stages in cyclic photophosphorylation

The electrons released by P 7 0 0 of PS-I in the presence of light are taken up by the primary acceptor and are then passed on to ferredoxin (Fd), plastoquinone (PQ), cytochrome complex, plastocyanin (PC) and finally back to P 7 0 0 i.e., electrons come back to the same molecule after c..

Photosynthetic phosphorylation or photophosphorylation is the process of phosphate group transfer into ADP to synthesize energy rich ATP molecule making use of light as external energy source. According to chemi osmotic hypothesis (Mitchell 1961) the ATP is synthesized on ATPase complexes..

The electrons lost by P 6 8 0 (PS-II) are taken up by P 7 0 0 (PS-I) and do not get back to P 6 8 0 i.e., unidirectional and hence it is called non- cyclic phosphorylation. The electrons pass through the primary acceptor, plastoquinone (PQ), cytochrome complex, plastocyanin (PC) and final..

Every cell that is capable of undergoing division passes through a cyclic sequence of events involving growth and division. It is called Cell Cycle. It encompasses the entire sequence of events that occur in a cell from the time it is formed from its parent cell till the time of its own d..

Equation of photosynthesis ..

. The property of enlargement of penis during sexual excitement and later contraction to normal size is attained at this stage. In girls, during adolescence, many morphological changes occur. Puberty sets in between 10 - 14 years. It is characterised by the beginning of ovulation and the menst..

. The first half of the phase and the changes in these phases are controlled by estrogens and progesterone. The secretion of these hormones occur cyclically because of the cyclic secretions of pituitary gonadotropins in the female. The fertilised ovum in mammals and other higher..

. The gas is isothermally expanded to a state b (figure b). Work is done by the gas and an amount of heat Q 1 is supplied to it by the body at temperature T 1 . The cylinder is now kept on an adiabatic platform and the gas is allowed to expand further to the state c (figure c). This is an adiabatic..

Silicones - Silicones are polymeric compounds containing Si-O-Si linkages. These have the general formula (R 2 SiO) n . These may be linear cyclic or cross-linked. These have very high thermal stability and are called high temperature polymers (R may be alkyl or phenyl group). The startin..