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Macromolecules and Food Testing Quiz

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Questions and Answers

What is the function of villi in the ileum?

To maximize absorption of digested soluble molecules into the blood (correct)

To break down lipids into glycerol and fatty acids

To increase the alkalinity of the small intestine

To emulsify large drops of fat

Which enzyme breaks down starch into maltose?

Lipase

Protease

Maltase

Amylase (correct)

What is the role of lipases in the digestive system?

Breaking down proteins into amino acids

Emulsifying large drops of fat

Breaking down lipids into glycerol and fatty acids (correct)

Increasing the alkalinity of the stomach

How can the energy content in a food sample be measured?

By using calorimetry Signup and view all the answers

Where does water absorption primarily occur in the digestive system?

In the large intestine Signup and view all the answers

What is the function of proteases in the digestive system?

Breaking down proteins into amino acids Signup and view all the answers

What elements make up proteins?

Carbon, oxygen, hydrogen, sulfur, nitrogen, phosphorous Signup and view all the answers

Which monomers do proteins break down into?

Amino acids Signup and view all the answers

What are lipids (fats and oils) made of?

Carbon, oxygen, hydrogen Signup and view all the answers

What are the components of a lipid molecule that is broken down during digestion?

3 fatty acids and 1 glycerol molecule Signup and view all the answers

How is the presence of glucose tested for in a food sample?

By adding Benedict's solution and heating at 60-70°C Signup and view all the answers

What do enzymes act as in biological systems?

Substances that increase the rate of reactions without being used up Signup and view all the answers

What is the function of amylase in the digestive system?

Break down starch into glucose Signup and view all the answers

Where is bile produced in the human body?

Liver Signup and view all the answers

Which enzyme is responsible for breaking down proteins in the stomach?

Pepsin Signup and view all the answers

What is the role of hydrochloric acid in the stomach?

Make the stomach acidic for enzyme activity and bacteria killing Signup and view all the answers

Which organ produces carbohydrase, protease, and lipase enzymes?

Pancreas Signup and view all the answers

What is the first part of the small intestine called?

Duodenum Signup and view all the answers