Based on the information given in Section 14.3 of your NCERT textbook, can you identify the chemical reaction catalyzed by the enzyme alcohol dehydrogenase?
1.${\mathrm{C}}_{12}{\mathrm{H}}_{22}{\mathrm{O}}_{11}+{\mathrm{H}}_2\mathrm{O}\to 2{\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6$
2.${\mathrm{CH}}_3{\mathrm{COCOO}}^{-}+{\mathrm{H}}^{+}\to {\mathrm{CH}}_3\mathrm{CHO}+{\mathrm{CO}}_2$
3. ${\mathrm{CH}}_3\mathrm{CHO}+\mathrm{NADH}+{\mathrm{H}}^{+}\to {\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}+{\mathrm{NAD}}^{+}$
4. None of these

Assertion: Homolactic fermentation (producing only lactic acid) is the simplest type of fermentation.
Reason: It is one of the only respiration processes to not produce a gas as a byproduct.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: When a glucose fed yeast is transferred from aerobic to anaerobic medium its rate of glucose consumption decreases.
Reason: It starts metabolizing lactose and stops using glucose in anaerobic conditions.

1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.