Respiration Flashcards
Define aerobic respiration
The chemical reaction in cells that use oxygen to break down nutrient molecules to release energy
Equation of aerobic respiration
glucose+ oxygen+ –> carbon dioxide+ water + energy
C6H12O6+ 6O2–> 6CO2 +6H2O+ 38 ATP
State the uses of energy in the body of humans
Basal metabolism 70%
Metabolizing food 10%
Physical activity 20%
Define anaerobic respiration
The chemical reaction in cells that break down nutrients molecules to release a relatively small amount of energy , in the absence of oxygen
Word equation of anaerobic respiration
glucose–> lactic acid+ carbon dioxide + energy (2ATP)
Describe the production of lactic acid
When muscle cells use energy rapidly
Circulatory system cannot supply enough oxygen
Glucose is converted to energy and lactic acid
Lactic acid builds up
causes: tired muscles and pain
Describe the removal of lactic acid
Breath rapid and large volumes of air.
Lactic acid and oxygen go to the liver where it is oxidised
What is the balanced chemical equation for yeast
C6H12O6–> 2C2H5OH+ 2CO2
Role of anaerobic respiration:
Bread making
Yeast carry out anaerobic respiration
Produce CO2 and ethanol
Makes dough rise
Alcohol evaporates
Role of anaerobic respiration:
Brewing
Yeast carry out anaerobic respiration
Produce CO2 and alcohol
Fermentation