When Partially Digested Food Enters the Small Intestine from the Stomach

question 28

Multiple Choice

When partially digested food enters the small intestine from the stomach, several events must occur to protect the intestine and allow for the continued digestion of the food. One hormone in particular performs two of these functions. What intestinal hormone is responsible for causing the pancreas to release digestive enzymes and the gall bladder to release bile salts into the intestine?

• A) secretin
• B) cholecystokinin
• C) epinephrine
• D) corticosterone
• E) insulin

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Definitions:

Supercoiling

The over- or under-winding of DNA's double helix, affecting its access for replication, transcription, and repair processes.

Sugar-Phosphate Bonds

Covalent bonds that connect sugar and phosphate molecules, forming the backbone of nucleic acid structures like DNA and RNA.

Okazaki Fragments

Short sequences of DNA nucleotides synthesized discontinuously and later linked together to form the lagging strand during DNA replication.

Heavy Nitrogen (15N)

A stable isotope of nitrogen, used in scientific studies to trace nitrogen pathways and cycles in the environment or organisms.