The karyotype of cells formed from continuous cell lines is _______________
Anonymous Quiz
22%
haploid
39%
diploid
25%
aneuploid
15%
haploid and diploid
Cancer of the lip of mouth have been associated with ___________
Anonymous Quiz
15%
HSV1
43%
HSV2
30%
EBV
12%
SV 40
👍1
In which of the following situations will the logarithmic plot of survivors be constant?
Anonymous Quiz
22%
physiological conditions are different
27%
cells of microbial population vary in size
43%
age and physiological conditions are uniform
8%
temperature conditions are different
The effectiveness of heat in killing microorganisms is much greater in _____________
Anonymous Quiz
30%
acid
25%
alkali
20%
neutral
25%
acid and alkali
Which of the following show the maximum resistance to physical and chemical agents?
Anonymous Quiz
24%
Viruses
29%
Mold spores
36%
Bacterial spores
10%
E.coli
The general pressure at which the autoclave is operated is ___________
Anonymous Quiz
8%
5 Psi
33%
20 Psi
53%
15 Psi
6%
40 Psi
Which of the following instruments is used to perform tyndallization?
Anonymous Quiz
18%
Autoclave
60%
Steam Arnold
13%
Gas oven
8%
Incubator
🔥1
Which of the following are resistant to desiccation?
Anonymous Quiz
11%
gonococci
49%
streptococci
23%
meningococci
17%
bacillus
👍1
Passage of water from a low solute concentration into the cell is referred to as ______________
Anonymous Quiz
17%
plasmoptysis
50%
plasmolysis
14%
isotonic
19%
hypertonic
Which material is used for the Berkefeld filter?
Anonymous Quiz
37%
diatomaceous earth
34%
asbestos pad
17%
porcelain
11%
sintered glass disks
Which of the following is not a chemical agent for microbial control?
Anonymous Quiz
42%
Radiations
24%
Antibiotics
20%
Antiseptics
14%
Germicide
👍2
The antimicrobial activity of phenolics is not reduced at which of the following conditions?
Anonymous Quiz
19%
acidic pH
38%
alkaline pH
34%
low temperatures
9%
presence of soap
Which of the following agents irreversibly oxidize and inactivate proteins with sulphydral groups?
Anonymous Quiz
24%
Alcohol
41%
Phenol
24%
Iodine
12%
Chlorine
Solutions of sodium hypochlorite of a 1% concentration are used for ________
Anonymous Quiz
18%
sanitizing dairy equipment
47%
personal hygiene and a household disinfectant
19%
household bleaches
15%
disinfecting open wounds
Which among the following is an example of an organic compound of mercury?
Anonymous Quiz
28%
Mercuric chloride
33%
Mercuric oxide
24%
Mercurochrome
14%
Ammoniated mercury
Which of the following is an acridine dye?
Anonymous Quiz
24%
crystal violet
41%
malachite green
25%
tryptoflavine
10%
brilliant green
Gonococci are inhibited by tryptoflavine in dilutions of ____________
Anonymous Quiz
19%
1:200,000
47%
1:300,000
27%
1:1,000,000
7%
1:10,000,000
We observe increased growth in nutrient agar plates as concentration of chemical agent is decreased.
Anonymous Quiz
73%
True
27%
False