Discussion of all aspects of cellular structure, physiology and communication.
the first is Phospoglyceraldehyde(PGAL) then plant can polymers it to be fat, carbohydrate, and protein. this is in my highschool... actually at 3rd class
and _at_ Dr.Stein...
you look like Dr. Stein as i know before...
you still not change.
Who many carbon atoms does Phospoglyceraldehyde have? Because, if you read my post you will see i said fructose is the first hexose to be formed in photosynthesis. And last time i checked PGAL had 3 carbons.. Have a look at a book that has a biochemical approach on photosynthesis...
From phosphogliceric acid, after investing one molecule of NADPH, you get this 3-phosphogliceric aldehide, that is the first sugar, with 3 carbon atoms(remember that it needs to have a carbonil bond to be a sugar, phosphoglyceric acid still has a carboxyl bond so it is an acid). From this compound, fructose-6-phosphate is synthesised. After passing through a series of instable sugars with number of carbon atoms ranging from 3 to 8, there are 2 compunds formed:
1. glucose-6-phosphate- which can be turned into sucrose or used to form normal glucose, who in turn can be used for various types of processes, including synthesis of lipids and proteins
2.glucose-1-phosphate, which, if there is excess glucose, is turned into starch.
Our blood does contain C5, like ribose and dezoxiribose, which are traveling from the digestive tract to various cells. Fructose is a different molecule than glucose, but it is still a hexoze.
My question was not refering to the digestive process, it was reffering to the cellular biochemical process...
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
G3P is often referred to as 3-phosphoglyceraldehyde (PGAL) with respect to the product of photosynthetic carbon fixation during the Calvin cycle.
During plant photosynthesis, two molecules of glycerate 3-phosphate (GP, but also known as 3-phosphoglycerate (PGA)) are produced by the first step of the light-independent reactions when ribulose 1,5-bisphosphate (RuBP) and carbon dioxide are catalysed by the rubisco enzyme. The GP is converted to PGAL using the energy in ATP and the reducing power of NADPH as part of the Calvin cycle. This returns ADP, Pi, and NADP+ to the light-dependent reactions of photosynthesis for their continued functioning.
PGAL can then be converted to glucose. RuBP is regenerated for the Calvin cycle to continue.
PGAL is generally considered the prime end-product of photosynthesis and it can be used as an immediate food nutrient, combined and rearranged to form monosaccharide sugars, such as glucose, which can be transported to other cells, or packaged for storage as insoluble polysaccharides such as starch.
PGAL is related primarily to autotrophic nutrition.
6 CO2 + 6 RuBP (+ energy from 12 ATP and 12 NADPH) → 12 PGAL (3-carbon)
10 PGAL (+ energy from 6 ATP) → 6 RuBP (ie starting material regenerated)
2 PGAL → glucose (6-carbon).
The color scheme is as follows: enzymes, coenzymes, substrate names, metal ions, inorganic molecules, inhibition and attached phosphate, stimulation
ok, i'm sorry
you are right that this is used to skip the reaction. is is more faster than using glucose.
about why not fructose..
just the same as Canalon said
it is not better than glucose if it is exist in human body...-metazoan organism.
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