Which of the following is used to grow bacterial culture continuously?
Anonymous Quiz
25%
Chemostat
17%
Hemostat
36%
Coulter-Counter
22%
Turbidostat
👍2
Which of the following is an indirect method for measuring bacterial growth?
Anonymous Quiz
19%
Cell count
16%
Cell mass
11%
Cell activity
55%
Both Cell mass and Cell activity
👍1
Which of the following is a direct measurement of growth?
Anonymous Quiz
10%
Determination of nitrogen content
23%
Turbidimetric methods
30%
Determination of Dry weight of cells
37%
Measurement of a specific chemical change produced on a constituent of the medium
👍4
Which of the following method is used for enumeration of bacteria in vaccines and cultures?
Anonymous Quiz
21%
Microscopic Count
24%
Membrane filter
33%
Plate count
22%
Dry weight determination
🔥1
Which of the following is not a physical method for selection of pure culture?
Anonymous Quiz
24%
Heat treatment
23%
pH of the media
28%
Cell size and motility
24%
Use of dilute media
👍2😢1
Treponema sp. can be selected by taking advantage of ____________
Anonymous Quiz
18%
small cell size
22%
motility
16%
dilute media
45%
small cell diameter and bacterial motility
❤1
Roll-tube technique is used to isolate ___________
Anonymous Quiz
15%
aerobes
32%
anaerobes
24%
facultatives
28%
stringent anaerobes
🤩1
In pour-plate method, the medium should be maintained at what temperature?
Anonymous Quiz
56%
37 degree C
14%
67 degree C
27%
45 degree C
3%
0 degree C
🔥1
Dilution of the mixed culture is a common step in all the three methods: the streak-plate, the spread-plate and the pour-plate technique.
Anonymous Quiz
81%
True
19%
False
👍2
What is the temperature of liquid nitrogen?
Anonymous Quiz
25%
-120 degree C
9%
0 degree C
11%
-150 degree C
55%
-196 degree C
🤩2👍1
Nichrome loop wire is used in which of the following techniques?
Anonymous Quiz
6%
Pour-plate
58%
Streak-plate
20%
Spread-plate
16%
Roll-tube technique
👍1🔥1
What is the color of colonies of Staphylococcus aureus?
Anonymous Quiz
34%
Pink
21%
Red
31%
Violet
14%
Gold
❤3
Growth in broth cultures occurs mainly in the form of__________
Anonymous Quiz
45%
slightly turbid
32%
heavy surface pellicle
11%
sediment
11%
viscous
🔥1😱1
The respiratory chain of bacteria is associated with the _____________
Anonymous Quiz
34%
mitochondrial membrane
41%
cytoplasmic membrane
19%
cell wall
5%
cytoplasm
👍2😱1
❤2
Which of the following are propionic acid bacteria?
Anonymous Quiz
16%
Streptococcus
45%
Acetobacter
29%
Clostridium
10%
Veillonella
👍1🔥1
What is the other name of glycolysis?
Anonymous Quiz
11%
PPP cycle
30%
TCA cycle
8%
C4 cycle
51%
EMP pathway
❤2
Stickland reaction is the alternative name for ________
Anonymous Quiz
27%
Lactic acid fermentation
28%
Alcoholic fermentation
29%
Mixed acid fermentation
16%
Amino acid fermentation
🤩1
Which of the following intermediates of TCA cycle act as amino acid precursors?
Anonymous Quiz
31%
oxaloacetic acid
26%
succinic acid
12%
citric acid
31%
acetyl CoA
👍2
Phosphoenolpyruvate (PEP) is converted to oxaloacetate by the enzyme PEP deaminase.
Anonymous Quiz
63%
True
37%
False
😢2
Which molecule will combine with the four-carbon oxaloacetate in the TCA cycle to form the six-carbon citrate?
Anonymous Quiz
10%
lactic acid
21%
NADH
7%
ATP
62%
acetyl-CoA
🔥1