Which of the Following Would Be Regarded as Compounds

question 21

Multiple Choice

Which of the following would be regarded as compounds?

• A) H₂O, O₂, and CH₄
• B) H₂O and O₂
• C) O₂ and CH₄
• D) CH₄ and O₂, but not H₂O
• E) H₂O and CH₄, but not O₂

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Definitions:

Sodium

A soft, silvery-white, highly reactive metallic element, essential for numerous biological processes in animals and humans, particularly in nerve and muscle function.

Potassium

A chemical element with the symbol K, essential for many processes in organisms, especially in nerve function.

Presynaptic Neuron

The neuron that sends a signal across a synapse to another neuron, typically by releasing neurotransmitters.

Postsynaptic Neuron

A neuron that receives a signal from and is located directly downstream of the synapse in neuronal communication.