Bioenergetics Flashcards
word equation for photosynthesis
carbon dioxide + water –> glucose + oxygen
symbol equation for photosynthesis
6CO2 + 6H20 –> C6H12O6 + 6O2
what are the 5 ways that plants use glucose
Cellulose
Respiration
Oils and lipids (seeds)
Proteins
Starch (stored)
what are the limiting factors of photosynthesis
light - up to a certain point
CO2 - up to a certain point
temperature - up to a certain point
and sometimes chlorophyll
Where does the energy for photosynthesis come from
the sun
What is the inverse square law
The equation that links light intensity at distance
light intensity is proportional to 1/ distance ^2
How to artificially create the ideal conditions for farming
greenhouses to make sure that temperature isn’t limiting
artificial light to increase time for photosynthesis
paraffin for CO2
fertilisers to provide minerals
what is respiration
the exothermic process of transferring energy from glucose which goes on in every cell
examples of how the energy from respiration is used
to build up larger molecules (like proteins from amino acids)
allow muscles to contract
homeostasis in mammals and birds
What is metabolism
All of the chemical reactions in an organism
What are lipid molecules made from
1 molecule of glycerol and 3 fatty acids
What happens in some metabolism reactions (size of the molecules)
Larger molecules are made from smaller ones
eg lipid molecules formed
Large molecules are broken down into smaller ones
eg excess protein broken down into urea
equations for aerobic respiration
glucose + oxygen –> carbon dioxide + water
C6H12O6 + 6O2 –> 6CO2 + 6H2O
what happens in respiration if there’s not enough oxygen
anaerobic respiration takes place
anaerobic respiration in plants and yeast (fermentation)
glucose –> ethanol + carbon dioxide
