What is the least number of carbon atoms a fatty acid can have.

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

a) carbon, hydrogen

b) carbon, hydrogen, oxygen, nitrogen

c) carbon, hydrogen, oxygen, nitrogen, phosphorus

d) sugar

e) amino acid

f) nucleotide

these muscles maintain the blood pressure in the vessels. the smooth muscles are innervated by nerves of the autonomic nervous system. when the muscles contract, they cause vasoconstriction of the vessels and increase blood pressure. when the muscles relax, they enable vasodilation of the   blood vessels hence reduce blood pressure.