B9 - Respiration

Question 1

Describe Effects of exercise on respiration

Answer 1

Higher rate of breath
Higher heart rate
Higher

Question 2

Explain Effects of exorcise on respiration

Answer 2

more muscle contractions = higher energy requirement = higher rate of respiration = more Oxygen and glucose delivery + higher rate of removing C02
Vasodilation - (Increase in blood flow through (to muscles that need it))

Question 3

Anaerobic respiration

Answer 3

when Oxygen demand in muscles exceeds the rate of supply from the lungs/blood, energy is released from glucose without oxygen; anaerobically.
Lactic acid + oxygen > carbon dioxide + water.

Question 4

Compare anaerobic respiration to aerobic.

Answer 4

anaerobic causes muscle fatigue, build up in lactic acid

aerobic respiration - breaks down glucose into energy and water using oxygen.

Question 5

Compare anaerobic respiration in animals, bacteria and yeast

Answer 5

Some microorganisms form lactic acid during anaerobic respiration (i.e. the bacteria used to form yoghurts)
Fermentation – glucose → ethanol + carbon dioxide (energy transferred to the environment)

Question 6

Anaerobic equation

Answer 6

C₆H₁₂O₆+6O₂→6H₂0+6CO₂

Glucose + Oxygen → Water + Carbon Dioxide + (Energy) in ATP

Question 7

where it occurs

Answer 7

inside mitochondria which releases energy from glucose and transfers it to molecules of ATP.

Question 8

define aerobic respiration

Answer 8

•Aerobic respiration is when the energy transferred supplies all the energy needed for living processes (uses oxygen)

Question 9

chemical reaction type

Answer 9

exothermic