A 5-Kg Shark Swimming at a Speed of 1 M/s

question 28

Multiple Choice

A 5-kg shark swimming at a speed of 1 m/s swallows an absent-minded 1-kg fish swimming toward it at 4 m/s.The speed of the shark after this meal is

• A)1/2 m/s.
• B)1/5 m/s.
• C)1/6 m/s.
• D)2/3 m/s.
• E)3/2 m/s.

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Definitions:

Ion Channel-linked Receptor

A type of receptor protein that allows ions to pass through a channel in the cell membrane when the receptor is activated.

Signal Transduction

A series of molecular events and chemical reactions that convey a signal from a cell's exterior to its interior, resulting in a cellular response.

Phospholipids

A class of lipids that are a major component of all cell membranes as they can form lipid bilayers.

cAMP

Cyclic adenosine monophosphate, a second messenger important in many biological processes that transmits cellular signals by activating protein kinases.