If the Attribute (B) Is Functionally Dependent on a Composite

question 18

True/False

If the attribute (B) is functionally dependent on a composite key (A) but not on any subset of that composite key, the attribute (B) is fully functionally dependent on (A).

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Definitions:

Chemical Signals

Molecules released by cells that are used to communicate with other cells, affecting their behavior or physiology.

Pheromones

Chemical signals released by an organism to affect the behavior or physiology of other members of the same species.

First Messenger

A signaling molecule that binds to a receptor on the surface of a cell and triggers a biochemical cascade that conveys signals inside the cell.

Second Messenger

Intracellular signaling molecules released by the cell in response to exposure to extracellular signaling molecules.