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Unformatted text preview: H. The transport of solutes across a semipermeable membrane against the concentration gradient and requiring cellular energy 6. (4 points) The figure is what type of biomolecules? a. amino acid b. carbohydrate c. lipid d. nucleic acid 7. (4 points) The predominate functional group(s) in the above figure is(are) a(an) a. carboxylic acid group. b. amino group. c. hydrophobic group. d. hydroxyl group. CH375 Introduction to Biology 2007-2 Cadet _____________________________ 30 point quiz No. 2 I hour 8. (4 points) The two strands of DNA in the double helix are held together by a. covalent bonds. b. van der Waals forces. c. salt bridges. d. hydrogen bonds. 9. (3 points) Which of the following substances can free pass through a plasma membrane? a. Glucose b. an amino acid c. a sodium ion d. water Extra credits (3 pts) What is/are the forces that hold together the phospholipids in a cell membrane? van der Waals forces or hydrophobic bonds...
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- Fall '08
- Mole, Amine, Carboxylic acid, Functional group