About This Chapter
Biology: Intro to Nutrition - Chapter Summary
Rediscover how the body obtains and absorbs nutrients through these short video lessons. Examine how to apply the scientific method to the study of nutrition, how to identify sources that provide accurate information, how to tell the true from the false, and more.
You will review the composition of organic vs. inorganic nutrients, how nutritional intake is determined and measured and the tools used for this purpose. The lessons contain the material shown below:
- Definition and explanation of nutrition and energy-yielding nutrients
- Comparison of organic and inorganic nutrients
- Application of the scientific method and experimental design
- RDA, AI and other dietary reference intakes
- Health maintenance through diet and nutrition
- Reliable sources for information on nutrition, myths and facts
Well-written, comprehensive and informative despite their short duration, these lessons provide a strong refresher course designed to help you learn quickly and easily. None of the lessons last for more than ten minutes, and the video timeline allows you quick access to any part of a lesson you want to review without the need to go back to the beginning. Each lesson quiz helps you evaluate how well you have retained the material, and you can refer from the quiz to the video using the embedded links.
1. What is Nutrition?
Nutrition is the process of taking in nutrients from the foods you eat. Learn about the six nutrients needed for energy, maintenance of tissues and regulation of bodily processes: carbohydrates, fats, proteins, water, vitamins and minerals.
2. Energy-Yielding Nutrients: Carbohydrates, Fat & Protein
Carbohydrates, fats and proteins are referred to as the three energy-yielding nutrients because they provide your body with energy that is measured in calories. You'll also learn about another substance that can provide your body with calories, even though it is not a nutrient.
3. Organic vs Inorganic Nutrients: Differences & Importance
The presence or absence of carbon is what differentiates organic nutrients from inorganic nutrients. Carbohydrates, lipids, proteins and vitamins have carbon in their structure, making them organic. Water and minerals do not, so they are inorganic.
4. Using the Scientific Method in the Nutrition Field
The scientific method is a systematic process that scientists follow to provide reliable nutritional advice to the public. Learn how a hypothesis is formulated and how this leads to the creation of a theory, as well as what makes a study reliable, in this lesson.
5. Experimental Design in Science: Definition & Method
What are the requirements of a scientific experiment? How do scientists turn hypotheses into theories and laws? Learn the answers to these questions and more in this lesson on the design of scientific experiments.
6. Dietary Reference Intakes: EAR, RDA, AI & UL
Dietary Reference Intakes (DRIs) are a set of values used to plan a healthy diet. Learn about the DRI values: Estimated Average Requirements (EARs), Recommended Dietary Allowances (RDAs), Adequate Intakes (AIs) and Tolerable Upper Intake Levels (ULs).
7. Assessing Your Nutrition, Diet & Health: How to Avoid Disease
A nutritional assessment is used to determine the nutritional status of a person or group of people. Learn about the ABCDs of nutritional assessment: anthropometric assessment, biochemical assessment, clinical assessment and dietary assessment.
8. How to Find Sources of Reliable Nutrition Information
There is a lot of nutritional information available through the Internet and other media outlets, so how do you find reliable sources of nutritional information? Follow along to find out and learn how to protect yourself from false claims.
9. Nutritional Myths, Facts, Risks & Benefits
Have you heard about the latest supplement craze that will cure you of something? Is it worth taking? This lesson will talk about the benefits, risks, myths, and facts surrounding dietary supplements.
Earning College Credit
Did you know… We have over 160 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the PCAT: Study Guide & Test Prep course
- Verbal Ability: Analogies
- Verbal Ability: Sentence Completion
- Biology: Cell Structure & Division
- Biology: Cellular Processes
- Biology: DNA & Enzymes
- Biology: Genetics
- Animal & Human Behavior
- Biology: Evolution & Natural Selection
- Speciation, Extinction & Taxonomy
- Biology: Nutrition - Carbohydrates
- Biology: Nutrition - Lipids
- Protein in Nutrition
- Minerals & Nutrition
- Vitamins in Nutrition
- Biology: Diseases & Prevention
- Biology: Types of Diseases
- Microrganisms & Microbial Ecology
- Medical Microbiology
- Microbiology: The Immune System
- Structures of Human Anatomy & Physiology
- Human Skeletal System
- Muscular System
- The Human Nervous System
- Human Circulatory System Basics
- The Circulatory System, Blood & Blood Vessels
- Respiratory System
- Urinary Systems & Structures
- Functions of the Human Digestive System
- Overview of the Endocrine System
- Male Reproductive System
- Female Reproductive System
- Integumentary System Overview
- The Five Senses of the Human Body
- The Atom and Atomic Theory
- Chemical Bonding in Physical Chemistry
- Types of Reactions in Chemistry
- Equilibrium in Chemistry
- Overview of Stoichiometry
- Properties of Liquids & Solids
- Gas Laws
- Kinetics & Thermodynamics
- Elements, Compounds & Mixtures
- Nuclear Processes
- Organic & Inorganic Chemistry
- Reading Comprehension & Analysis
- Fractions & Percents
- Solving Algebraic Equations
- Linear Equations Overview
- Inequalities Overview
- Understanding the Basics of Functions
- Interpreting Tables & Plots
- Basic Statistics & Probability
- Linear Regression & Correlation
- Solving Exponential & Logarithmic Functions
- Complex Numbers & Vectors
- Limits of Functions
- Overview of Continuity
- Rate of Change & Calculating Derivatives
- Integrals & Antiderivatives
- PCAT Flashcards