IB SEHS OPTION D: Nutrition for Sport,
Exercise and Health Exam Questions With
Correct Answers
Outline of principle components of the digestive system - answer✔Mouth
Esophagus
Stomach
Small intestine
Large intestine
Pancreas
Liver
Gall bladder
Mouth (Digestion) - answer✔Mechanical and chemical digestion
Esophagus (Digestion) - answer✔Peristalis action
Stomach (Digestion) - answer✔Rugae, Lumen, mucous coating
Small intestine (Digestion) - answer✔Villi and Microvilli
Large intestine (Digestion) - answer✔Water balance and vitamin absorption
Pancreas (Digestion) - answer✔Production of enzymes
Liver (Digestion) - answer✔Production of bile
Gall bladder (Digestion) - answer✔Storage of bile
Ph level in the moth - answer✔5.5 to 7.5
Ph level in the stomach - answer✔1.0 to less than 4.0
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Ph level in small intestine - answer✔6.0 to 8.0
Enzymes in digestion - answer✔Highly specific protein catalyst that aid the breakdown of large
food molecules into smaller substances which can then be absorbed by the gut or the small
intestine
What speeds up the rate of digestion? - answer✔Enzymes
Different enzymes - answer✔Aid with the increase rate of digestion of only one substance.
Enzymes are produced - answer✔In the various places in the digestive tract such as:
Salivary glands
Tongue
Stomach
Pancreatic juice
Small intestine
Enzyme activity - answer✔Increases with temperature until 37 degrees (normal body
temperature) and enzyme activity decreases above abnormal body temperature
Ph and enzymes - answer✔Most enzymes have an optimum PH
Hence the various Ph levels in the digestive system
Carbohydrate enzymes - answer✔Salivary amylase and
Pancreatic amylase
Fat enzymes - answer✔Pnacreatic lipase and
Bile
Protein enzymes - answer✔Pepsin and
Trypsin
From the intestinal lumen - answer✔Small broken substances cross the brush-border membrane
of the intestine cells
Carbohydrates are absorbed into the capillary network as - answer✔Monosacherides
Protein are absorbed into the capillary network as - answer✔Amino acids and peptides
Fats are absorbed into the lymph as - answer✔Fatty acids and monoglycerides