Protein and Amino Acids

What are proteins made of?

• Atoms of carbon, hydrogen, oxygen, and nitrogen

• Atoms of carbon, hydrogen, and oxygen only

• Atoms of nitrogen and oxygen only

• Atoms of carbon and hydrogen only

One of the functions of protein related to body tissues is (a)  

• energy storage
• hormone regulation
• tissue repair
• oxygen transport

Proteins contribute to the body's chemical processes by (a)  

• providing energy for cellular activities
• storing genetic information
• transporting oxygen in the blood
• acting as enzymes to speed up chemical reactions

Proteins play a crucial role in the immune system by:

• acting as enzymes to speed up chemical reactions

• serving as antibodies to identify and neutralize pathogens

• providing structural support to cells

• storing genetic information

Proteins help maintain fluid and electrolyte balance by (a)  

• acting as enzymes
• serving as antibodies
• regulating osmotic pressure
• providing energy

Each gram of protein provides _____ calories of energy.

It is recommended that protein provide (a)   of total caloric intake.

• 5-15%
• 10-35%
• 20-40%
• 25-50%

The recommended intake for a healthy adult is (a)   x kg desired body weight.

• 0.8g
• 1.0g
• 1.2g
• 1.5g

What are complete proteins?

• Proteins lacking one or more essential amino acids

• Proteins containing all the essential amino acids

• Proteins found only in plants

• Proteins found only in animals

Which of the following are sources of complete proteins?

• Meat, fish, soybeans

• Vegetables, nuts, seeds

• Fruits, grains

• All of the above