Ch 12: Biology: Nutrition - Lipids

About This Chapter

Learn more about the significance of lipids, their role in our health, and how they fit in as part of our daily nutritional intake. Examine the various types of lipids, where they come from and their chemical structure and composition.

Biology: Nutrition - Lipids - Chapter Summary

Lipids are fats, pure and simple. However, as you will see in this chapter, all fats are not created equal. There are healthy fats and unhealthy fats. You will take a closer look at what makes a fat saturated or unsaturated, which are beneficial and which are not, and how much fat your daily intake should include.

You will also discover which foods are sources of both healthy and unhealthy lipids, and examine the various types of lipoproteins and their role in the body. The chapter covers the material shown in the following list:

  • Lipid composition and purpose
  • Types of lipids and role in nutrition
  • Dietary significance of saturated, mono- and poly-saturated fats
  • Functions and categories of lipoproteins
  • Lipids in food and RDA value

This comprehensive, yet flexible and user-friendly study guide gives you all the tools you need to make the most of your study sessions. The video lessons, while providing in-depth information, are still quite short, and the timeline feature allows you to proceed directly to any segment you want to view. There is never a need to repeat the entire lesson unless you choose to do so. Self-assessment comes in the form of lesson quizzes, and the chapter test gives you an accurate way to measure your overall progress.

6 Lessons in Chapter 12: Biology: Nutrition - Lipids
Test your knowledge with a 30-question chapter practice test
Structure and Function of Lipids

1. Structure and Function of Lipids

Molecules called lipids have long hydrocarbon chains that determine the way they act. They can be fats, oils, or hormones, and even exist in our cell membranes. Learn more about the chemical structure and biological function of various lipids in this lesson.

Lipids: Types & Nutritional Role

2. Lipids: Types & Nutritional Role

There are different types of lipids, and each one plays a role in your health. Learn how triglycerides, phospholipids and steroids differ in their chemical structure and the jobs they do within your body.

Saturated, Monounsaturated & Polyunsaturated Fat: Dietary Needs

3. Saturated, Monounsaturated & Polyunsaturated Fat: Dietary Needs

Fat has been derided as being really bad for you despite serving many important functions. You'll learn about these functions and the different kinds of fat you may encounter as well as why a lot of fat can truly, in the end, be bad for you.

Lipoproteins: Classes & Functions

4. Lipoproteins: Classes & Functions

Lipoproteins transport fats through your blood. Learn about the different classes of lipoproteins: chylomicrons, very low density lipoproteins (VLDLs), low density lipoproteins (LDLs) and high density lipoproteins (HDLs) and their jobs in this lesson.

Foods That Are Sources of Lipids

5. Foods That Are Sources of Lipids

Fats add flavor to the foods you love. Yet, eating too many unhealthy fats, such as saturated fats, trans fats and cholesterol, can lead to health problems. Learn which foods contain these unhealthy fats and which ones contain fats that promote health in this lesson.

Recommended Dietary Intakes of Lipids

6. Recommended Dietary Intakes of Lipids

Fats add a lot to the enjoyment of your daily diet, but too much of the wrong fats can lead to health problems. In this lesson, learn about the different types of fats that you consume throughout your day and the recommended amounts you should eat.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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

Other chapters within the PCAT: Study Guide & Test Prep course

Support