Chap 5: Anaerobic Respiration

Question 1

Without oxygen pyruvate cannot

Answer 1

enter the mitochondria (for aerobic respiration)

Question 2

phenomenon of producing acid or alcohol from pyruvate by the action of NADH is

Answer 2

Fermentation

Question 3

Fermentation : use of pyruvate to make

Answer 3

minimal ATP when there is no O2

Question 4

Two Types of Fermentation in the Body

Answer 4

1) Lactic Acid
2) Alcoholic Fermentation

Question 5

Lactic Acid turns

Answer 5

pyruvate into lactic acid

Question 6

Alcoholic Fermentation turns

Answer 6

pyruvate into ethyl alcohol

Question 7

Lactic Acid —> (Lactate dehydrogenase)

Answer 7

2C3H6O3 (lactic acid) + energy

Question 8

Alcoholic —> (Alcohol dehydrogenase)

Answer 8

2C2H5OH (ethanol) + 2CO2 + energy

Question 9

Lactic Acid Fermentation : in this process NADH

Answer 9

transfers its electrons directly to pyruvate, generating lactate as a byproduct

Question 10

Red blood cells do not contain

Answer 10

mitochondria and only use the lactic acid pathway
(skeletal muscles and heart)

Question 11

Reactants: Pyruvate (CH3COCOOH)
Nicotinamide adenine dinucleotide (NADH)

Answer 11

End Products: Lactic Acid (C3H6O3)
Nicotinamide adenine dinucleotide (NAD+)

Question 12

In alcoholic fermentation, NADH donates its electrons

Answer 12

to a pyruvate derivative producing ethanol in two steps

Question 13

Reactants: Pyruvate (CH3COCOOH)
Nicotinamide adenine dinucleotide (NADH)

Answer 13

End Products: Acetaldehyde (CH3CHO)
Ethanol (C2H5OH)
Nicotinamide adenine dinucleotide (NAD+)
Carbon dioxide (CO2)

Question 14

Advantages of Anaerobic Respiration

Answer 14

• Rapid process (ATP) very quickly
• Allows organisms to live in places with little or no oxygen
  -Etc