SI worksheet 13 answers - SIworksheet13 a b c...

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SI worksheet 13  Which of the following statements about nutrition and digestion is true? a. “feeding” and “digestion” are synonyms  b. chemical digestion typically precedes mechanical digestion in mammals  c. During absorption, small molecules such as amino acids and simple sugars  are absorbed  d. Elimination rids the body of excessive nutrients  e. Small sugars are joined by enzymatic hydrolysis to form large carbohydrates   In vertebrates, food is moved along the length of the digestive system by _____. a. Active transport across cell membranes  b. Peristalsis  c. Diffusion and osmosis  d. Sequential contraction of bands of skeletal muscles  e. Sphincter contraction  Chemical digestion of carbohydrates begins in the _____ with the action of _____. a. Mouth…salivary amylase  b. Stomach…HCl c. Small intestine…Lipase  d. Small intestine…pancreatic amylase  e. Stomach…salivary amylase  How is the stomach lining protected from the strongly acidic pH of its contents? a. It release a hormone called gastrin, which stops gastric juice secretion  b. Mucous cells secrete a protective lubricant into the stomach  c. Bile neutralizes the acid before it enters the stomach  d. Parietal cells secrete a protective buffer to neutralize HCl e. The acid is neutralized quickly when it combines with pepsinogen to make pepsin Which of the following processes, structures, or conditions are properly matched?
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