hour in a bac- teria is
a. Growth rate
b. Generation time
c. Sigmoid curve
d. None of these
40.
In the sigmoid curve (or) growth
curve of bacteria how many
stages are there
a.
3
b. 4
c. 2
d. 5
41.
The
reproduction rate is equal to death rate in which stage
a. Decline phase
b. Stationary phase
c. Lag phase
d. Log phase
42. Minimum growth temperature is
a. The growth of organisms at lowest temperature
b. The lowest temperature at which the microorganisms grow
c. The maximum temperature at which the growth is stable
d.
None of these
43.
Optimum
growth temperature is greater that 45oC is
a.
Mesophiles
b. Thermophiles
c. Psychrophiles
d. None of these
44.
The
organisms which can grow both in presence and absence of oxygen
a.
Aerobes
b. Anaerobes
c. Faculative anaerobes
d.
Strict aerobes
45.
The
organisms which can grow best in the presence of a low concentration of oxygen
a.
Aerophilic
b. Microaerophilic
c. Aerobic
d. Anaerobic
46.
The compound that is added to the medium to absorb oxygen for the creation of anaerobic conditions
a. Sodium Thioglycollate
b. Nitrous acid
c. Citrate
d. None of these
47. The utilization of light energy
to drive the synthesis of ATP is called as
a. Photolysis
b. Photophosphorylation
c. Photosynthesis
d. Respiration
48. During cyclic phosphorylation NADP is formed
or not.
a.
No
NADP formation
b. No NADP utilization
c. NADP is converted into NADPH
d. All
are correct
49. Cyclic phosphorylation is generally present in
a. Cyanobacteria
b. Algae
c. Bacteria
d. Plants
50. Non-cyclic
photophosphorylation is also known as
a. Oxygenic photosynthesis
b. Photosynthesis
c. Anoxygenic photosynthesis
d. Photophosphorylation
51. The number
of ATP molecules formed
during cyclic phosphorylation are
a.
One
b.
Two
c. Four
d. Six
52. Artificial transformation in laboratory is
carried out by treating the cells with
a.
MgCl2
b. Cacl2
c. NaCl
d. HCl
53. The process of formation of mesozygote
is called
a. Meromixis
b.
Exozygote
c. Mitosis
d. Meiosis
54. Which of the following organisms requires tryptophan for growth?
a.
H.influenza
b. Vibrio
c. Gonococci
d. S.typhi
55. Tubercular bacilli grow best in
a.
Absence of O2
b. Presence of CO2
c. Presence of O2
d. None of these
56. Mycotoxins
are formed during
the end of
a.
Lag phase
b. Log phase
c. Death phase
d. Stationary phase
57.
The suitable temperature to transport viral culture is –
a.
30oC
b. b. 5oC
c. 25oC
d. 45oC
e. None of these
58.
Growth
curve does not include following phases of bacteria –
a. Decline phase
b. b. Stationary phase
c. Lag phase
d. Synchronous growth
59.
Bacteria are more sensitive to antibiotics at
which phase of growth curve?
a. Decline phase
b. Stationary phase
c. Lag phase
d. Log phase
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