Question

RQ for fermentation in yeast is

• A. 0.0
• B. 1
• C. ∞
• D. >1

Answer 1

The correct option is C ∞

Respiration quotient is the ratio of volume of carbon dioxide produced to the volume of oxygen used.
Fermentation is the process of respiration in the absence of oxygen( anaerobic respiration)

$C_6{H}_{12}{O}_6\to 2C_2{H}_5\mathrm{OH}+2{\mathrm{CO}}_2$
Therefore;
RQ = 2${\mathrm{CO}}_2$/$O_2$ = 2/0 = ∞ or undefined