17. Cell membranes have a specific charge difference from one side of the bilayer to the other. Which of the below is true with respect to the structure of the phospholipid bilayer? a. phospholipid heads are non-polar and the fatty acid tails are polar b. phospholipid heads are polar and the fatty acid tails are non-polar c. fatty acid tails are attracted to the aqueous environments inside and outside the cell d. phospholipid heads are attracted to the aqueous environments inside and outside the cell e. both b & d are correct 18. For active transport to occur, what important chemical energy molecule is required? a. glucose b. ATP c. chloroplasts d. mitochondria e. both a & b 19. In discussing the chances of overdosing on vitamins, what about the structure of a cell membrane will make the overdose on vitamin C different than that of vitamins A, D, E, or K? a. water soluble, or polar vitamins can easily pass through the membrane b. lipid-based vitamins cannot pass through the membrane due to their polar charge c. non-polar fatty acid tails within the cell membrane allow lipid-based vitamins to easily pass d. polar phospholipid heads easily allow the water soluble, or polar vitamins to pass into the cell e. none of the above 20. Which of the following is NOT a major function of membrane proteins? a. cell surface identity marker b. transporter c. cell surface receptor d. enzyme factory e. site for enzyme activity 21. Of the four major carbon-based molecules of life, which of these makes up DNA and RNA? a. protein b. carbohydrate c. nucleic acid d. lipid 22. Of the four major carbon-based molecules of life, which of these is the glucose we store for energy?
17. Cell membranes have a specific charge difference from one side of the bilayer to the other. Which of the below is true with respect to the structure of the phospholipid bilayer? a. phospholipid heads are non-polar and the fatty acid tails are polar b. phospholipid heads are polar and the fatty acid tails are non-polar c. fatty acid tails are attracted to the aqueous environments inside and outside the cell d. phospholipid heads are attracted to the aqueous environments inside and outside the cell e. both b & d are correct 18. For active transport to occur, what important chemical energy molecule is required? a. glucose b. ATP c. chloroplasts d. mitochondria e. both a & b 19. In discussing the chances of overdosing on vitamins, what about the structure of a cell membrane will make the overdose on vitamin C different than that of vitamins A, D, E, or K? a. water soluble, or polar vitamins can easily pass through the membrane b. lipid-based vitamins cannot pass through the membrane due to their polar charge c. non-polar fatty acid tails within the cell membrane allow lipid-based vitamins to easily pass d. polar phospholipid heads easily allow the water soluble, or polar vitamins to pass into the cell e. none of the above 20. Which of the following is NOT a major function of membrane proteins? a. cell surface identity marker b. transporter c. cell surface receptor d. enzyme factory e. site for enzyme activity 21. Of the four major carbon-based molecules of life, which of these makes up DNA and RNA? a. protein b. carbohydrate c. nucleic acid d. lipid 22. Of the four major carbon-based molecules of life, which of these is the glucose we store for energy?
final_exam_spring_2016_final_exam_review_topics.docx