Which of the following is used to manufacture ethanol from starch:
- Penicilline
- Saccharomyces
- Azotobacter
- Lactobacillus
The Correct Option is B
Solution and Explanation
Saccharomyces is used to manufacture ethanol from starch. Saccharomyces cerevisiae is a type of yeast commonly used in the fermentation process to convert sugars (including starch-derived sugars) into ethanol during the production of alcoholic beverages and biofuels.
So, the correct option is (B): Saccharomyces
Top Questions on Microbes in human welfare
- Student to attempt either option (A) or (B): (A) Ravi lives in a village where he suggested to the local farmers to introduce a fungus as biofertilizer into their crop fields. State the benefits provided by the fungus to the crop.
OR
(B)- [(i)] How do secondary lymphoid organs provide immunity?
- [(ii)] Highlight the role of spleen as an organ that provides immunity.
- CBSE CLASS XII - 2025
- Biology
- Microbes in human welfare
- Assertion (A): Swiss cheese is characterized by large holes due to CO2 production.
Reason (R): It is ripened by growing a specific fungi.- CBSE CLASS XII - 2025
- Biology
- Microbes in human welfare
- Assertion (A): Swiss cheese is characterized by large holes due to CO2 production.
Reason (R): It is ripened by growing a specific fungi.- CBSE CLASS XII - 2025
- Biology
- Microbes in human welfare
- Large scale industrial production of streptokinase for human welfare is done using the microbe:
- CBSE CLASS XII - 2025
- Biology
- Microbes in human welfare
- Bottled fruit juices are clearer as compared to those made at home, as they are clarified by the use of:
- CBSE CLASS XII - 2025
- Biology
- Microbes in human welfare
Questions Asked in NEET exam
Which of the following microbes is NOT involved in the preparation of household products?
A. \(\textit{Aspergillus niger}\)
B. \(\textit{Lactobacillus}\)
C. \(\textit{Trichoderma polysporum}\)
D. \(\textit{Saccharomyces cerevisiae}\)
E. \(\textit{Propionibacterium sharmanii}\)- NEET (UG) - 2025
- Microbiology
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
- NEET (UG) - 2025
- Moment Of Inertia
Predict the major product $ P $ in the following sequence of reactions:
(i) HBr, benzoyl peroxide
(ii) KCN
(iii) Na(Hg), $C_{2}H_{5}OH$- NEET (UG) - 2025
- Organic Chemistry
AB is a part of an electrical circuit (see figure). The potential difference \(V_A - V_B\), at the instant when current \(i = 2\) A and is increasing at a rate of 1 amp/second is:
- NEET (UG) - 2025
- Electromagnetic Induction and Inductance
- A wire of resistance \(R\) is cut into 8 equal pieces. From these pieces, two equivalent resistances are made by adding four of these together in parallel. Then these two are added in series. The net effective resistance of the combination is:
- NEET (UG) - 2025
- Resistance
Concepts Used:
Microbes in Human Welfare
There are several valuable microorganisms that are beneficial to humans in various manners such as:
In Household Products
- Fermentation of milk to produce yogurt.
- Milk cuddling to compose curd, cheese, and paneer.
In Industrial Products
- Production of beverages such as wine, beer, whiskey, brandy, or rum.
- Production of antibiotics such as Penicillin and other chemical substances to kill or retard the expansion of disease-causing microbes.
Fermented Beverages
- A fermentor is used to produce microbes on a large scale for industrial purposes.
- The brewer’s yeast (Saccharomyces cerevisiae) is used to make ethanol. At this time, the yeast ferments malted cereals and fruit juices.
Antibiotics
- The term antibiotic means “against life”. These materials can kill or destroy the growth of other microbes.