The Digestive System

Question 1

What food molecules are too large and insoluble to pass the through the digestive system and into the blood?

Answer 1

Starch, proteins and fats

Question 2

What are the two main functions of the digestive system?

Answer 2

~It can digest large insoluble molecules to small soluble ones by using enzymes
~It absorbs small soluble molecules into the blood

Question 3

What do enzymes do in the digestive system?

Answer 3

Enzymes speed up the process of breaking down large insoluble molecules to small, soluble molecules

Question 4

What is the digestive enzyme for each of the following foods? What do they produce? What is that food used for?
~Starch
~Proteins
~Fats

Answer 4

~Carbohydrase - Produces glucose - Used to provide energy
~Protease - Produces amino acids - Used to make proteins for growth and repair
~Fats - Produces fatty acids and glycerol - Used to provide energy

Question 5

What molecules of food are small enough and soluble to pass through the digestive system into the blood?

Answer 5

Vitamins, minerals and water