Amino acid

The video explains that only 20 amino acids are used to build all proteins in the human body. Each amino acid consists of an amine group, a carboxylic acid group, and a side chain attached to a central carbon atom. Essential amino acids are those that the body cannot synthesize and must be obtained through diet.

How many amino acids are utilized by the human body to create proteins?

• 10

• 20

• 30

• 40

Which of the following is NOT a component of an amino acid's structure?

• Phosphate group

• Side chain group

• Carboxylic acid group

• Amine group

What is the central atom to which the groups in an amino acid are attached?

• Nitrogen

• Oxygen

• Hydrogen

• Carbon

What term is used for amino acids that must be obtained through diet?

• Non-polar amino acids

• Essential amino acids

• Conditional amino acids

• Non-essential amino acids

Why are essential amino acids important in a diet?

• They can be synthesized by the body.

• They are only required in small amounts.

• They are not needed for protein synthesis.

• They must be obtained from food as the body cannot produce them.