Unit 12 - Respiration

Question 1

Respiration

Answer 1

The break down of nutrient molecules to release energy

Question 2

Needs for the energy released by respiration

Answer 2

Muscle contraction, protein synthesis, cell division & growth, active transport, passage of nerve impulses, maintenance of body temperature

Question 3

Substance required for aerobic respiration

Answer 3

Oxygen

Question 4

Location of respiration

Answer 4

Occurs in Mitochondria

Question 5

Word equation for aerobic respiration

Answer 5

Glucose + Oxygen –> Carbon dioxide + Water

Question 6

Chemical equation for aerobic respiration

Answer 6

C6H12O6+6O2 –> 6CO2+6H20

Question 7

Anaerobic respiration

Answer 7

Does not involve oxygen

Question 8

Efficiency of anaerobic respiration

Answer 8

Much less energy released per glucose molecule used than aerobic respiration

Question 9

Word Equation for anaerobic respiration in muscles

Answer 9

Glucose –> Lactic acid

Question 10

Symbol Equation for anaerobic respiration in muscles

Answer 10

C6H12O6 –> 2C3H6O3

Question 11

Word equation for anaerobic respiration in yeast

Answer 11

Glucose –> ethanol + carbon dioxide

Question 12

Symbol equation for anaerobic respiration in yeast

Answer 12

C6H12O6 –> 2C2H5OH + 2CO2

Question 13

How the body removes lactic acid

Answer 13

• Aerobic respiration in the liver to break lactic acid into carbon dioxide and water
• Maintaining a higher heart rate after exercise stopped so lactic acid can be transported to the liver
  -Maintaining deeper and faster breathing to provide oxygen to the liver to break down lactic acid

Question 14

Oxygen debt

Answer 14

Amount of oxygen needed to break down the lactic acid in the liver