How many pigment molecules constitute a single photosystem?
2500
250-400
2000
2
B.
250-400
Photosystem I and Photosystem II consists of 250 - 400 pigment molecules each.
Photosystems are functional and structural units of protein complexes involved in photosynthesis that together carry out the primary photochemistry of photosynthesis, i.e. the absorption of light and transfer of energy and electrons.
Which of the following is formed in light reaction of photosynthesis?
ATP
NADPH2
O2
All of the above
The carboxylating enzyme present in bundle sheath cells of maize leaves is
RUBP carboxylase
hexokinase
carbonic anhydrase
PEP-carboxylase
Oxygen released in photosynthesis comes outby
photophosphorylation
photolysis of water
photorespiration
Kelvin cycle
As compared to sun plants, the plants, which are adopted to low light intensity possess
more extended root system
very high rate of CO2 fixation
larger photosynthetic units
more extended shoot system
First transistory chemical formed by reaction between CO2 and RUBP is
PGA
PGAL/ GAP
dihydroxy acetone phosphate
2 carboxy, 3-keto, 1-5 biphosphoribotol
