FERMENTATION SCIENCE EXAM QUESTIONS AND ANSWERS

FERMENTATION EXAM QUESTIONS AND ANSWERS
Fermentation definition - ANS - 1. the production of energy in the absence of oxygen

2. a process that allows glycolysis to continue making ATP when oxygen isnt present



what's going on in fermentation? - ANS - NADH is converted back to NAD+ by adding the extra electrons
in NADH to an organic molecule that acts as an electron acceptor



What are the 2 fermentation pathways eukaryotic cells use to change NADH to NAD+ - ANS - Lactic Acid
Fermentation

Alcoholic Fermentation



Lactic Acid Fermentation Step 1 - ANS - Pyruvic Acid from glycolysis is converted to lactic acid:

Pyruvic acid + NADH--->lactic acid + NAD+



Lactic Acid Definition - ANS - produced in muscles during rapid exercise when the body can't supply
enough O2 to the tissues to produce all the ATP that is required



What Does Lactic Acid Do? (4) - ANS - 1. the build up of L.A causes painful sensation in your muscles.

2. the muscles run out of oxygen

3. your muscle cells rapidly begin to make ATP by fermentation

4. the LA that is produced is a waste product- builds up...causing the aching and soreness



Alcoholic Fermentation Definition - ANS - Yeast undergoes alcoholic fermentation and produces alcohol
and CO2.



What is the by product used by? - ANS - brewers



Alcoholic Fermentation Step 1 - ANS - Occurs in yeast