Carbohydrates and fats
a. can be used as an energy source by organisms
b. can be bonded together to construct dna molecules
c. are made up of the glucose monomer
d. are monomers that can be made into large polymer chains

what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

i believe the answer would be b. hope it : )