Cell Respiration Flashcards
What is respiration?
Breathing in and out
What does respiration do?
Supplies oxygen to the body’s cells & takes away poisonous by-product (carbon dioxide)
What is cell respiration?
Different body cells have different respirations & it is called Cell Respiration
What is movement caused by and what does it need
Muscle Contracting which needs Energy
What does your muscles obtain energy from?
Food
What makes up food
Carbohydrates
Proteins
Fats
Vitamins
Minerals
Fibre
What is the break down of food called ?
Digestion
What does your body use for energy?
Carbohydrates and fats
How are carbohydrates digested
Some glucose is stored in your Liver as
‘glycogen’ & is released when the level of glucose in the blood becomes low
Some glucose is stored in the Muscles as ‘glycogen’ & is converted back to glucose and is used during exercise
What is the difference between
Aerobic & Anaerobic
Respiration
Muscle fibers obtain energy from glucose.
When the process USES oxygen it is called
Aerobic Respiration .
When it DOES NOT use oxygen it is called
Anaerobic Respiration.
How does Aerobic Respiration work?
glucose + oxygen -> carbon dioxide + water + energy
What is Aerobic Respiration used for?
Produces heat therefore warming the body
Used for muscle contraction providing movement
What are the advantages of Aerobic Respiration
A lot of glucose is stored so it can supply energy for long periods of time
There are no dangerous by-products
What are the disadvantages of
Aerobic Respiration
Take 90 seconds for the Aerobic system to fully work
Activities require maximum effort
In activities requiring maximum effort oxygen cannot get to our muscles in time.
What is Anaerobic Respiration used for
During maximum effort, oxygen cannot reach the muscles fast enough so we use anaerobic respiration.
How does Anaerobic Respiration work?
glucose —> energy + lactic acid
The same amount of glucose produces less energy but at a faster rate
What is a advantage of Anaerobic
Respiration ?
Can be used immediately & for powerful contractions
What is a disadvantage of Anaerobic Respiration ?
After 60-90 seconds, lactic acids make muscles tired & painful. Creating Oxygen debt.
What is Oxygen Debt?
The amount of oxygen needed to get the body back to its resting state
What happens to Lactic Acid?
It is turned into carbon dioxide and water and a little back into glucose when enough oxygen is available
How is Oxygen Dept created?
By taking part in maximum-effort activities that require sudden a burst of speed and while waiting for your heart rate & breathing to increase during long events
What is aerobic respiration
Aerobic respiration is the production of energy with using oxygen
What is anaerobic respiration?
The production of energy without using oxygen
