1.
A. C6H9N3O2
b.
c. Heterocyclic nitrogen and amine groups.
2.
a. C16H21N3
b. They have similar functional groups, both has heterocyclic moiety, amine groups are present. It binds to the receptor and is inactive and does not product biological effect, hence acts as an antagonist.
3.
a. Aspirin: cause a physiological response, and inhibit growth of substances that causes infection
b. Morphine: cause a physiological response
c. Keflex: inhibit growth of substances that causes infection
d. Estrogen: cause a physiological response
e. Amphetamine: cause a physiological response
f. Penicillin: inhibit growth of substances that causes infection
4.
a. Provide the source of dietary ingredient supplies, providing more specific details eg acupuncture, sending their products on strict trials
b. Singapore only allows products that don’t contain prohibited ingredients, and do not make claims to treat illnesses or diseases, products claims that are accurate and truthful, product labels and packaging contain sufficient information for consumers to review when purchasing and consuming the products, and information that is printed in a clear and legible manner.