When a Small Amount of CH₃(CH₂)₄CO₂H, (PKa~ 4 $\text { ether; } \mathrm { CH } _ { 3 } \left( \mathrm { CH } _ { 2 } \right) 4 \mathrm { CO } _ { 2 } ^ { - }$

question 25

Multiple Choice

When a small amount of CH₃(CH₂) ₄CO₂H, (pKa~ 4.8) is added to a separatory funnel that contains ether and water with a pH=2.0 is found mainly in the ________ layer as ________.

• A) \(\text { ether; } \mathrm { CH } _ { 3 } \left( \mathrm { CH } _ { 2 } \right) 4 \mathrm { CO } _ { 2 } ^ { - }\)
• B) \(\text { water; } \mathrm { CH } _ { 3 } \left( \mathrm { CH } _ { 2 } \right) 4 \mathrm { CO } _ { 2 } ^ { - }\)
• C) \(\text { ether; } \mathrm { CH } _ { 3 } \left( \mathrm { CH } _ { 2 } \right) _ { 4 } \mathrm { CO } _ { 2 } \mathrm { H }\)
• D) \(\text { water; } \mathrm { CH } _ { 3 } \left( \mathrm { CH } _ { 2 } \right) _ { 4 } \mathrm { CO } _ { 2 } \mathrm { H }\)
• E) none of the above

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Definitions:

DNA Polymerase

An enzyme responsible for synthesizing DNA molecules from deoxyribonucleotides, the building blocks of DNA.

RNA Primase

An enzyme that synthesizes short RNA sequences called primers that serve as starting points for DNA synthesis.

Reverse Transcriptase

An enzyme produced by retroviruses that catalyzes the production of DNA using RNA as a template.

Promoter Region

A region of DNA that initiates transcription of a particular gene, essential for gene expression regulation.