Drug Users Sometimes Experience an Elevated Reaction to Their Drug

question 109

Multiple Choice

Drug users sometimes experience an elevated reaction to their drug when they take it in a new environment because the:

• A) UR is not present to counteract the CR.
• B) CR is not present to counteract the UR.
• C) UR has become stronger through repeated exposure.
• D) UR has become weaker through repeated exposure.

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Definitions:

Vector DNA

Vector DNA refers to a molecule of DNA, such as a plasmid or virus, used to transfer genetic material into a cell in genetic engineering processes.

DNA Ligase

An enzyme that facilitates the joining of DNA strands together by catalyzing the formation of a phosphodiester bond.

DNA Polymerase

An enzyme that synthesizes DNA molecules from deoxyribonucleotides, the building blocks of DNA.

RNAi

Short for RNA interference, it is a biological process in which RNA molecules inhibit gene expression or translation, by neutralizing targeted mRNA molecules.