Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

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

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 

  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)
Reveal answer Fill a bubble to check yourself
D Correct answer
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)'
Multiple choice microbiology: organisms in industry option b: biotechnology and bioinformatics biology

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

  1. Wine

  2. Whisky

  3. Rum

  4. Brandy
Reveal answer Fill a bubble to check yourself
A Correct answer
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' .

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

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


(a) Brandy
(b) Gin

(c) Wine
(d) Beer

  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. $d \rightarrow c \rightarrow b \rightarrow a$
Reveal answer Fill a bubble to check yourself
C Correct answer
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

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

Alcoholic dehydrogenase gets activated by?

  1. $Mg^{++}$

  2. Mo
  3. $Zn^{++}$

  4. K
Reveal answer Fill a bubble to check yourself
A Correct answer
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$^{++}$'.

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

Bitterness of cucurbits is due to

  1. The acid present in them

  2. Presence of bitter seed in them

  3. The alkalinity in their pulp

  4. The occurrence of triterpenoids
Reveal answer Fill a bubble to check yourself
D Correct answer
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.

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

Production of ethanol $(C _2H _5OH)$ occurs in one of the life processes of

  1. Bread mould

  2. Yeast

  3. Mushroom

  4. Penicillium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ethanol is produced during Anaerobic respiration by yeast, the process commonly known as Fermentation.

Glucose $ \rightarrow\ $ethanol + Carbon dioxide + energy
It is utilised in the breweries and bakeries.
Hence, the correct answer is 'Yeast'.