Identify the correct facts about application of microbes in human welfare.
(A) Lactic acid bacteria grow in milk and convert it to curd.
(B) Saccharomyces cerevisiae is used for bread-making.
(C) Streptokinase is produced by Clostridium butylicum, is used as clot buster.
(D) Cyclosporin A, used as immunosuppressive agent, is produced by Trichoderma polysporum.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A), (B) and (D) only
(A) Lactic acid bacteria grow in milk and convert it to curd. — Correct. The bacteria make lactic acid, which sets the milk into curd.
(B) Saccharomyces cerevisiae is used for bread-making. — Correct. This is baker’s yeast. It ferments the dough and releases CO2, which makes the dough rise.
(C) Streptokinase is produced by Clostridium butylicum, is used as clot buster. — Incorrect. Streptokinase is used as a clot buster, but it is made by Streptococcus. Clostridium butylicum is the source of butyric acid.
(D) Cyclosporin A, used as immunosuppressive agent, is produced by Trichoderma polysporum. — Correct. Cyclosporin A is given to organ transplant patients so that the body does not reject the new organ.