The Mechanism for All Template-Directed Synthesis of Any Type of Nucleic

question 48

Multiple Choice

The mechanism for all template-directed synthesis of any type of nucleic acid involves the following:

• A) Nucleophilic attack of a 3' hydroxyl toward a nucleoside triphosphate, releasing PP_i.
• B) Nucleophilic attack of a 5' hydroxyl toward a nucleoside triphosphate, releasing PP_i.
• C) Nucleophilic attack of a 3' hydroxyl toward a nucleoside triphosphate, releasing P_i.
• D) Nucleophilic attack of a 5' hydroxyl toward a nucleoside triphosphate, releasing P_i.
• E) More than one of these would work, since the mechanism is not universal.

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Definitions:

Capsaicin

A chemical compound found in chili peppers responsible for their hot and spicy flavor, which is also used in topical medications for its pain relief properties.

Substance P

A neuropeptide involved in the transmission of pain and other sensory signals in the central and peripheral nervous system.

Serotonin

A neurotransmitter that plays a crucial role in mood regulation, digestion, sleep, and various other bodily functions.

Dopamine

A neurotransmitter involved in reward, motivation, and various other neurological and physiological functions.