Which word will best complete the relationship given below?
Bacteria : Decomposition :: Yeast : ?

Correct option is C

Decomposition is a process of decay of something with the help of bacteria.
Similarly,
The chemical breakdown of a substance involving yeast is called fermentation.
Hence, "fermentation" is the correct answer.

1. Eruption (Option A):

• Meaning: Eruption typically refers to a violent outburst, such as a volcanic eruption.
• Why it doesn't fit: Eruption is not a biological process related to yeast. It’s completely unrelated to the natural function of yeast in processes like fermentation.

2. Injection (Option B):

• Meaning: Injection refers to the act of introducing something, typically fluids or drugs, into the body using a needle.
• Why it doesn't fit: Injection is a medical procedure and has no connection to yeast or its biological processes.

3. Fermentation (Option C):

• Meaning: Fermentation is the process where yeast breaks down sugars to produce alcohol and carbon dioxide, used in baking, brewing, and winemaking.
• Why it fits: This is the primary biological process associated with yeast, just as decomposition is associated with bacteria.

4. Conservation (Option D):

• Meaning: Conservation refers to the protection and preservation of resources.
• Why it doesn't fit: Conservation is unrelated to the biological function of yeast, which is associated with fermentation rather than preservation.

Correct Answer:

• Fermentation (Option C) is the correct answer as it describes the key biological process related to yeast, just as decomposition relates to bacteria.

S1. Ans. (C) Fermentation