ANAEROBIC RESPIRATION LESSON 6

Question 1

WHAT IS ANAEROBIC RESPIRATION

Answer 1

it is a metabolic pathway such as glycolysis, krebs and etc in which an inorganic molecule OTHER than oxygen is sued as the final electron accetor during the chemiosmotic csynthesis of ATP

Question 2

WHAT IS FERMENTATION

Answer 2

• fermintation is a cellular respiration pathway that transfers electrons from nadh produced during glycolysis to an organic acceptor molecule
  much less efficient at supplying energy than aerbic respiraiton… only produces the amount of atp(2) that isgenerated in glycolysis

Question 3

lactate fermentation

Answer 3

• carried out by some single celled organisms and some animal muscle cells taht are temporarily without oxygen
  1. the pyruvate reacts with nadh to reoxidizw it to nad+ whiole being converted to lactate
  2. the reoxidzed nad+ allows glycolysis to continue
  3. the lactate is secreted into the surrounding medium
  4. in animals, oxygen is required to metabolize the lactate. the amount required is called oxygen debt

Question 4

ethanol fermentation

Answer 4

yeast and some bacteria carry out ethanol (alcohol) fermentation when aerbic respiration cannot be performmed. these organisms are called facultative anaerobes.
1. the pyruvate loses a co2 and is converted to acetaldehyde.
2. acetaldeyhyde is reduced to ethanol and nadh is oxidized to nad
3. the products of ethanol fermentaiton are used in foods and drink industry to produe desired reuslts in breads, wines and beers

Question 5

homework pls

Answer 5

do pg 137 #1-7 and pg 9
review notes
complete mc questions in textbook
pg147-148
pg152-153