Which of the Following Statements About the Molecular Events of Photoreception

question 65

Multiple Choice

Which of the following statements about the molecular events of photoreception is false?

• A) In a well-lit setting, most of the cGMP-gated channels of a rod cell are open.
• B) A single photon can excite a rhodopsin molecule.
• C) Sodium channels remain open in the dark.
• D) Activated phosphodiesterase (PDE) catalyzes the reaction hydrolyzing cGMP into GMP.
• E) Activated transducin activates PDE.

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Definitions:

Residual Value

The estimated salvage value of an asset at the end of its useful life, used in calculating depreciation expense.

Book Value

The net value of an asset or a company, calculated by subtracting liabilities from assets, often used to assess if a stock is under or overvalued.

Residual Value

The projected worth of an asset upon reaching the end of its serviceable duration.

Straight-Line Depreciation

A method of allocating the cost of a tangible asset over its useful life in equal annual amounts, simplifying accounting processes.