Which Statement About Isotopes Is True

question 41

Multiple Choice

Which statement about isotopes is true?

• A) Each isotope of an element has chemical properties that differ from those of other isotopes of the same element.
• B) Isotopes of an element have different numbers of protons.
• C) Some isotopes are unstable and decay.
• D) All isotopes emit radiation.

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Definitions:

Hormones

Chemical messengers produced by glands in the body, which regulate physiological activities and maintain homeostasis.

Neurotransmitters

Chemicals that transmit signals across a synapse from one neuron to another neuron, muscle cell, or gland cell.

Body Processes

Various physiological and biological functions carried out by an organism to maintain life, including respiration, digestion, and circulation.

Exocrine Glands

Glands that secrete their products through ducts either onto an external surface or into an internal space, unlike endocrine glands which secrete hormones directly into the bloodstream.