Microbes in Human Welfare PYQ

Streptokinase produced by bacterium Streptococcus is used for

Which of the following is an example of non-distilled alcoholic beverage produced by yeast?

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:

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:

Given below are two statements: Statement I: Antibiotics are chemicals produced by microbes that kill other microbes. Statement II: Antibodies are chemicals formed in body that eliminate microbes. In the light of the above statements, choose the most appropriate answer from the options given below.

Following are the steps involved in action of toxin in Bt. Cotton A. The inactive toxin converted into active form due to alkaline pH of gut of insect. B. Bacillus thuringiensis produce crystals with toxic insecticidal proteins. C. The alkaline pH solubilises the crystals. D. The activated toxin binds to the surface of midgut cells, creates pores and causes death of the insect. E. The toxin proteins exist as inactive protoxins in bacteria. Choose the correct sequence of steps from the options given below:

Match List I with List II  Choose the correct answer from the options given below:

Match List-I with List-II relating to microbes and their products: $\begin{array}{|l|l|r|l|} \hline & \begin{array}{l} \text{List-I} \\ \text{(Microbes)} \end{array} & & \begin{array}{l} \text{List-II} \\ \text{(Products)} \end{array} \\ \hline A. & \text{Streptococcus} & I. & \text{Citric acid} \\ \hline B. & \text{Trichoderma polysporum} & II. & \text{Clot buster} \\ \hline C. & \text{Monascus purpureus} & III. & \text{Cyclosporin A} \\ \hline D. & \text{Aspergillus niger} & IV. & \text{Statins} \\ \hline \end{array}$ Choose the correct answer from the options given below:

Identify the microorganism which is responsible for the production of an immunosuppressive molecule cyclosporin A:

Match List$-I$ with List$-\mathrm{II}$. <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">List$-I$</td><td colspan="2" rowspan="1">List$-\mathrm{II}$</td></tr><tr><td>(a)</td><td>Aspergillus niger</td><td>(i)</td><td>Acetic acid</td></tr><tr><td>(b)</td><td>Acetobacter aceti</td><td>(ii)</td><td>Lactic acid</td></tr><tr><td>(c)</td><td>Clostridium butylicum</td><td>(iii)</td><td>Citric acid</td></tr><tr><td>(d)</td><td>Lactobacillus</td><td>(iv)</td><td>Butyric acid</td></tr></tbody></table>

Match the following columns and select the correct option. <table class="pyq-table"><tbody><tr><td></td><td>Column-I</td><td></td><td>Column-II</td></tr><tr><td>(a)</td><td>Clostridium butylicum</td><td>(i)</td><td>Cyclosporin-A</td></tr><tr><td>(b)</td><td>Trichoderma polysporum</td><td>(ii)</td><td>Butyric Acid</td></tr><tr><td>(c)</td><td>Monascus purpureus</td><td>(iii)</td><td>Citric Acid</td></tr><tr><td>(d)</td><td>Aspergillus niger</td><td>(iv)</td><td>Blood cholesterol lowering agent</td></tr></tbody></table>

Cyclosporin $A$, used as an immuno-suppression agent, is produced from:

For the commercial and industrial production of citric acid, which of the following microbes is used?

Match the following columns and select the correct option: <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">Column$-I$</td><td colspan="2" rowspan="1">column$-\mathrm{II}$</td></tr><tr><td>(a)</td><td>Dragonflies</td><td>(i)</td><td>Biocontrol agents of several plant pathogens</td></tr><tr><td>(b)</td><td>Bacillus thuringiensis</td><td>(ii)</td><td>Get rid of Aphids and mosquitoes</td></tr><tr><td>(c)</td><td>Glomus</td><td>(iii)</td><td>Narrow spectrum insecticidal applications</td></tr><tr><td>(d)</td><td>Baculoviruses</td><td>(iv)</td><td>Biocontrol agents of lepidopteran plant pests</td></tr><tr><td></td><td></td><td>(v)</td><td>Absorb phosphorus from soil</td></tr></tbody></table>

Which of the following is put into Anaerobic sludge digester for further sewage treatment?

A biocontrol agent to be a part of an integrated pest management should be

Match the following organisms with the products they produce: <table class="pyq-table"><tbody><tr><th></th><th>Column - I</th><th></th><th>Column - II</th></tr><tr><td>$(a)$</td><td>Clostridium butylicum</td><td>$(i)$</td><td>Lactic acid</td></tr><tr><td>$(b)$</td><td>Saccharomyces cerevisiae</td><td>$(ii)$</td><td>Butyric acid</td></tr><tr><td>$(c)$</td><td>Aspergillus niger</td><td>$(iii)$</td><td>Citric acid</td></tr><tr><td>$(d)$</td><td>Acetobacter aceti</td><td>$(iv)$</td><td>Alcohol</td></tr><tr><td></td><td></td><td>$(v)$</td><td>Acetic acid</td></tr></tbody></table>

Among the following pairs of microbes, which pair has both the microbes that can be used as biofertilisers?

Select the correct group of biocontrol agents.

Which of the following is a commercial blood cholesterol-lowering agent?

Which of the following can be used as a biocontrol agent in treatment of Plant diseases?

This entry in the table is wrongly matched, identify.

Conversion of milk to curd improves its nutritional value by increasing the amount of

Which of the following in sewage treatment removes suspended solids?