TAMU ANSC 303 EXAM SCRIPT 2025/2026 QUESTIONS
WITH ANSWERS GRADED A+
✔✔esterases are are specific for - ✔✔the carbons they act on
✔✔3 types of esterases - ✔✔-lipases
-phospholipase
-cholesterol esterases
✔✔lipases work on - ✔✔TAG
✔✔phospholipases work on - ✔✔phospholipids
✔✔cholesterol esterases work on - ✔✔cholesterol esters
✔✔MAG - ✔✔monoacyl glycerol
✔✔DAG - ✔✔diacyl glycerol
✔✔NEFA - ✔✔nonesterified FA not bound to glycerol
✔✔fats are (hydrophobic/hydrophilic) - ✔✔hydrophobic
✔✔digestion of hydrophobic molecules is difficult because - ✔✔digestion occurs in
water & enzymes (proteins) are hydrophilic
✔✔most lipid digestion occurs in - ✔✔the small intestine
✔✔lingual lipase produced ______________ by the __________________ - ✔✔-
continuously
-the salivary gland
✔✔lingual lipase: increased production with - ✔✔increased fat intake
✔✔gastric lipase produced ______________ by __________________ - ✔✔-
continuously
-chief cells
✔✔gastric lipase: increased production with - ✔✔increased fat intake
✔✔both lingual & gastric lipase are stable & functional at - ✔✔low pH
✔✔both lingual & gastric lipase act on (2) - ✔✔-medium/ short chain fatty acids (milk fat)
-Sn3
, ✔✔emulsification in the stomach is - ✔✔physical
✔✔physical emulsification = - ✔✔churning
✔✔physical emulsification's goal is to - ✔✔increase surface area in order to increase
lipid digestion
✔✔undigested lipid - ✔✔decreases gastric emptying (kp)
✔✔small intestine lipid digestion is accomplished by (3) - ✔✔-increasing pH of digestion
-increasing emulsification
-activity of pancreatic lipase
✔✔horses don't have a - ✔✔gall bladder
✔✔bile comes from the - ✔✔gall bladder
✔✔what happens to bile from gall bladder when you increase CCK - ✔✔the secretion of
the bile increases
✔✔while physical emulsification continues in the small intestine, bile also allows for -
✔✔chemical emulsification
✔✔bile is made from - ✔✔cholesterol
✔✔bile is (hydrophobic/hydrophilic) - ✔✔amphipathic (both)
✔✔bile orients itself on fat in way that - ✔✔increases surface area
✔✔bile stabilizes - ✔✔fat droplets
✔✔bile stabilizes fat droplets to - ✔✔enable increase in surface area to be maintained
✔✔HCO3- and pancreatic lipase are - ✔✔related
✔✔allows pancreatic lipase to be active - ✔✔increase in pH
✔✔pancreatic lipase acts on - ✔✔Sn1 & Sn3
✔✔pancreatic lipase requires - ✔✔colipase for optimal activity
WITH ANSWERS GRADED A+
✔✔esterases are are specific for - ✔✔the carbons they act on
✔✔3 types of esterases - ✔✔-lipases
-phospholipase
-cholesterol esterases
✔✔lipases work on - ✔✔TAG
✔✔phospholipases work on - ✔✔phospholipids
✔✔cholesterol esterases work on - ✔✔cholesterol esters
✔✔MAG - ✔✔monoacyl glycerol
✔✔DAG - ✔✔diacyl glycerol
✔✔NEFA - ✔✔nonesterified FA not bound to glycerol
✔✔fats are (hydrophobic/hydrophilic) - ✔✔hydrophobic
✔✔digestion of hydrophobic molecules is difficult because - ✔✔digestion occurs in
water & enzymes (proteins) are hydrophilic
✔✔most lipid digestion occurs in - ✔✔the small intestine
✔✔lingual lipase produced ______________ by the __________________ - ✔✔-
continuously
-the salivary gland
✔✔lingual lipase: increased production with - ✔✔increased fat intake
✔✔gastric lipase produced ______________ by __________________ - ✔✔-
continuously
-chief cells
✔✔gastric lipase: increased production with - ✔✔increased fat intake
✔✔both lingual & gastric lipase are stable & functional at - ✔✔low pH
✔✔both lingual & gastric lipase act on (2) - ✔✔-medium/ short chain fatty acids (milk fat)
-Sn3
, ✔✔emulsification in the stomach is - ✔✔physical
✔✔physical emulsification = - ✔✔churning
✔✔physical emulsification's goal is to - ✔✔increase surface area in order to increase
lipid digestion
✔✔undigested lipid - ✔✔decreases gastric emptying (kp)
✔✔small intestine lipid digestion is accomplished by (3) - ✔✔-increasing pH of digestion
-increasing emulsification
-activity of pancreatic lipase
✔✔horses don't have a - ✔✔gall bladder
✔✔bile comes from the - ✔✔gall bladder
✔✔what happens to bile from gall bladder when you increase CCK - ✔✔the secretion of
the bile increases
✔✔while physical emulsification continues in the small intestine, bile also allows for -
✔✔chemical emulsification
✔✔bile is made from - ✔✔cholesterol
✔✔bile is (hydrophobic/hydrophilic) - ✔✔amphipathic (both)
✔✔bile orients itself on fat in way that - ✔✔increases surface area
✔✔bile stabilizes - ✔✔fat droplets
✔✔bile stabilizes fat droplets to - ✔✔enable increase in surface area to be maintained
✔✔HCO3- and pancreatic lipase are - ✔✔related
✔✔allows pancreatic lipase to be active - ✔✔increase in pH
✔✔pancreatic lipase acts on - ✔✔Sn1 & Sn3
✔✔pancreatic lipase requires - ✔✔colipase for optimal activity
