Which of the Following Elements Is the Simplest Atom, with an Atomic

question 12

Multiple Choice

Which of the following elements is the simplest atom, with an atomic number of 1?

• A) Hydrogen
• B) Helium
• C) Nitrogen
• D) Oxygen

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Definitions:

Neurons

Specialized cells within the nervous system that transmit information to other nerve cells, muscle, or gland cells.

Neurotransmitters

Chemical messengers that transmit signals across a chemical synapse, from one neuron to another target neuron, muscle cell, or gland cell.

Myelin Sheaths

Fatty coverings on the axons of some neurons that help speed neural impulses.

Degeneration

The process by which tissue deteriorates over time, losing structure and function, often associated with diseases and aging.