Human Biology

http://www.ck12.org Chapter 1. Human Biology

• protein: Organic compound composed of amino acids and includes enzymes, antibodies, and muscle fibers.


• vitamin: Organic compound needed in small amounts for the body to function properly.

Summary

• Your body needs food to obtain energy, to get building blocks for your body, and to get substances that help
  control body processes.


• Nutrients, chemicals in food that your body needs, include carbohydrates, proteins, lipids, vitamins, and
  minerals.

Practice

Use the resource below to answer the questions that follow.

• Nutritionat http://www.youtube.com/watch?v=2xbD6–X0IA (6:39)

MEDIA

Click image to the left for more content.

1. What do organisms use "food" for?


2. What is a heterotroph? Are humans autotrophic or heterotrophic?


3. What are the three types of heterotrophic organisms?

Review

1. Why does your body need food?


2. What are nutrients?