1/45
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
---|
No study sessions yet.
What molecule is the precursor of pepsin and the cell that produces it?
pepsinogen; chief cells
How are chief cells activated into pepsin?
HCl in the stomach
What molecule does pepsin hydrolyze (break down)? (What is its substrate?)
Products?
Optimal pH for hydrolysis reaction (proteins → peptides)?
Cells that produce the chemical to provide optimal pH?
pH 2; parietal cells
How did the pH of the solution change after pepsin digestion (hydrolysis)?
Why?
What structure in the pancreas produces pancreatic lipase?
serous acini
Lipid Digestion by Pancreatic Lipase & Bile Salt: How did the pH of the solution change after pancreatic lipase digestion (hydrolysis)? Why?
Decreased; fatty acids contribute to pH decrease.
What color does litmus have in an acidic & basic environment?
pink; blue/lavender
What cells produce bile?
hepatocytes
Function of bile salts in digestion?
emulsifies lipids to increase surface area for enzymes
In an experiment, what’s the purpose of the negative control groups, positive control groups, and experimental groups?
Control groups let you compare your experimental group to what a positive and negative result would look like.
What does IKI test for?
Starch
What does Benedict’s test for?
Glucose & reducing sugars
Describe all applicable negative & positive control molecules & expected results.
What structure in the pancreas produces pancreatic amylase?
serous acini
What molecule does pancreatic amylase hydrolyze (break down)? How did you test for this substrate?
Starch, IKI test
What are the products of the hydrolysis of pancreatic amylase, and how did you test for them?
Maltose & reducing sugars; Benedict’s reagent
Mouth and salivary glands secretion?
Volume/day mouth and salivary glands?
1 L/day
Digestion of mouth and salivary glands?
Absorption of mouth and salivary glands?
None; nitroglycerin
Stomach secretion?
Volume/day stomach?
2 L
Motility of mouth and salivary glands?
tongue aids to form bolus; deglutition
Motility of stomach?
Mixing waves, gastric emptying
Digestion in stomach?
Absorption in stomach?
alcohol, aspirin
Pharynx and esophagus secretion?
mucus
Volume/day pharynx and esophagus?
none
Motility in pharynx and esophagus?
deglutition, peristalsis
Absorption and digestion in pharynx and esophagus?
None
Pancreas secretion?
Volume/day pancreas?
2 L/day
Motility, digestion, absorption of pancreas?
None
Liver secretion?
bile
Volume/day liver?
1 L
Motility, digestion, absorption of liver?
None
Small intestine secretion?
Volume/day small + large intestine?
1 L/day
Motility of small intestine?
Digestion in small intestine?
Absorption in small intestine?
Motility of large intestine?
haustral churning, mass peristalsis
Digestion of large intestine?
bacterial fermentation
Absorption of large intestine?
water, vitamin B + K