Analogy: Licit recreational drug use is to smoking a cigarette as illicit recreational drug use is to .

The question is incomplete: Here is the complete question with options

Analogy: Licit recreational drug use is to smoking a cigarette as illicit recreational drug use is to .

A. smoking marijuana

B. drinking a caffeinated beverage

C. injecting heroin

D. both A and C

The answer is D. Both A and C

Explanation:

Licit drugs are drugs drugs for drugs that are legal i.e that is allowed by the law to be used. examples are alcohol, cigarette, caffine etc.

Illicit drugs on the other hand are those classified as illegal because of the threat they pose to one's health. example of illicit drugs are marijuana, cocaine, methamphetamine, injection of heroin etc.

 Hence, the best option in this question is option D which include option A smoking marijuana and option C injecting heroin

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

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explanation:

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