1. Module 7 Intro

1.3. Lesson 1 Intro

Lesson 1

Module 7—The Digestive and Respiratory Systems

Lesson 1—Molecules of Living Systems

 

Get Focused

 

Two high school wrestlers are locked in a pose.

© Larry St. Pierre/Shutterstock

How are these two high-school wrestlers the same as retired World Wrestling Federation (WWF) superstar Bret “the Hitman” Hart? Hart is a member of the internationally famous Hart wrestling family from Calgary. He is recognized as one of the most intense competitors ever to leap into the professional wrestling ring. Whether performing a signature “Jumping Piledriver” or his classic finishing “Sharpshooter,” the muscles in his sculpted body bulged with every move.

 

Like most wrestlers, bodybuilders, and weightlifters, Hart pushed his body to its limits. His need for speed and strength required that he carefully monitor what he consumed. In a way, his diet was like balancing a bank account. What he consumed needed to match what his body was “spending” in the process of growth and repair. His diet had to contain the right balance of carbohydrates, fats and proteins, vitamins, and minerals. Each item of food was important in ensuring that the dietary needs imposed on his body, by his extreme sport, were met.

 

In this lesson you will learn about the important organic molecules that play a wide variety of roles in your body’s daily activities. In addition, you will learn about important proteins—called enzymes—that control the different chemical reactions taking place within your cells.

 

In this lesson the following questions will be examined:

  • What are the chemical characteristics of carbohydrates, lipids, and proteins and their corresponding enzymes?

  • How are digestive enzyme functions controlled by the internal environment?
Module 7: Lesson 1 Assignment
 

Your teacher-marked Module 7: Lesson 1 Assignment requires you to submit a response to the following:

  • Lab: Enzyme-Controlled Reactions
  • TR 1. Hydogen Peroxide and Catalase

You can access your Module 7: Lesson 1 Assignment. You can print off the assignment or save the download to your computer. Your answers can be saved on this document to your course folder.