PROTEINS

Building blocks of protein.

• Amino acids

• Enzymes

• Micronutrients

• Ketones

Are compounds of a protein and triglycerides or other lipids.

• Metalloproteins

• Lipoproteins

• Mucoproteins

• Chromoproteins

What is a peptide bond?

• Bond that holds two amino acids together.
• A bond that holds hydrogen and oxygen molecules together.
• A bond that holds the phosphate group of one nucleotide and a sugar of a neighboring nucleotide.
• A bond that is formed by the sharing of electrons.

Which colored box highlights the amino group?

• Blue (left)

• Turquoise (top)

• Orange

• Red

• Purple

Which colored box is different for every amino acid?

• Blue (left)

• Turquoise (top)

• Orange

• Red

• Purple

What is a long chain of amino acids called?

• Polysaccharide

• Lipid

• Carbohydrate

• Polypeptide

• Nucleic acid

Amino acids are classified based on their _______.

• amino group

• carboxyl group

• central carbon

• variable side chain

Sulphur containing amino acid is

• Methionine

• Leucine

• Valine

• Asparagine

Proteins in living organisms contain

• Only L- α- amino acids

• Only D-amino acids

• DL-Amino acids

• None of these

Which of the following has a nonpolar, aliphatic R group?

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