20 + Mcqs in Cell Cultivations Page 1 McqOptions

1.	The isolation of the gonorrhoea - causing organisms, ,from a clinical specimen is facilitated by the use of media containing
A.	cellulose
B.	certain antibiotics
C.	succinate
D.	none of these
Answer» C. succinate

Discussion

2.	The archaebacterium , an extreme halophile, and , a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because
A.	they contain ether-linked isoprenoids in their plasma membrane
B.	they lack murein in their cell wall
C.	they contain 80S, as opposed to 70S, ribosomes
D.	all of the above
Answer» C. they contain 80S, as opposed to 70S, ribosomes

Discussion

3.	has an optimum pH of
A.	2.0-3.5
B.	0.5-6.0
C.	6.5-7.5
D.	9.0-9.5
Answer» B. 0.5-6.0

Discussion

4.	Which of the following is the necessary step for cultivating the microorganisms?
A.	Preparing a culture medium for the growth of microorganisms
B.	Sterilizing in order to eliminate all living microorganisms in vessel
C.	Inoculating the microorganisms in the prepared medium
D.	All of the above
Answer» E.

Discussion

5.	Which of the following is an abiotic elicitors?
A.	UV irradiation
B.	Osmotic shock
C.	Heavy metal ions
D.	All of these
Answer» E.

Discussion

6.	Suspension cultures consist of cells and cell aggregates, growing dispersed in
A.	liquid medium
B.	solid nutrient medium
C.	solid or liquid medium
D.	none of these
Answer» B. solid nutrient medium

Discussion

7.	Radical shifts in pH can be prevented by incorporating
A.	a buffer
B.	an oxidizing agent
C.	a reducing agent
D.	any of these
Answer» B. an oxidizing agent

Discussion

8.	The protoplast can be used to
A.	modify genetic information
B.	create plant hybrid
C.	study plant viral infections
D.	all of these
Answer» E.

Discussion

9.	Balanced growth is defined as
A.	cultures undergoing balanced growth while maintaining a constant chemical composition
B.	balancing the growth while controlling the pH
C.	balancing the growth while controlling the temperature
D.	balancing the growth while changing the nutrient composition
Answer» B. balancing the growth while controlling the pH

Discussion

10.	Semi-solid media, prepared with agar at concentrations of 0.5% or less are useful for the cultivation of
A.	<i>Microaerophillic bacteria</i>
B.	<i>Lactobacilli</i>
C.	<i>E.coli</i>
D.	all of these
Answer» B. <i>Lactobacilli</i>

Discussion

11.	Which of the following is not an indirect method for the measurement of cell mass?
A.	Nutrient composition
B.	Cell dry weight
C.	Viscosity
D.	Heat evolution
Answer» C. Viscosity

Discussion

12.	Callus cultures are amorphous cell aggregates arising from the unorganized growth of explants on an
A.	liquid medium
B.	solid nutrient medium
C.	aseptic solid nutrient medium
D.	solid or liquid medium
Answer» D. solid or liquid medium

Discussion

13.	The archaebacterium Halobacterium, an extreme halophile, and Sulfolobus, a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because
A.	they contain ether-linked isoprenoids in their plasma membrane
B.	they lack murein in their cell wall
C.	they contain 80S, as opposed to 70S, ribosomes
D.	all of the above
Answer» C. they contain 80S, as opposed to 70S, ribosomes

Discussion

14.	The isolation of the gonorrhoea - causing organisms, Neisseria gonorrhoeae,from a clinical specimen is facilitated by the use of media containing
A.	cellulose
B.	certain antibiotics
C.	succinate
D.	none of these
Answer» C. succinate

Discussion

15.	Anchorage -dependent cells require
A.	wettable surface for growth
B.	dry surface for growth
C.	either (a) or (b)
D.	nothing to do with the surface
Answer» B. dry surface for growth

Discussion

16.	Thiobacillus thiooxidans has an optimum pH of
A.	2.0-3.5
B.	0.5-6.0
C.	6.5-7.5
D.	9.0-9.5
Answer» B. 0.5-6.0

Discussion

17.	For most bacteria, the optimum pH for growth lies between
A.	6.5-7.5
B.	3.5-4.5
C.	4.5-5.5
D.	5.5-6.5
Answer» B. 3.5-4.5

Discussion

18.	The size of a single plant cell is usually within the range of
A.	10-20 m in diameter and 25-100 m long
B.	20-40 m in diameter and 100-200 m long
C.	40-60 m in diameter and 200-300 m long
D.	60-80 m in diameter and 300-400 m long
Answer» C. 40-60 m in diameter and 200-300 m long

Discussion

19.	The cell mass can be measured optically by determining the amount of light scattered by a suspension of cells. The measurements are usually at a wavelength of
A.	300-400nm
B.	400-500nm
C.	500-600nm
D.	600-700nm
Answer» E.

Discussion

20.	Stringent anaerobes can be grown in a media by taking special measure as
A.	boiling the media for several minutes
B.	addition of cysteine
C.	passing through oxygen-free nitrogen
D.	any of these
Answer» E.

Discussion

Explore topic-wise MCQs in Microbiology.

The isolation of the gonorrhoea - causing organisms, ,from a clinical specimen is facilitated by the use of media containing

The archaebacterium , an extreme halophile, and , a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because

has an optimum pH of

Which of the following is the necessary step for cultivating the microorganisms?

Which of the following is an abiotic elicitors?

Suspension cultures consist of cells and cell aggregates, growing dispersed in

Radical shifts in pH can be prevented by incorporating

The protoplast can be used to

Balanced growth is defined as

Semi-solid media, prepared with agar at concentrations of 0.5% or less are useful for the cultivation of

Which of the following is not an indirect method for the measurement of cell mass?

Callus cultures are amorphous cell aggregates arising from the unorganized growth of explants on an

The archaebacterium Halobacterium, an extreme halophile, and Sulfolobus, a thermoacidophile, can be cultured in the presence of antibiotics such as streptomycin and chloramphenicol because

The isolation of the gonorrhoea - causing organisms, Neisseria gonorrhoeae,from a clinical specimen is facilitated by the use of media containing

Anchorage -dependent cells require

Thiobacillus thiooxidans has an optimum pH of

For most bacteria, the optimum pH for growth lies between

The size of a single plant cell is usually within the range of

The cell mass can be measured optically by determining the amount of light scattered by a suspension of cells. The measurements are usually at a wavelength of

Stringent anaerobes can be grown in a media by taking special measure as