Q.105 Botany ⭐ 360° Option Elimination Active

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NEET 2025 Botany Question 105 Solution

Topic: Microbes in Human Welfare · Official NTA Booklet Code 45

Question

Streptokinase produced by bacterium Streptococcus is used for

(1)Curd production
(2)Ethanol production
(3)Liver disease treatment
(4)Removing clots from blood vessels

✓

Verified Against NTA Final Answer Key

Option (4) : Removing clots from blood vessels

📚 Microbes in Human Welfare Easy

📋 Given Parameters & Problem Setup

Bioactive Product Streptokinase

Microbial Source Bacterium Streptococcus (modified by genetic engineering)

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The 30-Second Exam Hall Shortcut: ⚡ Clot Buster Streptokinase Recall

⏱️ Save ~20 seconds

Streptokinase from Streptococcus is the textbook "CLOT BUSTER" used clinically to dissolve intravascular thrombi in myocardial infarction patients! ⟹ Removing clots from blood vessels!

1 Recall bioactive molecules from NCERT Chapter 10 Section 10.2.3:

2 - Streptokinase (from Streptococcus): "Clot buster" for dissolving blood clots in blood vessels of patients suffering myocardial infarction.

3 - Cyclosporin A (from Trichoderma polysporum): Immunosuppressive agent in organ transplants.

4 - Statins (from Monascus purpureus): Blood cholesterol lowering agents.

5 - LAB (Lactobacillus): Curd production.

6 Streptokinase is specifically used for removing clots from blood vessels.

7 Select Option (4) in under 5 seconds!

🛡️

Why You Can 100% Trust This Shortcut: Bioactive Microbe Metabolites (NCERT Biology · Microbes in Human Welfare: Cyclosporin A, Statins, Streptokinase).

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Step-by-Step Rigorous Workflow & Mathematical Proof

Step 1

Microbial Source and Function of Streptokinase

Streptokinase is a bacterial protein secreted by various strains of hemolytic Streptococcus bacteria and modified through recombinant DNA technology:

\text{Streptococcus} \xrightarrow{\text{Genetic Engineering}} \text{Streptokinase (Fibrinolytic Enzyme / Clot Buster)}

• It complexes with plasminogen to activate plasmin, which enzymatic breaks down fibrin networks holding blood clots together.

Step 2

Clinical Indications and Applications

Examine medical utility described in NCERT:

\text{Clinical Use: Dissolving thrombi in coronary vessels during acute myocardial infarction}

• Administered intravenously to restore blood perfusion to ischemic cardiac tissue.
• Used explicitly for "removing clots from blood vessels", matching Option (4).

⭐

360° Option Elimination Engine Key Feature

Diagnose every choice: Know exactly why the right option works and why distractors fail.

4-Option Deep Scan

1 A

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Curd is produced by Lactic Acid Bacteria (Lactobacillus).

⚠️

Student Fallacy (Why candidates pick this trap): Confusing Streptococcus with Lactobacillus.

2 B

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Ethanol is produced by yeast (Saccharomyces cerevisiae).

⚠️

Student Fallacy (Why candidates pick this trap): Confusing bacteria with yeast.

3 C

✗ Incorrect

Verdict & Scientific Reason:

Incorrect. Unrelated clinical condition.

⚠️

Student Fallacy (Why candidates pick this trap): Guessing.

4 D

✓ 100% Correct

Verdict & Scientific Reason:

100% correct. Streptokinase acts as a clot buster for clearing thrombi in blood vessels.

💡

Why this is airtight: None; verbatim NCERT knowledge.

⚠️

NTA Trap Alert: Confusing Streptokinase with Statins or Cyclosporin A

NCERT lists three famous microbial bioactive molecules in the same paragraph: Streptokinase (clot buster), Cyclosporin A (immunosuppressant), and Statins (cholesterol lowering). Always keep their distinct clinical targets crystal clear!

🛡️ How to avoid the -1 mark: Streptokinase = Clot buster; Statin = Cholesterol; Cyclosporin = Organ transplant!

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Core NEET Syllabus Standard

NEET Biology Core Syllabus · Microbes in Human Welfare Standard Benchmark

Core Scientific Principle Tested:

"Streptokinase produced by Streptococcus is used as a clot buster to remove clots from blood vessels."

Syllabus Focus: Chemicals, Enzymes and other Bioactive Molecules

✓ Core NEET UG Syllabus Anchor Syllabus & Academic Standards ↗

Strepto-KINASE = Kills Clots (Clot Buster in blood vessels, Option 4)!

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NEET 2025 Botany Question 105 Solution

Question

The 30-Second Exam Hall Shortcut: ⚡ Clot Buster Streptokinase Recall

Step-by-Step Rigorous Workflow & Mathematical Proof

Microbial Source and Function of Streptokinase

Clinical Indications and Applications

360° Option Elimination Engine Key Feature

NTA Trap Alert: Confusing Streptokinase with Statins or Cyclosporin A

Core NEET Syllabus Standard

Ready to attempt under real exam pressure?

🔗 Related Questions — Microbes in Human Welfare

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