BIOD 171 Module 2 Exam - TOP SCORE PAPER - 100% Accurate Questions And Answers.

BIOD 171 Module 2 Exam - TOP SCORE PAPER - 100% Accurate Questions And Answers. MULTICHOICE 1. Of the following elements associated with macronutrients, which one is found exclusively in proteins? (A) carbon (B) oxygen (C) hydrogen (D) nitrogen Answer : (D) 2. How are amino acids more complex than the building units of carbohydrates and fats? (A) Amino acids are longer in length. (B) Amino acids do not contain carbon. (C) Amino acids are composed of both carbohydrates and fats. (D) Each amino acid has a unique side chain. Answer : (D) 3. Which of the following characteristics is the same for all amino acids? (A) electrical charge (B) chemical structure (C) number of carbons (D) a central carbon Answer : (D) 4. Which of the following terms that are used to classify amino acids in the diet can be applied to alanine? (A) essential (B) nonessential BIOD 171 Module 2 Exam - TOP SCORE PAPER - 100% Accurate Questions And Answers (C) indispensable (D) conditionally essential Answer : (B) 5. Which of the following groups are all contained in an amino acid? (A) an amino group, an acid group, an aldehyde group (B) an amino group, an alcohol group, a sulphur group (C) an amino group, an acid group, a side group (D) an amino group, an aldehyde group, an aromatic group Answer : (C) 6. Which of the following is the approximate number of the different amino acids used in the synthesis of body proteins? (A) 5 (B) 10 (C) 15 (D) 20 Answer : (D) 7. What is the simplest amino acid? (A) valine (B) glycine (C) alanine (D) methionine Answer : (B) 8. Which of the following is a DISPENSABLE amino acid in human nutrition? (A) proline (B) threonine (C) methionine (D) tryptophan Answer : (A) 9. Where does the body obtain indispensable amino acids? (A) diet (B) synthesis from other amino acids (C) carbohydrate fragments (D) fat fragments Answer : (A) 10. What type of reaction is required to bind two molecules of glycine together and release one molecule of water? (A) hydrolysis (B) deamination (C) denaturation (D) condensation Answer : (D) 11. Which of the following properties applies to a dispensable amino acid? (A) It is not needed by the body. (B) It can be synthesized by the body. (C) It can be used to synthesize an indispensable amino acid. (D) It cannot be synthesized by the body because of a genetic defect. Answer : (B) 12. Which of the following is the primary factor that differentiates one amino acid from another? (A) the side group (B) the central carbon atom (C) the number of oxygen atoms (D) the number of nitrogen atoms Answer : (A) 13. Which of the following elements is found in certain amino acids? (A) iron (B) sulphur (C) calcium (D) potassium Answer : (B) 14. Which amino acid is classified as conditionally essential when dietary intake of phenylalanine is insufficient or the body cannot normally metabolize phenylalanine? (A) cysteine (B) tyrosine (C) glutamine (D) isoleucine Answer : (B) 15. How is an essential amino acid distinguished from a nonessential amino acid? (A) It has a branched chain in its side group. (B) It can be made in the body only if a source of nitrogen is present. (C) It is required to make body proteins. (D) It must be supplied by the diet. Answer : (D) 16. What is the name of the bond between two amino acids? (A) peptide bond (B) amino bond (C) glycine-alanine bond (D) amino acid sequence bond Answer : (A) 17. Which of the following is a description of the tertiary structure of a protein? (A) the size of the polypeptide chain (B) the order of the amino acids in a sequence (C) the folds and twists in a polypeptide chain (D) the multiple polypeptide interactions in a protein Answer : (C) 18. Which of the following factors determines the amino acid sequence of a protein? (A) number of side chains in the protein (B) folding arrangement of the peptide chain (C) order of amino acids in the peptide chain (D) order of only the essential amino acids in the protein Answer : (C) 19. In comparison to the well-defined structure of starch, which of the following is the most important factor that allows for the synthesis of thousands of different proteins? (A) number of cell ribosomes (B) number of different combinations of amino acids (C) availability of amino acids containing sulphur (D) availability of amino acids containing hydroxyl groups Answer : (B) 20. Which of the following, when bonded together, would form a polypeptide? (A) 1 amino acid, 2 fatty acids, and a glycerol molecule (B) 5 different amino acids (C) 3 of the same amino acids (D) any 20 amino acids Answer : (D)