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Ch. 3 - Is It Possible to Supplement Your Way to Better Performance and Health?
Belk, Maier - Biology: Science for Life 6th Edition
Belk, Maier6th EditionBiology: Science for LifeISBN: 9780135214084Not the one you use?Change textbook
All textbooksBelk, Maier 6th EditionCh. 3 - Is It Possible to Supplement Your Way to Better Performance and Health?Problem 1
Chapter 3, Problem 1

What are the two main functions of nutrients?

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1
Identify the broad categories of nutrients which include macronutrients (carbohydrates, proteins, and fats) and micronutrients (vitamins and minerals).
Understand that the first main function of nutrients is to provide energy. Macronutrients like carbohydrates, proteins, and fats are broken down by the body to release energy, which is measured in calories.
Recognize that the second main function of nutrients is to serve as building blocks for growth and maintenance. Proteins, for example, are used to build and repair tissues, while fats are essential for constructing cell membranes.
Acknowledge that nutrients also play a crucial role in regulating body processes. Vitamins and minerals, for instance, are involved in processes like blood clotting, bone formation, and immune system function.
Consider how the balance and variety of nutrients consumed impact overall health, supporting everything from brain function to muscle function.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Energy Provision

One of the primary functions of nutrients is to provide energy for the body's metabolic processes. Carbohydrates and fats are the main sources of energy, which are broken down during cellular respiration to produce ATP, the energy currency of cells. This energy is essential for all bodily functions, including movement, growth, and maintaining homeostasis.
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Building and Repairing Tissues

Nutrients also play a crucial role in building and repairing tissues. Proteins, composed of amino acids, are vital for the growth and repair of muscles, organs, and other tissues. Additionally, vitamins and minerals support various biochemical processes that facilitate tissue maintenance and regeneration, ensuring the body remains healthy and functional.
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Regulation of Body Processes

Nutrients are essential for regulating various physiological processes in the body. For instance, vitamins and minerals act as co-factors in enzymatic reactions, influencing metabolism, immune function, and hormone production. This regulatory role ensures that the body can respond appropriately to internal and external changes, maintaining overall health and balance.
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Related Practice
Textbook Question

Add labels to the figure that follows, which illustrates some molecules that can and cannot pass through cell membranes unaided.

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Textbook Question

Macronutrients ________.

a. Include carbohydrates and vitamins.

b. Should make up a small percentage of a healthful diet.

c. Are essential in minute amounts to help enzymes function.

d. Include carbohydrates, fats, and proteins.

e. Are synthesized by cells and not necessary to obtain from the diet.

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Textbook Question

Which of the following is not a function of water?

a. Dispersing nutrients throughout the body.

b. Helping prevent cancer.

c. Helping to regulate body temperature.

d. Helping to regulate blood pressure.

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