The number of double bonds determine the degree of saturation.
<span>Autocrine </span>
<span>The hormone or chemical
messenger secreted by the cell in form of cell signal that usually binds to the
autocrine receptor on the same cell that automatically leads to the changes in
the cell are known as Autocrine signal. These signals include various factors
that stimulate cell growth and extracellular matrix molecules. </span>
The right answer is B.carbon fixation.
Rubisco, by its full name ribulose-1,5-bisphosphate carboxylase / oxygenase, is the key enzyme for the fixation of carbon dioxide CO2 in plant biomass by initiating the Calvin cycle, in relation to the solar energy captured. by the chlorophyll at the origin of the processes of photosynthesis. It catalyzes both carboxylation and oxidation of ribulose-1,5-bisphosphate.