This document discusses a lysozyme protein molecule found in tears that protects the eye from bacterial infections. It states that mostly hydrophilic R-groups are on the surface of the molecule. When proteins are heated, they usually denature. For a molecule of DNA, if moderate heat was applied, the nitrogen base pairs would separate in the interior of the molecule first due to weak hydrogen bonds between the pairs.

30. Enzymes

32. Storage

33. Structural

34. Tansport

35. Hormonal

36. Receptor

37. Contractile & Motor

38. Defensive

39. This lysozyme protein molecule is found in tears and protects the eye from bacterial infections. Which of the following best describes the outside of the molecule? Mostly hydrophobic R-groups are on the surface of the molecule. b) Mostly hydrophilic R-groups are on the surface of the molecule. c) The R-groups on exterior of the molecule are mostly non-polar. d) The R-groups on the exterior are constantly changing between non-polar and polar as the protein chain bends and folds. 0

40. This lysozyme protein molecule is found in tears and protects the eye from bacterial infections. Which of the following best describes the outside of the molecule? b) Mostly hydrophilic R-groups are on the surface of the molecule. 0

44. When proteins are heated, they usually denature. If moderate heat was applied to this molecule of DNA what part of the molecule would break down or break apart first? (Use your knowledge of chemical bonds.) A The nucleotides along each side would break apart. B The sugar-phosphate backbone would separate from the nitrogen bases. C The nitrogen base pairs would separate in the interior of the molecule. 0

45. When proteins are heated, they usually denature. If moderate heat was applied to this molecule of DNA what part of the molecule would break down or break apart first? (Use your knowledge of chemical bonds.) C The nitrogen base pairs would separate in the interior of the molecule. 0