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Which of the following enzymes is very important in determining the partitioning of glyceraldehyle-3-phosphate/dihydroxy acetone phosphate between...

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Biology

Which of the following enzymes is very important in determiningthe partitioning of glyceraldehyle-3-phosphate/dihydroxy acetonephosphate between starch synthesis and sucrose synthesis

Aquaporins

G3P/DHAP efflux channel

RubisCO

Triose-phosphate translocator

ATPases

The accumulation of phosphorylated sugars in the cytoplasmwill

Increase the activity of certain key Calvin Cycle enzymes

Promote export of phosphorylated sugars in the phloem

Promote export of triose-P from the chloroplast

Promote starch synthesis in the chloroplast

Promote starch degradation in the chloroplast

A tomato fruit growing on a vine will receive most of itsnutrients and water from

The xylem

Storage reserves such as seeds and tubers

All regions of the plant more or less equally

Its own photosynthetic capabilities

The mature leaves closest to it

What is true of phloem sieve tubes

They are dead at maturity

They are cytoplasmically dense

They are membrane lined

None of the above

B and C only

Answer & Explanation Solved by verified expert
4.4 Ratings (838 Votes)
Which of the following enzymes is very important in determining the partitioning of glyceraldehyde3phosphatedihydroxyacetone phosphate between starch synthesis and sucrose synthesis Answer Triosephosphate translocator Explanation Starch synthesis takes place inside the chloroplast while sucrose synthesis takes place in the cytosol of green cells both of them need for dihydroxyacetone phosphate a triose phosphate to be transported to the chloroplast or the cytosol depending on what will be synthesized The triose phosphate translocator located in the chloroplasts membrane exports dihydroxyacetone phosphate and therefore is very important in determining the partitioning of glyceraldehyde3phosphatedihydroxyacetone phosphate between starch synthesis and sucrose synthesis    See Answer
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