B2.4 Energy From Respiration Flashcards
What is the word equation for aerobic respiration?
Oxygen + glucose –energy–> carbon dioxide + water +(energy)
Define respiration
A chemical reaction that happens in all living things which releases energy in the presence of oxygen
What’s the difference between breathing and respiration?
Breathing is a muscular contraction whereas respiration is the chemical reaction
Where does respiration occur?
Mitochondria
How are mitochondria adapted for respiration?
Rod-shaped
Folded inner membrane provides and large surface area
They have a matrix
Why do we need respiration?
Digestion - muscle contraction in stomach
Growing
Building up new cell material
Muscles contract when you breathe keeping your heart beating
To keep your body at a constant temperature - energy is used to sweat
What is the respiration energy used for?
Constant temperature
Growth
Movement
Digestion
How do you test for CO2
Limewater turns cloudy
How do you test for water
Cobalt chloride paper goes from blue to pink
Define heart rate
Define breathing rate
The number of heartbeats per minute
The number of breaths per minute
Why does your heart rate increase during exercise?
It needs to get your blood around your body quicker and get oxygen to your muscles and remove CO2
Why does your breathing rate increase during exercise?
Your body needs more oxygen in your body and muscles and you need to exhale more carbon dioxide
What’s glycogen?
It’s where your muscles store glucose. It converts into glucose when you exercise which is used for aerobic respiration
Found in the liver also
What are the benefits of exercise?
Your heart and lungs become larger and stronger You get a more efficient blood supply Stress-relief It releases happy hormones Weight loss
Why do you get hungry after exercising?
You use up energy when you exercise and need the energy in food to restore your body
