Bioenergetics Flashcards
what is the equation for photosynthesis word equation
carbon dioxide +water->glucose+ oxygen
give 3 uses of glucose
cellulose for cell walls
respiration
oils and lipids for storage
starch for storage
proteins for growth
what colour does a leaf go when iodine is added
black
what are the 4 steps of testing a leaf for starch
place it in boiling water for 1 minute
place leaf in test tube full of ethanol and then put the tube in hot water for 10 mins
return leaf to hot water for a minute
spread leaf onto petri dish and cover in iodine
what colour would an iodine stained leaf go after being in the dark for 48 hours
white
why is ethanol added to the starch leaf expermient
to remove chlorophyll to see colour change
why is starch used to test a leaf
it shows signs that it has be photosynthesising
what happens to the number of bubbles per minute as a light source is moved away from the pondweed
decrease
what is the equation linking light intensity and distance
LI=1/distance^2
what is a limiting factor in photosynthesis
anything that slows it down
what can be limiting factors of photosynthesis
temp
amount of co2
light
how do green houses help grow plants
helps keep suns heat in
artificial light
can make co2 through burning
keeps free from pests
what is the symbol equation for photosynthesis
6CO2+6H20->C6H1206+6O2
what is the fuel supplied by the digestive system
glucose
what does the body need for releasing energy
glucose and oxygen
what is respiration
the process used by the bodies cells to release chemical energy stored in glucose
what does aerobic mean
with oxygen
what does anaerobic mean
without oxygen
what is aerobic respiration
a process that generates enough energy to supply the whole body
what property does mitochondria have to help it carry out a faster rate rate of respiration
large surface area
which cell does aerobic respiration take place
mitochondria
why is aerobic respiration an exothermic reactio
as energy is transferred to the environment
is respiration the same as breathing
no
do plants respire
yes
