Respiration B1 Flashcards
What is respiration in simple terms?
Respiration involves breaking apart glucose molecules to release the energy that’s trapped inside.
Is respiration endothermic or exothermic?
Exothermic
How do organisms use their energy from respiration?
For maintaining body temperature, for muscular contraction and to build large molecules (polymers) from smaller ones (monomers).
What is meant by metabolism?
Metabolism is all the chemical processes that occur within a living organism to maintain life.
What are some characteristics of aerobic respiration?
Aerobic respiration is the most efficient way to transfer energy from glucose, producing 32 ATP molecules per molecule of glucose. It cannot use energy transferred by respiration directly so stores it in the form ATP. It takes place continuously in plants and animals and happens in the mitochondria.
What is the aerobic respiration equation?
Glucose + Oxygen -> Carbon Dioxide + Water
What is the equation for anaerobic respiration?
Glucose ——> Lactic acid
What is lactic acid and what does it do?
Lactic acid is produced in anaerobic respiration and it makes yours muscles fatigued however it allows you to exercise longer. It must be removed after anaerobic respiration.
What is anaerobic respiration in simple terms?
It is the incomplete breakdown of glucose molecules as there is not enough oxygen to oxidise it, so we don’t unlock all the energy within the glucose.
What are some characteristics of anaerobic respiration?
We prefer not to use anaerobic respiration. It’s less efficient as it only produces 2 ATP molecules per molecule of glucose.
What is the equation for anaerobic respiration in plants and yeast?
Glucose ——> Ethanol + Carbon Dioxide
When may plants have to resort to anaerobic respiration?
In times where there is little to no oxygen, e.g. waterlogged soils.
