Respiration Flashcards
What is the equation for aerobic respiration?
Glucose + oxygen > carbon dioxide + water (+energy)
Needs oxygen
What is the equation for anaerobic respiration?
Glucose > lactoc acid (+energy)
What is the equation for respiration in plants and yeast?
Glucose > ethanol + carbon dioxide
What do organisms need energy for?
Keep warm
Movement
Chemical reactions/ build up large molecules
What does atp do?
Transfers energy from energy rich substances in the cell to cells energy requiring reactions
What happens once atp breaks down?
Energy created is used by cell for precesses such as active transport/ dna replication/ muscle contraction
What is OIL RIG?
Oxidation
Is
Loss = removal hydrogen
Energy released
Reduction
Is
Gain = addition of hydrogen
Energy used up
What is respiration?
Series of reactions in which 6 carbon glucose is oxidised to form carbon dioxide
Energy release from oxidation of glucose used to synthesize ATP from ADP and phosphate
What is mitochondria?
Site of respiration
What are the features of aerobic respiration?
Oxygen
Most cells
Lots of energy released
Produces carbon dioxide/ water/ ATP
Cytoplasm and mitochondria sites of respiration
No ethanol/ lactic acid
What are the features of anaerobic respiration?
No oxygen
Ethanol/ lactic acid
Less energy per glucose molecule
In plants and some microorganisms
In yeast= bread making/ brewing
What happens in breadmaking?
Bubbles of carbon dioxide gas expand dough and help bread rise
What affects rate of respiration?
Temperature
Ph
Because enzymes are involved in respiration and activity varies on temperature and ph
What is oxygen debt?
Anaerobic respiration produces oxygen debt
Amount of oxygen needed to oxidise lactic acid to carbon dioxide and water
Explains why we breathe deeply and quickly during exercise and for a while after
Build up of lactic acid in muscles during vigorous exercise lactic acid needs to be oxidised to carbon dioxide and water
