You Find an Animal with No Backbone,a Body in Three

question 66

Multiple Choice

You find an animal with no backbone,a body in three segments,jointed appendages,and a hard exoskeleton.You determine that this animal is a(n)

• A) chordate.
• B) nematode.
• C) mollusk.
• D) arthropod.
• E) echinoderm.

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Definitions:

NADH

Nicotinamide adenine dinucleotide (NADH) serves as a crucial coenzyme in the cellular energy production process, participating in redox reactions by carrying electrons from one reaction to another.

Electron Transport Chain

A series of protein complexes located in the inner membrane of mitochondria that facilitate the movement of electrons to generate ATP.

Electrons

Subatomic particles with a negative charge, found orbiting the nucleus of an atom, and crucial to chemical bonding and electricity.

Electrochemical Gradient

The combined difference in concentration and charge of ions across a membrane, driving the movement of ions through channels, critical for processes like muscle contraction and nerve transmission.