Question

Given below are some antibiotics and their microbial source. Match the correct

1. Chloromycetin	a. Streptomyces griseus
2. Erythromycin	b. Penicillium chrysogenum
3. Penicillin	c. Streptomyces erythreus
4. Streptomycin	d. Streptomyces venezuelae

Option A: 1a, 2b, 3c, 4d
Option B: 1d, 2c, 3b, 4a
Option C: 1b, 2d, 3a, 4c
Option D: 1c, 2a, 3d, 4b

Answer 1

Hint: Antibiotics are medicines that inhibit the growth of microorganisms or destroy the microorganisms. Antibiotics fight with bacterial infections either by killing bacteria or slowing or restricting the growth of the bacteria, these medicines attack bacteria by attacking on the wall or coating surrounding the bacteria and thus further increase in the number of bacteria is restricted.

Complete answer:
Antibiotics are derived from various microbial sources such as fungi, bacteria, etc. Here are given few antibiotics with few microbial sources and we have to find the correct match.

1. Chloromycetin- It is eye drops and ointment and is also topical antibiotic preparations for bacterial conjunctivitis treatment, it is a bacterial infection affecting the eye. It is a broad spectrum antibiotic derived from streptomyces venezuelae.

2. Erythromycin- It works by decreasing protein production in bacteria, it is used to treat bacterial infections of the respiratory tract mainly bronchitis, whooping cough, pneumonia etc. It is derived from streptomyces erythreus.

3. Penicillin: It is the first found antibiotic, it treats severe life threatening infections caused by bacteria. Alexander Fleming invented it. It is derived from Penicillium chrysogenum.

4. Streptomycin: It is derived from Streptomyces griseus and it is an aminoglycoside antibiotic. It is a bactericidal antibiotic.
 By the above information we know that the correct sequence of matching is- 1d, 2c, 3b, 4a.

So the correct option is Option B- 1d, 2c, 3b, 4a.

Note:
Penicillin was discovered accidentally by scientist Alexander Fleming when he came back to his lab after vacations he observed that a green mold called penicillium notatum had contaminated Petri dishes in his lab and were killing some of the bacteria that he was growing.