Which of the following are common antibiotics produced from bacteria and fungi? 1. Streptomycin 2. Aspirin 3. Erythromycin Select the correct answer using the code given below:

The correct option is (c). Explanation Antibiotics are chemical substances produced by certain microbes (bacteria and fungi) that function to kill or inhibit the growth of other disease-causing microbes. They are distinct from synthetic analgesic or anti-inflammatory drugs. Statement-wise Analysis: - Statement 1 is Correct: Streptomycin is an aminoglycoside antibiotic. It is produced by the soil bacterium Streptomyces griseus. It is historically significant as the first antibiotic effective against tuberculosis. - Statement 2 is Incorrect: Aspirin (Acetylsalicylic acid) is not an antibiotic. It is a non-steroidal anti-inflammatory drug (NSAID) used to reduce pain, fever, and inflammation. It is a synthetic chemical compound, originally derived from salicylic acid found in willow bark, and is not a product of microbial metabolism. - Statement 3 is Correct: Erythromycin is a macrolide antibiotic produced by the bacterium Saccharopolyspora erythraea (formerly classified as Streptomyces erythreus). It is widely used to treat various bacterial infections, particularly in patients allergic to penicillin. Key Takeaway: Antibiotics such as Penicillin, Streptomycin, and Erythromycin are microbial products used to fight bacterial infections, whereas Aspirin is a synthetic drug used for pain relief and inflammation control.

NCERT Class 8 Science — Chapter 2: Microorganisms : friend and foe

mcqeasy

Which of the following are common antibiotics produced from bacteria and fungi?

Streptomycin
Aspirin
Erythromycin

Select the correct answer using the code given below:

Official previous-year question

Verified 1 Aug 2026.

Options

A1 and 2 only
B2 only
C1 and 3 only
D1, 2 and 3

Did you get this right?

Solution

The correct option is (c).

Explanation

Antibiotics are chemical substances produced by certain microbes (bacteria and fungi) that function to kill or inhibit the growth of other disease-causing microbes. They are distinct from synthetic analgesic or anti-inflammatory drugs.

Statement-wise Analysis:

Statement 1 is Correct: Streptomycin is an aminoglycoside antibiotic. It is produced by the soil bacterium Streptomyces griseus. It is historically significant as the first antibiotic effective against tuberculosis.
Statement 2 is Incorrect: Aspirin (Acetylsalicylic acid) is not an antibiotic. It is a non-steroidal anti-inflammatory drug (NSAID) used to reduce pain, fever, and inflammation. It is a synthetic chemical compound, originally derived from salicylic acid found in willow bark, and is not a product of microbial metabolism.
Statement 3 is Correct: Erythromycin is a macrolide antibiotic produced by the bacterium Saccharopolyspora erythraea (formerly classified as Streptomyces erythreus). It is widely used to treat various bacterial infections, particularly in patients allergic to penicillin.

Key Takeaway: Antibiotics such as Penicillin, Streptomycin, and Erythromycin are microbial products used to fight bacterial infections, whereas Aspirin is a synthetic drug used for pain relief and inflammation control.

Your note

More from Chapter 2: Microorganisms : friend and foe

With reference to microorganisms, consider the following statements: 1. They are classified into four major groups: bacteria, fungi, protozoa, and algae. 2. They can survive only in moderate climates and die in ice-cold or hot spring environments. 3. Some microorganisms are unicellular, while others are multicellular. Which of the statements given above is/are correct?

medium

Which one of the following characteristics distinguishes viruses from other microorganisms?

easy

Consider the following statements regarding the habitat of microorganisms: 1. They are found in air, water, and soil but not inside the bodies of animals. 2. They can exist freely as well as grow on other organisms. 3. They are capable of surviving in deserts and marshy lands. Which of the statements given above is/are correct?

medium

Which one of the following human diseases is caused by a protozoan pathogen?

easy

Consider the following pairs of microorganisms and their classification: 1. Aspergillus : Algae 2. Paramecium : Protozoa 3. Penicillium : Fungi 4. Spirogyra : Bacteria How many of the above pairs are correctly matched?

hard

Keep practising Chapter 2: Microorganisms : friend and foe

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The correct option is (c).

Explanation

Statement-wise Analysis:

Statement 1 is Correct: Streptomycin is an aminoglycoside antibiotic. It is produced by the soil bacterium Streptomyces griseus. It is historically significant as the first antibiotic effective against tuberculosis.
Statement 2 is Incorrect: Aspirin (Acetylsalicylic acid) is not an antibiotic. It is a non-steroidal anti-inflammatory drug (NSAID) used to reduce pain, fever, and inflammation. It is a synthetic chemical compound, originally derived from salicylic acid found in willow bark, and is not a product of microbial metabolism.
Statement 3 is Correct: Erythromycin is a macrolide antibiotic produced by the bacterium Saccharopolyspora erythraea (formerly classified as Streptomyces erythreus). It is widely used to treat various bacterial infections, particularly in patients allergic to penicillin.