chemiosmotic hypothesis Flashcards
where is NADP molecule located
on the stroma side of the membrane
what are the products of light reaction ?
ATP, NADPH & 02
when does bio synthetic phase start ?
immidiately after light is unavailable
is biosynthetic phase a dark reaction?
yes
who led to the discovery that first product of co2 fixation is a 3 carbon organic molecule
melvin calvin
melvin calvin used which isotope of carbon and what organism
14c and used algae
what was the 3 carbon molecule that was the first product of co2 fixation
3- phosphoglyceric acid / PGA
what was the 4 carbon molecule that was the first product of co2 fixation in another plants
oxaloacetic acid/ OAA
how many carbon atoms did the acceptor of PGA have? what was its name? what biomolecule is it?
5 carbon
rubilose bisphosphate
5-carbon ketose sugar
what are the steps involved in calvin cycle
carboxylation
reduction
regeneration
which is the most crucial step of calvin cycle?
carboxylation
in carboxylation co2 is utilised for the carboxylation of _. and this reaction is catalysed by the enzyme _ and the product is _
RuBP
RuBP carboxylase- oxygenase RuBPCO
3-PGA
what is carboxylation
fixation of co2 into a stable organic intermediate
how many molecules of ATP does phosphorylation involve
2
how many molecules of NADPH is required for reduction of co2
2
how many turns of calvin cycle and molecules of co2 are required for one molecule of glucose
6 co2 6 cycles
the regeneration step involves how many molecules of atp
1
what is regenerated in the regeneration process
RuBP
to make one molecule of glucose 6 turns of cycles are required. so how many ATP &NADPH will be required for one molecule of glucose ?
12 NADPH
18 ATP
how many molecules of atp and nadph required for fixing 1 molecule of co2
2 nadph and 3 atp
what type of plants do we see in dry tropical areas
C4
the large cells around the vascular bundles of the c4 plants are called ?
bundle sheath cells
the large cells around the vascular bundles of the c4 plants are called ? and the leaves with such anatomy is called ?
bundle sheath cells
kranz anatomy
what does kranz mean
wreath
how are bundle sheath cells charecterised
by forming layers around vascular bundle cells and having large number of chloroplasts , thick walls impervious to gaseous exchange and no intercellular spaces
give example of c4 plants
maize and sorghum
is hatch and slack a cyclic process
yes
what is the primary acceptor in hatch slack pathway? and where is it present ?
3 carbon molecule phosphoenol pyruvate
present in mesophyll cells
mesophyll cells lack ___ enzyme in c4 plants
RuBisCO enzyme
OAA is formed in which cells
mesophyll cells
the bundle sheath cells are rich in which enzyme but lack ?
rubisco
PEPcase
which pathway is common to c3 and 4 plants
calvin pathway
calvin pathway in c3 plants take place in __ and in c4 takes place in
c3- mesophyll
c4 - bundle sheath cells
