Food and Biological Molecules

Why do we eat food? 

It isn't because it tastes good. It's the other way around. Food tastes good because we are adapted to eat what we need to survive. We need food for two equally important reasons:  

Biological Molecules

What are the molecules that we need for these two purposes? There are 4 main categories that will sound very familiar to you because we often talk about nutrition and food in terms of these molecules

Biological Molecules and Living Organisms

All living organisms are made out of cells and their cells are built out of the molecules above. So if you eat something that used to be alive ( steak , apple, carrot, etc) then it will be made out of those 4 types of biological molecules. Obviously an apple has less protein than a steak, but it still has some proteins.  A steak  has less carbohydrate than a carrot, but it still has some.

 This video will teach you about

• the 4 main categories of biological molecules
• the monomers for each category
• the function of each type of molecule. 

You will need to answer the questions embedded in the video. You will have two chances to answer each question.