Y10 Aerobic Respiration Flashcards
What is aerobic respiration and why is it important?
Aerobic respiration is the process in which your cells use oxygen and glucose to create ATP, which releases energy
This happens in the presence of oxygen, unlike anaerobic respiration
It is important because our body uses energy all the time—for movement, growth, sleep
This energy comes from the food we eat (glucose) and oxygen
What’s the word equation for aerobic respiration?
Oxygen + glucose —> carbon dioxide + water + ATP
What’s the symbol equation for aerobic respiration?
C6H12O6 + 6O2 —> 6CO2 + 6H2O + ATP
How many molecules of ATP are produced in a reaction?
38 molecules
What happens to the energy that is produced during respiration?
It is transferred into a chemical energy store that is used for all processes in a cell - this chemical energy store is called ATP (Adenosine Triphosphate)
Which organisms use ATP?
All living organisms
What type of process is aerobic respiration?
It is an exothermic reaction because it releases heat
What processes does the body need energy for?
Cell division, homeostasis, active transport, transmission of nerve impulses, movement, body heat, breaking down larger molecules into smaller molecules for digestion
Equation for breaking down of ATP
(Adenosine)—(P)—(P)—💔—(P) + (H2O) —> (Adenosine)—(P)—(P) + P (phosphate group) + chemical energy
Equation for creation of ATP
(Adenosine)—(P)—(P) + P —> (Adenosine)—(P)—(P)—(P) + H2O
What type of molecule is adenosine?
It is an organic molecule (made of carbon)
What is ATP called after it is broken down / before it is created?
ADP (adenosine diphosphate)
What substance helps to break down ATP?
Water (H2O)
What type of energy does the breaking down of ATP release?
Chemical energy
Where in the cell does respiration take place?
Mitochondria and cytoplasm
How is the mitochondria adapted for respiration?
The enzymes that help aerobic respiration occur are found within the folds on the inner membrane
These folds increase the surface area which makes the process more efficient
Aerobic respiration requires enzymes to happen, which makes it an enzyme-controlled reaction. What would happen if there was not enough enzyme?
The rate of reaction would decrease
Number of enzymes is a limiting factor
Why do muscle cells have more mitochondria than other cell types?
They need more mitochondria to produce ATP for movement + contraction
