a) 3 molecule of carbon dioxide (CO2) - 3 carbon atoms
b) 6 molecule of 3 - PGA - 18 carbon atoms ( 3 cabon atoms in 1 3 PGA molecule)
c) 6 molecule og G3P - 18 carbon atom ( 3 carbon atoms in G3P molecule )
d) 5 molecules of G3P - 15 carbon atom
e) 3 molecule of R5P - 15 carbon atoms ( 5 carbon atom of R5P olecule )
f) 3 molecule of RuBP - 15 carbon atoms ( r carbon atom of RuBp molecule )
Lead has a different chemistry than most biological metals, but it can mimic some of them, such as calcium, iron, and zinc, because it tends to form 2+ ion like other metals, and these can be formed inside the body. Due to it different chemistry, lead prevents normal functioning of the enzymes it binds to, inhibiting them and poisoning the body.
Gold rarely forms ions, unless under extreme conditions that are not present in the human body. Gold ions, when ingested, are actually very toxic, so gold poisoning is possible. But because gold are so rare, gold poisoning is also a rare phenomenon.
It is a chain of amino acids and the subunit of a protein
Both atoms must be non-metals,
Both atoms must have an incomplete outer energy level / shell of electrons