test 2 p2 Flashcards
What is cellular respiration?
Respiration that occurs within cells
How many hours a day does respiration occur?
24 hours
What type of reaction is respiration?
Exothermic
What is an exothermic reaction?
A reaction where energy is transferred to the surroundings.
What is an endothermic reaction?
A reaction that takes in energy from its surroundings
Why is respiration necessary for living things?
It transfers all the energy needed for living processes
Why do living organisms need energy?
To keep warm, for movement, for chemical reactions
What is aerobic respiration?
The process of transferring energy from glucose using oxygen that occurs continuously in living cells
That does aerobic mean?
With oxygen
What is the word equation for aerobic respiration?
glucose + oxygen –> carbon dioxide + water
What happens during aerobic respiration?
Aerobic respiration occurs inside mitochondria continuously. Glucose is oxidised to transfer the energy the organism needs to perform its functions.
Aerobic respiration releases a large amount of energy from each glucose molecule.
What is the energy transferred from aerobic respiration used for?
It is used by organisms to make larger molecules from smaller ones, active transport, muscle contraction and maintaining body temperature
