BIOL2930 1752 LAB 10 DIGESTIVE ENZYMES POST-LAB [Compatibility Mode] Mailings Re
ID: 3516449 • Letter: B
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BIOL2930 1752 LAB 10 DIGESTIVE ENZYMES POST-LAB [Compatibility Mode] Mailings Review View Aste AMBbccDEBd Heading 1.0 :No spacing-l | Heading 2 AaBb Normal Titde Experiment #3: You conduct an experiment to investigate the effects of bile salts on fat digestion. Use the results presented in Table 3 to answer questions 4 & 5. This is similar to what you did in lab. Refer to your notes. Table 3: Experiment #3 Results Test Tube Contents Cream, pancreatin Cream, pancreatin, bile salts pH at time 0 6.7 7.4 pH after 1 hour 6.0 6.2 Test Tube # 2 4. (2pts] Why does pH decrease with fat digestion? [3pts) Analyze the data. Show some calculations. Using your analysis as evidence, explain the effect of bile salts on fat digestion. 5.Explanation / Answer
4) ans-- on digestion of fats it converts into fatty acids and glycerol. Being acidic in nature fatty acids decrease the pH. Glycerol is also acidic in nature because of presence to three hydroxy groups in it. So both together leads to decrease in pH during digestion of fats.
5) ans-- (a) emulsification of lipid aggregates- bile acids have detergent action on particles of dietary fat which causes fat globules to break down or to be emulsified into minute microscopic droplets.
(b) solubilization and transport of lipids in an aqueous environment.- bile acids are lipid carriers and are able to solubilize many lipids by forming micelles- aggregates of lipids such as fatty acids, cholesterol and monoglycerides that remain suspended in water. Bile acids are also critical for transport and absorption of fat soluble vitamins like vitamin A, vitamin -D, vitamin- E, vitamin- K.
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