A lab group is sent to the cafeteria to do an experiment.  The instructions direct each student to obtain a regular saltine cracker and to chew it 25 times before swallowing.  Most students record that the cracker initially tastes salty, but then tastes sweet.  Which of the following correctly explains the students’ observations?

Which hormone functions to counteract the effect of gastric acid in the small intestine?

Experiment Questions 54.  Identify the specific foodstuff we digested in the lab with pepsin. Which enzyme did we use to digest starch? What is the function of bile salts?   Which tube should have turned pink (pinkest) (A)Tube with limus cream + pancreatic lipase (B)Tube with limus cream + bile salts (C)Tube with limus cream + pancreatic lipase + bile salts

Which layer of the GI tract is composed of areolar connective tissue containing blood and lymph vessels?

During defecation

Chymotrypsin is an enzyme that can break down dipeptides into amino acids.

Describe how fat can be used for energy (in other words describe lipolysis).  Include the names of all reactions and intermediate products involved to eventually produce ATP.  (3pts)

What is the green circular structure that line A is pointing to?  

Wally decides to go on a hunger strike to further one of this favorite causes.  After 7 days of ingesting nothing but water, you would expect to observe

Enzymatic Digestion Lab 46.  What is the optimal pH for the protein digestion by pepsin AND what cell provides this optimal pH? . 47. What is the optimal pH for the lipid digestion by pancreatic lipase AND what gland provides this optimal pH? . 48. What molecule does pancreatic lipase hydrolyze?