Tag: microbiology: organisms in industry

Questions Related to microbiology: organisms in industry

Study the given statements and select the correct option.
i.Carbohydrates, proteins, nucleic acids and lipids are primary metabolites.
ii.Alkaloids, flavonoids, rubber, etc., are secondary metabolites.
iii.Linoleic, linolenic and palmitic acids are the three essential fatty acids.
microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Statements (i)and(ii) are correct

  2. Statements (i)and(iii) are incorrect

  3. Statements (i)and(iii) are correct

  4. Only statement (ii)is incorrect

Show answer
Correct Option: A
Explanation:

Primary metabolites are the substances that are involved in the basic metabolic processes, this includes the proteins and carbohydrates and lipids. Plant cells have different molecules other than the primary metabolite and these are considered as secondary metabolite which is not directly involved in the metabolism.

These are considered as a waste product for the plant cell this includes alkaloids, terpenoids, pigments, essential oils.
Fatty acids are obtained by the hydrolysis of fat. Linoleic acid, linolenic acid and arachnoid acid are essential fatty acids. 
Deficiency of essential fatty acid causes follicular hyperkeratosis disease.

So, the correct option is 'Statements (i)and(ii) are correct'

Which one of the following is not the correctly matched pair of a product and the micro-organism responsible for it?

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Ethyl alcohol -Yeast

  2. Acetic acid - Lactobacillus

  3. Cheese -Nitrobacter

  4. Curd - Azotobacter

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Correct Option: A,B,C

Which bacteria is used as biopesticide first on the commercial scale in the world?

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Bacillus thuringiensis

  2. E' colt

  3. Pseudomonas aeruginosa

  4. Agrobacterium tumefaciens

Show answer
Correct Option: B

Match column I with column II and select the correct below. 

Column I Column II
A. Stains (i) Biogas
B. Dung  (ii) Saccharomyces cerevisae
C. Ethanol production (iii) Monascus purpureus
D. Cyclosporin A (iv) Trichoderma polysporum 
microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. A-(iii), B-(i), C-(iv), D-(ii)

  2. A-(i), B-(iii), C-(iv), D-(ii)

  3. A-(iii), B-(ii), C-(iv), D-(i)

  4. A-(iii), B-(i), C-(ii), D-(iv)

Show answer
Correct Option: D
Explanation:
Strains are produced by Monascus purpureus. Dung is used to produce Biogas. Saccharomyces cerevisae is used in the production of ethanol.  Cyclosporin A is obtained from Tricoderma polysporum.
So, the correct option is 'A-(iii), B-(I), C-(ii), D-(iv)'

Which, one of the following alcoholic drinks is produced without distillation ?

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Wine

  2. Whisky

  3. Rum

  4. Brandy

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Correct Option: A
Explanation:

Wine is the alcoholic drink produced without distillation whereas whisky, rum and brandy are produced by the distillation of the fermented broth. The alcoholic drinks are formed either by distillation or without distillation depending on the type of raw material used for fermentation. 

So, the correct option is 'Option A' .

Formation of vinegar from alcohol is caused by

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. Bacillus subtilis

  2. Clostridium

  3. Acetobacter aceti

  4. Azotobacter

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Correct Option: C

Give the correct ascending order of alcohol content in the following.


(a) Brandy
(b) Gin

(c) Wine
(d) Beer

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. $a \rightarrow b \rightarrow d \rightarrow c$

  2. $b \rightarrow c \rightarrow d \rightarrow a$

  3. $d \rightarrow c \rightarrow a \rightarrow b$

  4. $d \rightarrow c \rightarrow b \rightarrow a$

Show answer
Correct Option: C
Explanation:

a) Brandy has an alcohol content of 40%.

b) Gin has an alcohol content of 40-47%.
c) Wine has an alcohol content of 11.6%.
d) Beer has an alcohol content of 4-6%.
So, the correct answer is d→c→a→b

Alcoholic dehydrogenase gets activated by?

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. $Mg^{++}$

  2. Mo

  3. $Zn^{++}$

  4. K

Show answer
Correct Option: A
Explanation:

Alcoholic dehydrogenase is an enzyme required during the anaerobic respiration to convert the aldehyde to the ethanol. Its activity is enhanced by the presence of Mg$^{++}$ ions that allow the NADPH to combine for oxidation to NADP.

Hence, the correct answer is 'Mg$^{++}$'.

Bitterness of cucurbits is due to

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. The acid present in them

  2. Presence of bitter seed in them

  3. The alkalinity in their pulp

  4. The occurrence of triterpenoids

Show answer
Correct Option: D
Explanation:

Cucurbitacins is a triterpenoid that occurs commonly in Cucurbitaceae family and gives a bitter flavour. It acts as an anticancer agents, insecticides and beetle attractants. The concentration of cucurbitacins is generally highest in roots and fruit. 

Thus, the correct answer is option D.

Pyrethrin is extracted from Chrysanthemum cinerarifolium

microbiology: organisms in industry option b: biotechnology and bioinformatics biology

  1. True

  2. False

Show answer
Correct Option: A
Explanation:
Pyrethrum is the crude extract obtained from Chrysanthemum. Pyrethrin refers to a more refined extract of Pyrethrum.
So, the correct option is 'True'