Amino Acids

Which of the following is NOT one of the four main classes of biomolecules mentioned in the video?

• Proteins

• Carbohydrates

• Vitamins

• Nucleic acids

What is the name of the carbon atom located between the amino group and the carboxyl group in an amino acid?

• Beta carbon

• Alpha carbon

• Gamma carbon

• Delta carbon

What is the significance of the 'R group' in an amino acid?

• It determines whether the amino acid is essential or nonessential.

• It is responsible for the amino acid's unique structure and reactivity.

• It forms the peptide bond between amino acids.

• It dictates the overall charge of the amino acid at any pH.

What distinguishes an 'essential amino acid' from a 'nonessential amino acid'?

• Essential amino acids are larger molecules than nonessential amino acids.

• Essential amino acids are only found in animal products, while nonessential are in plants.

• Essential amino acids cannot be synthesized by the human body and must be obtained from the diet.

• Nonessential amino acids are not required for protein synthesis, unlike essential amino acids.

What is a zwitterion, as described in the context of amino acids?

• A molecule with only a positive formal charge.

• A molecule with only a negative formal charge.

• A molecule with both a positive and a negative formal charge.

• A molecule that is completely neutral and has no formal charges.