Lipid-Soluble Signaling Molecules, Such as Testosterone, Cross the Membranes of All

question 58

Multiple Choice

Lipid-soluble signaling molecules, such as testosterone, cross the membranes of all cells but affect only target cells because

• A) only target cells retain the appropriate DNA segments.
• B) intracellular receptors are present only in target cells.
• C) most cells lack the Y chromosome required.
• D) only target cells possess the cytosolic enzymes that transduce the testosterone.
• E) only in target cells is testosterone able to initiate the phosphorylation cascade leading to activated transcription factor.

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Definitions:

Payback Cutoff

The maximum allowable period for an investment to recoup its initial cost, beyond which it is not considered.

NPV

Net Present Value; a calculation used to determine the present value of a series of future cash flows, less the initial investment.

Conventional Cash Flow

A pattern of cash flow over time where an initial outlay is followed by a series of positive cash inflows.

Cash Flows

The entirety of cash and cash-equivalent assets being moved into and exiting a company.