questions about photosynthesis and cellular respiration

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AZTORI
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questions about photosynthesis and cellular respiration

Post by AZTORI » Wed Nov 30, 2005 8:36 pm

i'm so confused can some one help me out
i have THREE question'z

q1. how could the avaliability of water affect the rate of photosynthesis?

q2.contrast the aerobic and anaerobic pathways of cellular respiration

q3
how are the processes of photosynthesis and cellular respiration alike
ToR!

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Poison
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Post by Poison » Wed Nov 30, 2005 8:47 pm

let's try to help you:

for q1: Think of water's role on photosynthesis, and try to guess it yourself.

for q2: I think you better search the forum or google it to get the complete comparison. but here are the first things that come to my mind:
-In aerobic, net gain is 36-38 ATP; in anaerobic, net gain is 2.
-In aerobic, glucose is completely broken down; in anaerobic, it is not.
-In aerobic you need O2.
-Aerobic respiration uses mitochondria(in eucaryotic organisms), anaerobic don't.

for q3:
They are both metabolic processes.
One takes in O2(in aerobic) , other gives out O2.
photosynthesis need light to occur, respiration does not, it occurs all the time.

All for now. I will add if I remember some more. Hope they are helpful.
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Post by MrMistery » Wed Nov 30, 2005 9:03 pm

q1: actually water is needed in large quantities not only for the synthesis of carbohidrates but also(some even say mainly) because ALL the 8000+ enzymes in photosynthesis works in aqua conditions...
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Post by bacu » Fri Jan 13, 2006 11:44 pm

a shortage of water can slow or even stop photosynthesis.

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Post by Plasma » Sat Jan 14, 2006 2:32 am

Q1: I'm not sure but i think that the more water a plant has the better or faster it will make food> :wink:

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Post by MrMistery » Sat Jan 14, 2006 3:59 pm

Up to a limit, you are right..
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Poison
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Post by Poison » Sat Jan 14, 2006 5:25 pm

If you give too much water, you will probably kill the plant. :)
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Post by MrMistery » Sat Jan 14, 2006 9:03 pm

depends if you realise in time. A plan't root can do anaerobic alcoholic respiration in case of a flood, but after that it dies
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