Proteins and Protein Metabolism (PRE -TEST)

What is the definition of proteins?

• Anhydride of amino acids

• Fundamental constituents of the protoplasm

• Substances which were once living

• All of the above

Which elements are usually found in proteins?

• Carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus

• Carbon, hydrogen, oxygen, nitrogen, and sulfur

• Carbon, hydrogen, oxygen, nitrogen, and phosphorus

• Carbon, hydrogen, oxygen, and nitrogen

How are amino acids linked to form proteins?

• Through peptide bonds by dehydration reaction

• Through hydrogen bonds by hydration reaction

• Through covalent bonds by hydrolysis reaction

• Through ionic bonds by condensation reaction

What is the primary derived protein?

• Metaproteins

• Proteoses

• Peptones

• Peptides

Which type of protein contains all the essential amino acids in sufficient amount?

• Complete or Adequate Protein

• Partially Incomplete Protein

• Incomplete Protein

• None of the above

What is the function of proteins?

• Building of tissues

• Daily repair of tissues

• Source of energy

• All of the above

What factors influence the biological value of protein?

• Amount and relative proportions of constituent amino acids

• Nutritional availability of constituent amino acids

• Method of food processing or preparation

• All of the above

What are the physical properties of proteins?

• Form colloidal solution

• Form typical milky colloidal solution which foams when agitated

• Non-dialyzable

• All of the above

What is the primary structure of a protein?

• Amino acid sequence

• Localized arrangement of one amino acid

• Three-dimensional appearance of protein molecule

• Over-all arrangement of the tertiary structure of protein molecule

What is the fate of absorbed amino acids?

• Synthesized into body protein for growth and repair

• Temporarily stored in the tissues

• Taken up rapidly by the liver and tissues

• All of the above