Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Microbes in Human Welfare

Question:

Match the Column I with Column II .

Column I Column II
1.Streptococcus sp. A.Penicillin
2.Aspergillus niger B.Nucleopolyhedrovirus
3.Baculovirus C.Citric acid
4.Penicillium notatum  D.Streptokinase

 

Options:

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

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

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

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

Correct Answer:

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

Explanation:

The correct answer is Option (3)- 1-D, 2-C , 3-B ,4- A

Column I Column II
1.Streptococcus sp. D.Streptokinase
2.Aspergillus niger C.Citric acid
3.Baculovirus B.Nucleopolyhedrovirus
4.Penicillium notatum A.Penicillin

1. Streptokinase, produced by the bacterium Streptococcus and genetically modified, serves as a "clot buster" in the removal of blood clots from the vessels of individuals who have experienced a heart attack.

2. Aspergillus niger is a fungus known for its ability to produce citric acid. It is widely used in the food and beverage industry for the production of citric acid, which is commonly used as a flavoring agent and preservative.

3. Baculoviruses are a group of viruses that infect insects, particularly caterpillars. One type of baculovirus is the nucleopolyhedrovirus, which is used as a biocontrol agent to control pest insects. Nucleopolyhedroviruses are specific to certain insect species and are considered safe for non-target organisms.

4. Penicillin was isolated from the mould Penicillium notatum. The discovery of penicillin is credited to Sir Alexander Fleming, a Scottish biologist, who noticed its properties accidentally in 1928. While studying Staphylococcus bacteria, he observed that a mould contaminating his bacterial culture inhibited the growth of the bacteria. Upon closer examination, he identified the mould as Penicillium notatum.