Question

Read the following statement and choose the correct answer from the options given below:
(A). In MacConkey agar, Escherichia coli is used as +ve control organism.
(B). Clostridium botulinum, an anaerobic organism, may produce some growth on the surface of an aerobic bacteria supporting agar plate.
(C). In Candle Jar method, carbon dioxide gas is produced inside the Candle Jar, which stimulates the growth of bacteria.
(D). The popular but ineffective anaerobic culture method is biological method.
Choose the correct answer from the options given below:

• (A) and (D) only.
• (B) and (C) only
• (A) and (C) only
• (C) and (D) only

Hint:

The Candle Jar method is widely used for growing anaerobic bacteria in a controlled environment

Answer 1

The Correct Option is C

MacConkey agar utilizes E. coli as a positive control, and the Candle Jar method generates CO2 to promote bacterial growth.