Back to Library

Chemistry of the Human Body and Health

Introduction To Chemistry

Exploring fundamental chemical concepts as they relate to human biology and health.

chemistry human body health biochemistry elements

8 Questions Medium Ages 12+ Apr 8, 2026

Practice Test PDF Answer Key PDF

Choose a Study Format

Quiz

Test your knowledge with multiple-choice questions and instant feedback.

Flashcards

Flip through cards to review terms, definitions and key concepts.

True or False

Quickly decide if statements are true or false to reinforce understanding.

Match Game

Race against time to match questions with their correct answers.

Study Guide

Read through all topics and answers as a comprehensive study reference.

Listen Mode

Listen to questions and answers read aloud — great for audio learners on the go.

Embed This Study Set

Add this interactive study set to your website or blog — all 6 formats included.

<div data-quixly-id="1423"></div>
<script src="https://www.quixlylearn.com/assets/embed/widget.js"></script>

Learn more about embedding →

About this Study Set

This study set covers Introduction To Chemistry through 8 practice questions. Exploring fundamental chemical concepts as they relate to human biology and health. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 8 questions from the Chemistry of the Human Body and Health study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the primary role of iron (Fe) in the human body, particularly concerning oxygen transport?

A It acts as a catalyst for nerve impulse transmission.
B It is a key component of hemoglobin, responsible for carrying oxygen in the blood.
C It plays a crucial role in maintaining bone density.
D It is essential for the synthesis of vitamin D.

2 Which essential mineral is a major component of bones and teeth, and also plays a role in muscle function and nerve signaling?

A Sodium (Na)
B Potassium (K)
C Calcium (Ca)
D Magnesium (Mg)

3 What is the chemical element that forms the backbone of all organic molecules, including carbohydrates, lipids, proteins, and nucleic acids, which are fundamental to life?

A Oxygen (O)
B Nitrogen (N)
C Carbon (C)
D Hydrogen (H)

4 The element Iodine (I) is crucial for the proper functioning of which gland in the human body?

A Adrenal glands
B Pancreas
C Thyroid gland
D Pituitary gland

5 Which of the following is the most abundant element in the human body by mass, essential for respiration and as a component of water?

A Carbon (C)
B Nitrogen (N)
C Hydrogen (H)
D Oxygen (O)

6 What is the primary function of electrolytes like Sodium (Na+), Potassium (K+), and Chloride (Cl-) in the human body?

A To store energy for muscle contraction.
B To facilitate nerve impulse transmission and maintain fluid balance.
C To build and repair cellular structures.
D To act as antioxidants, protecting cells from damage.

7 Phosphorus (P) is a vital component of which key biomolecule that stores and transfers energy within cells?

A DNA
B Hemoglobin
C ATP (Adenosine Triphosphate)
D Collagen

8 Which of these elements is a major component of proteins and nucleic acids, and is also involved in energy metabolism?

A Sulfur (S)
B Nitrogen (N)
C Phosphorus (P)
D Potassium (K)

📱

Study on the go

Download Quixly and access all study formats on your phone — anywhere, anytime.