Which of the Following Ions Is the Trigger for a Muscle

question 20

Multiple Choice

Which of the following ions is the trigger for a muscle contraction?

• A) sodium
• B) chloride
• C) calcium
• D) potassium
• E) acetylcholine

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Definitions:

Insect Pests

Species of insects that cause damage to crops, stored food, and structures, or that can pose health risks to humans and animals.

Natural Ecosystems

Ecosystems that occur naturally without human influence, consisting of a complex web of organisms and their physical environment.

Potential Pest Species

Organisms that are likely to cause harm or damage to crops, livestock, or ecosystems if their populations are not managed.

Hormones

Chemical messengers produced by glands in the body that regulate the activity of cells or organs.