Which Equation Better Describes the Steady-State Concentration of a Protein

question 30

Multiple Choice

Which equation better describes the steady-state concentration of a protein (X) that is regulated by the simple binding of a transcription repressor (R) to its cis?-regulatory DNA sequences? β is the transcription rate, m is the translation rate, K is the association constant in the binding of R to the regulatory sequences, and τX is the mean lifetime of the protein X.

• A) βmτX / (1 + K[R])
• B) βmτX / (1 + [R])
• C) βmτX K / (1 + K[R])
• D) βmτX [R] / (1 + K[R])
• E) βmτX [R] / (K + [R])

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Definitions:

Diversification

A risk management strategy that involves spreading investments across various financial assets, industries, or other categories to minimize exposure to any single risk or volatility.

Firm-specific Risk

Risk factors affecting only a specific company or industry, as opposed to broader market or economic risks.

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of values from their average.

Volatility

Measures the degree of variation of a trading price series over time, typically used in financial contexts to indicate the risk of an investment.