glyceraldehyde-3-phosphate (G3P)
One G3P molecule exits the Calvin Cycle after three turns.
Three turns of the Calvin Cycle are required to produce a G3P molecule that can be utilized in the synthesis of glucose.
Six turns of the Calvin Cycle are required to produce one molecule of glucose.
Six turns of the Calvin cycle are required to produce a molecule of glucose.
Dear friend, in Calvin cycle only two kinds of trioses (3C sugars) are formed. In fact, these are not sugars but phospoesters. One is phospoglyceraldehyde and second is dihydroxyacetone phosphate. These are isomers of each other.
Six turns of the Calvin Cycle are required to produce one glucose molecule.
Six turns of the Calvin Cycle are required to produce one molecule of glucose.
I'm pretty sure that it takes 2 PGAL's to make 1 glucose . It takes 6 turns of the Calvin cycle since 3 turns give you 1 PGAL.
The Calvin cycle turns once during photosynthesis.
One molecule of PGAL has 3 carbons in it (therefore three turns are necessary). Six molecules would therefore require 18 turns of the Calvin Cycle.
Three turns of the Calvin cycle produce one molecule of glyceraldehyde-3-phosphate (G3P), a three-carbon sugar. During these turns, carbon dioxide is fixed into organic molecules, which are then converted through a series of reactions using ATP and NADPH generated in the light-dependent reactions of photosynthesis. Specifically, six carbon dioxide molecules are needed to ultimately yield two G3P molecules, which can be used to form glucose and other carbohydrates.
== == Technically speaking, three turns of the Calvin cycle produce one Glyceraldehyde-3-phosphate (G3P). Each turn of the Calvin Cycle uses 1 CO2. So three CO2 (3 cycles) for 1 G3P. Since 2 G3P are needed for 1 molecule of glucose = six molecules of CO2. As a side note, for one molecule of glucose= requires 6 CO2 + 18 molecules of ATP + 12 molecules of NADPH. (Source: Campbell and Reece, 2005)