Biol221 - Organismal Biology

Introduction to Organismal Biology (BIOL221) - Dr. S.G. Saupe; Biology Department, College of St. Benedict/St. John's University, Collegeville, MN 56321; ssaupe@csbsju.edu; http://www.employees.csbsju.edu/ssaupe/

Quiz: Digestive System Structures

Definition:

zymogen

Short Answer:

Explain why certain digestive tract enzymes are released from cells in an inactive form.
Identify two ways that pepsinogen is converted to its active form, pepsin?
How is trypsinogen converted to its active form, trypsin?
How are chymotrypsinogen and pro-carboxypeptidase converted to their active forms?
What is the function of bile? Explain how it works. Relate the function of bile to s/v ratios.

Enzyme Question: Complete the table for each of the following enzymes. Identify where each enzyme is produced, the substrate for the enzyme and its product(s).

Table 1: Digestive Enzyme Summary Table
Enzyme	Substrate	Product(s)	Where produced
aminopeptidase
amylase
carboxypeptidase
chymotrypsin
lipase
pepsin
trypsin

Hormone Matching – Match each of the following with the appropriate hormone.

a. gastrin b. secretin c. choleocystokinin (CCK)

_____ produced in the stomach
_____ produced in the small intestine (2 answers)
_____ stimulates parietal cells to release HCL
_____ stimulates the pancreas to release bicarbonate
_____ stimulates the pancreas to release digestive enzymes
_____ stimulates the gall bladder to release bile
_____ slows peristalsis in stomach
_____ released in response to fats
_____ production stimulated by acidic chime

Hydrolysis Fill-In-the-Sentence Question: Complete each of the following sentences with the name of the monomer that is produced and the name of the enzyme and its source.

Starch is hydrolyzed to ______________ by the enzyme ______________ that is produced in the ______________ and ______________.
Maltose is hydrolyzed to ______________ by the enzyme ______________ that is produced in the ______________.
Triglycerides are hydrolyzed to ______________ and ______________ by the enzyme ______________ that is produced in the ______________.
Proteins are hydrolyzed to peptides by the combined actions of the enzyme ______________ in the stomach and the enzymes ______________, ______________, ______________ that are produced by the pancreas.
Peptides are hydrolyzed to amino acids by the enzyme ________________ in the small intestine.
Sucrose is hydrolyed to __________ and ______________ by the enzyme ________________.
Maltose is hydrolyzed to ______________ by the enzyme ________________.
Lactose is hydrolyzed to ______________ and _______________ by the enzyme ________________.
The enzymes in the epithelial cells of the small intestine include ______________, ______________, ______________, and ______________.