39. Which of the following substances would the body employ to provide the myeli

Question

39. Which of the following substances would the body employ to provide the myelin sheath (insulation) for nerves? a) carbohydrates b) proteins c) cholesterol d) AOTA e) NOTA Neutrons tend to stabilize the nucleus of atom? a) True b) False 40. 41. An organic substance is a substance that contains carbon? a) True b) False 42. An example of a polysaccharide would be: a) glucose b) glycogen c) cellulose d) maltose e)Band C 43. All proteins have a carboxyl group on one end plus a/an: a) amine group b) acid group c) glucose group d) AOTA e) NOTA necessary 44. Polar covalent bonds result from ansharing of electrons and are for the formation ofbonds a) equal/ionic b) equal/covalent c) unequal/ionic d) unequal/hydrogen e) equal/peptide 45. Enzymes: a) are organic (protein) catalysts b) increase the rate of chemical reactions by lowering their activation energy c) are specific in terms of their function d) allow the complex chemical reactions found in living organisms to occur rapidly enough to sustain life at their relatively low body (cellular) temperatures ) AOTA

Explanation / Answer

39. Cholesterol is important lipid in nyelin.

40. True. The strong nuclear force held together proton and neutron by spin pairing force. As the number of protons goes up, more neutrons are require to stabilize the nucleus.

41. True. An organic substance is a substance that contains carbon

42. An example of a polysaccharide would be

Glycogen and cellulose are composed of glucose.

Cellulose is a structural polysaccharide in plant cell wall. Glycogen acts as energy stores in animals.

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