18 Questions
What is the main function of keratin in hair?
To provide structural support
Which of the following enzymes is responsible for breaking down starches?
Amylase
What is the main function of hemoglobin in the body?
To transport oxygen from the lungs to cells
What is the maximum recommended percentage of dietary intake that should come from lipids?
30%
Which of the following is a key function of lipids in the body?
To provide energy
What is the name of the lipid that forms the cell membrane?
Phospholipid
What is the main function of carbohydrates in the body?
To provide immediate energy for muscles, brain, and cells
Which of the following is a disaccharide?
Sucrose
Why is glucose considered the most important sugar for the body?
Both A and B
Which of the following is a lipid?
Triglyceride
What is the primary function of proteins in the body?
To build and repair body tissues
Which of the following is a macromolecule?
Carbohydrate
Which of the following statements about proteins is true?
Proteins are composed of carbon, hydrogen, oxygen, and nitrogen.
What is the primary role of fibrous proteins?
Providing structure and support
Which of the following is an example of a globular protein?
Enzyme
What percentage of the diet should proteins ideally make up?
15%
Which of the following is a characteristic of a complete protein source?
It contains all essential amino acids.
How many essential amino acids must be obtained from dietary sources?
9
Test your knowledge on the functions of cells in living organisms, such as structural support, enzyme activity, substance transport, hormone regulation, and immune defense.
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