Question

Which of these statements is true?

1. An antibiotic is any substance produced by a

   organism that is antagonistic to the growth of

   prokaryotes.

2. An antibiotic is any substance produced by a

   prokaryote that is antagonistic to the growth of

   other viruses.

3. An antibiotic is any substance produced by a

   prokaryote that is antagonistic to the growth of

   eukaryotic cells.

4. An antibiotic is any substance produced by a

   prokaryote that prevents growth of the same prokaryote.

Short answer

The correct answer is option a.

Antibiotics are chemicals that bacteria and fungi make naturally. Antibiotics prevent prokaryotes from growing.

Step-by-step solution

Introduction

Antibiotics

• Antibiotics are biological compounds.
• It prevents prokaryotes from growing.

Explanation

The correct answer is option a.

The explanation for the correct option

• Antibiotics are chemicals that bacteria and fungi make naturally.
• Antibiotics prevent prokaryotes from growing.

• Antibiotics work by interrupting critical bacterial processes, killing or preventing bacteria from growing.
• Different antibiotics work against various types of bacteria.
• Antibiotics do not work upon viruses.