B9 Flashcards
What type of reaction in aerobic and how can it be summarised
Exothermic
Glucose+oxygen—> carbon dioxide + water
What is the energy that is transferred during respiration used for?
Used to enable muscles to contract
During exercise what does the human body respond to ?
To the increased demand for energy
One Body responses of exercise is :
Increase in the heart rate, breathing rate and breath volume
Another way the body responds to exercise is
Glycogen stores in the muscles are converted to glucose for cellular respiration
What happens to muscles when
A) they dont get enough oxygen
B)they work hard for a long time
A) respire anaerobically
B) they become fatigued
What is anaerobic respiration
Respiration without oxygen
What happens when anaerobic respiration takes place
In the animal cell , the glucose is incompletely broken down to form lactic acid
Does the anaerobic breakdown of glucose transfer less or more energy than aerobic respiration
Less
HIGHER TIER:
after exercise oxygen is still needed to convert the accumulated lactic acid back into…?
Glucose.
The amount of oxygen needed is known as the oxygen debt
What is metabolism
The sum of all the reactants in your body
Blood flowing through muscle transports lactic acid to the liver where what is converted back to?
Converted back to glucose
