8th Grade Bio Hormones Quizzes, Questions & Answers

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Endocrine System - 1

Endocrine System - 1

Endocrine system is a series of organs and glands in your body that secret chemical messengers called hormones in to your blood stream.

Questions: 20 | Attempts: 3911 | Last updated: Mar 21, 2025

Sample Question 1
The chemical messengers released by endocrine glands are called____

Hormones

Exocrine glands

Enzymes

Neurons

Sample Question 2
Which of the following hormones control cellular metabolism?

Thyroxin

Calcitonin

Insulin

Epinephrine

Sample Question 3
Which hormone is believed to regulate sleep?

Melatonin

Thyroid

Norepinephrine

Calcitonin