Microbes in Human Welfare · Biology · NEET
MCQ (Single Correct Answer)
Which of the following is an example of non-distilled alcoholic beverage produced by yeast?
Which of following organisms cannot fix nitrogen?
A. Azotobacter
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose the correct answer from the options given below:
Streptokinase produced by bacterium Streptococcus is used for
Which of the following microbes is NOT involved in the preparation of household products?
A. Aspergillus niger
B. Lactobacillus
C. Trichoderma polysporum
D. Saccharomyces cerevisiae
E. Propionibacterium sharmanii
Choose the correct answer from the options given below:
Match List-I with List-II relating to microbes and their products:
List - I (Microbes) |
List - II (Products) |
||
---|---|---|---|
(A) | Streptococcus | (I) | Citric acid |
(B) | Trichoderma polysporum | (II) | Clot buster |
(C) | Monascus purpureus | (III) | Cyclosporin A |
(D) | Aspergillus niger | (IV) | Statins |
Choose the correct answer from the options given below:
Match List I with List II
List - I | List - II | ||
---|---|---|---|
A. | Clostridium butylicum | I. | Ethanol |
B. | Saccharomyces cerevisiae | II. | Streptokinase |
C. | Trichoderma polysporum | III. | Butyric acid |
D. | Streptococcus sp. | IV. | Cyclosporin-A |
Choose the correct answer from the options given below:
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Spirulina is a microbe that can be used for reducing environmental pollution.
Reason (R) : Spirulina is a rich source of protein, carbohydrates, fats, minerals and vitamins.
In the light of the above statements, choose the most appropriate answer from the options given below:
Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A :
List-I | List-II | ||
---|---|---|---|
(a) | Aspergillus niger | (i) | Acetic Acid |
(b) | Acetobacter aceti | (ii) | Lactice Acid |
(c) | Clostridium butylicum | (iii) | Citric Acid |
(d) | Lactobacillus | (iv) | Butyric Acid |
Choose the correct answer from the options given below
Column-I | Column-II |
---|---|
(a) Clostridium butylicum | (i) Cyclosporin-A |
(b) Trichoderma polysporum | (ii) Butyric Acid |
(c) Monascus purpureus | (iii) Citric Acid |
(d) Aspergillus niger | (iv) Blood cholesterol lowering agent |
(a) Lactobacillus | (i) Cheese |
---|---|
(b) Saccharomyces cerevisiae | (ii) Curd |
(c) Aspergillus nige | (iii) Citric Acid |
(d) Acetobacter aceti | (iv) Bread |
(v) Acetic Acid |
Select the correct option.
Column I | Column II |
---|---|
(a) Pistils fused together | (i) Gametogenesis |
(b) Formation of gametes | (ii) Pistillate |
(c) Hyphae of higher Ascomycetes | (iii) Syncarpous |
(d) Unisexual female flower | (iv) Dikaryotic |
Column I | Column II |
---|---|
(a) Sacharomyces cerevisiae | (i) Production of immunosuppressive agent |
(b) Monascus purpureus | (ii) Ripening of Swiss cheese |
(c) Trichoderma polysporum | (iii) Commercial production of ethanol |
(d) Propionibacterium sharmanii | (iv) Production of blood cholesterol lowering agents |
(A) In transcription, adenosine pairs with uracil
(B) Regulation of lac operon by repressor is referred to as positive regulation
(C) The human genome has approximately 50,000 genes
(D) Haemophilia is a sex-linked recessive disease
How many of the above statements are right ?
(a) Single cell Spirulina can produce large quantities of food rich in protein, minerals, vitamins etc.
(b) Body weight-wise the microorganisms Methylophilus methylotrophus may be able to produce several times more proteins than the cow per day
(c) Common button mushrooms are a very rich source of vitamin C
(d) A rice variety has been developed which is very rich in calcium
(A) Utilizes genetically modified crops like Bt cotton
(B) Uses only naturally produced inputs like compost
(C) Does not use pesticides and urea
(D) Produces vegetables rich in vitamins and minerals
Which of the above statements are correct ?
''A drug used for ______ (A)___ patients is obtained from a species of the organism ______ (B)___ ''.
The one correct option for the two blanks is :