bioenergetics

Created by

evie wrennall

Cards (15)

exothermic
reactions that release / heat into the environment
endothermic
reactions that take in heat / require heat energy
aerobic respiration
respiration that uses oxygen to release energy from glucose
anaerobic respiration
respiration that takes place without respiration producing energy and lactic acid
fermentation 
the conversion of sugar to alcohol and carbon dioxide in yeast
lactic acid  
a compound produced when cells respire without oxygen [anaerobically]
oxygen debt  
oxygen deficiency caused by anaerobic respiration during intense / vigorous exercise
metabolism  
the sum of all the chemical reactions occurring in the body
the process of anaerobic respiration is different in animals to that found in plants and yeast. 
in animals: glucose ---> lactic acid
in plants and yeast: glucose ---> ethanol + carbon dioxide
photosynthesis  
equation = carbon dioxide + water ----> glucose + water
light
CO2 + H2O ---> C6H12O6 + O2
chlorophyll 
the green pigment found in most plants = responsible for photosynthesis
factors affecting photosynthesis  
temperature = as the temperature increases so does the rate of photosynthesis.
As the temp reaches 45 degrees the rate of photosynthesis drops to zero as the enzymes controlling photosynthesis have been destroyed.
factors affecting photosynthesis  
carbon dioxide = as the concentration of carbon dioxide so does the rate of photosynthesis
factors affecting photosynthesis  
light intensity = as the light intensity increases so does the rate of photosynthesis
exercise and respiration  
during exercise the heart rate, breathing rate and the breath volume all increase to supply muscles with more oxygen and glucose for the increase in aerobic respiration.
during periods of vigarous activity, the muscles may not get supplied with enough oxygen, so anaerobic respiration starts to take place in the muscle cells.
^ this causes a build up of lactic acid and creates an oxygen-debt.