Jamming a Lock Such That the Key Will No Longer

question 174

Multiple Choice

Jamming a lock such that the key will no longer open it is essentially what a drug _____ does at the receptor.

• A)blocker
• B)deactivator
• C)agonist
• D)antagonist

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Definitions:

Gaseous Phase

A state of matter characterized by neither a defined shape nor volume, with molecules moving freely, much faster than in liquid or solid states.

Phosphorus Cycle

The worldwide circulation of phosphorus from the abiotic environment into living things and back into the abiotic environment.

Nitrogen-Fixing Bacteria

Bacteria capable of converting atmospheric nitrogen into organic compounds usable by plants.

Gaseous Nitrogen

Nitrogen in its gaseous state, making up about 78% of the Earth's atmosphere, and is chemically inert under most conditions.