back to directory
NEET BIOLOGYMicrobes in Human WelfareEasy

Question

Monascus purpureus is the yeast used commercially in the production of:

A

Ethanol

B

Streptokinase for removing clots from the blood vessels

C

Citric acid

D

Blood cholesterol-lowering statins

Step-by-Step Solution

According to the text, Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. They act by competitively inhibiting the enzyme responsible for the synthesis of cholesterol. In contrast, Ethanol is produced by Saccharomyces cerevisiae, Streptokinase by Streptococcus, and Citric acid by Aspergillus niger.

Exam Context & Concepts Covered

This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Microbes in Human Welfare. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

BIOLOGYMicrobes in Human Welfaremonascuspurpureuscommerciallyproduction

More Microbes in Human Welfare Questions

View all

Which one of the following helps in absorption of phosphorus from the soil by plants?

A.Rhizobium
B.Frankia
C.Anabaena
D.Glomus
EasySolve

Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?

A.Aspergillus niger – citric acid
B.Yeast – statins
C.Acetobacter aceti – acetic acid
D.Clostridium butylicum – lactic acid
EasySolve

Match the following list of microbes with the products/functions they are used for: Column I A. Saccharomyces cerevisiae B. Monascus purpureus C. Trichoderma polysporum D. Propionibacterium sharmanii Column II 1. Production of immunosuppressive agents 2. Ripening of Swiss cheese (Large holes) 3. Commercial production of ethanol 4. Blood cholesterol lowering agents

A.A-3, B-4, C-1, D-2
B.A-3, B-1, C-4, D-2
C.A-4, B-3, C-2, D-1
D.A-4, B-2, C-1, D-3
EasySolve

Which of the following statements about methanogens is not correct?

A.They can be used to produce biogas.
B.They are found in the rumen of cattle and their excreta.
C.They grow aerobically and breakdown cellulose-rich food.
D.They produce methane gas.
EasySolve

Match the following organisms with the products they produce: Column I (a) Aspergillus niger (b) Acetobacter aceti (c) Clostridium butyricum (d) Lactobacillus Column II (i) Ethanol (ii) Citric acid (iii) Lactic acid (iv) Acetic acid (v) Butyric acid

A.(a)-(ii), (b)-(i), (c)-(iii), (d)-(v)
B.(a)-(ii), (b)-(iv), (c)-(v), (d)-(iii)
C.(a)-(ii), (b)-(iv), (c)-(iii), (d)-(v)
D.(a)-(iii), (b)-(iv), (c)-(v), (d)-(i)
EasySolve

Match List-I with List-II: List-I A. Saccharomyces cerevisiae B. Aspergillus niger C. Trichoderma polysporum D. Clostridium butylicum List-II I. Citric acid II. Butyric acid III. Ethanol IV. Cyclosporin-A

A.A-III, B-I, C-IV, D-II
B.A-III, B-II, C-I, D-IV
C.A-IV, B-III, C-II, D-I
D.A-II, B-IV, C-III, D-I
EasySolve

During sewage treatment, biogases are produced which include:

A.methane, oxygen, hydrogen sulphide
B.hydrogen sulphide, methane, sulphur dioxide
C.hydrogen sulphide, nitrogen, methane
D.methane, hydrogen sulphide, carbon dioxide
EasySolve

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.

A.Statement I is correct but Statement II is incorrect.
B.Statement I is incorrect but Statement II is correct.
C.Both Statement I and Statement II are correct.
D.Both Statement I and Statement II are incorrect.
EasySolve

Why 32,000+ students choose TopperSquare

Everything you need to crack NEET

15,000+ Chapter MCQs

Physics, Chemistry, Biology — chapter-wise, topic-wise practice

AI Performance Analytics

Know your weak topics. Get a personalised study plan.

Full NEET Mock Tests

180 questions, timed, with detailed score analysis

PYQ Sets 2010–2024

15 years of past papers with solved explanations

Start Practising Free

No credit card · 30-second signup · Free forever plan included

This neet biology practice question is part of the TopperSquare free question bank. TopperSquare offers 15,000+ chapter-wise NEET MCQs across Physics, Chemistry, and Biology with detailed step-by-step explanations, full mock tests, NEET PYQs (2010–2024), and an AI-powered performance analytics dashboard. browse all neet practice questions → · practice biology sets →

Explore more subjects:Physics MCQs•Chemistry MCQs•Biology MCQs•Botany MCQs•Zoology MCQs•NEET Mock Tests•NEET PYQs