photosynthesis - bioenergetics - biology Flashcards
What is the equation for photosynthesis?
carbon dioxide + water = (light) glucose + oxygen
(include formula symbols as well)
what is an endothermic reaction?
the energy that is transferred from the environment to the chloroplasts by light
what do plants use to make protein?
nitrate ions that are absorbed from the soil
what are the 5 things the glucose produced by photosynthesis can be used for In plants
used for respiration
converts into insoluble starch for storage
glucose can be used to produce fats and oils for storage
glucose can be used to produce cellulose that strengths the cell wall
glucose can be used to produce proteins from amino acids
what is the role of chlorophyll?
to absorb light energy for photosynthesis
what are the 3 things that can limit the amount of chlorophyll produced?
tobacco mosaic virus
lack of nutrients
environmental stress
what 4 components affect the rate of photosynthesis?
light intensity, temperature, carbon dioxide and chlorophyll
what is the scientific terminology for when light intensity reaches a certain point?
plateaued
what is different about the temperature graph?
what will be the rate of photosynthesis then?
it has enzymes and molecules that move and vibrate at first but then become denatured at 45 degrees
the rate of photosynthesis will be 0
what are the 4 things farmers do to keep their crops healthy?
They use greenhouse gases to trap the sun’s heat energy
They pump out carbon dioxide using a paraffin heater which releases carbon dioxide but also heat
They use artificial light to keep photosynthesis going
They use fertilisers to keep the soil nourished
what is the downside of these 4 things?
it is very expensive
