EW = Egg White Tube No. Digestion (Yes or No) Color Change 1 (EW+Pepsin+Water) No Cloudy, sedimentation 2 (EW+Pepsin+HCl) Yes Clear, little or no...

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Medical Sciences

EW = Egg White
Tube No.
Digestion (Yes or No)
Color Change
1 (EW+Pepsin+Water)
No
Cloudy, sedimentation
2 (EW+Pepsin+HCl)
Yes
Clear, little or no sediment
3 (EW+Pepsin+HCl; in cold)
Some digestion
Clear, more sedimentation
4 (EW+Boiled Pepsin+HCl)
No digestion
A lot more sedimentation
5 (EW+Water+HCl)
No digestion
Cloudy, sedimentation
6 (EW+Pepsin+NaOH)
No digestion
No sediment; pinkish clear
Based on your results, what was the effect of pH change on thedigestion of protein? How does that indicate the conditionhappening in the stomach and what is the optimal condition for thedigestion of protein in the stomach?
2. How would you describe the effect of boiling the enzymepepsin on its ability to digest the egg-white protein? What is thetechnical term for this phenomenon? Please explain the result youhave obtained.
Please comment freely on the fate of both carbohydrate andprotein digestion in the stomach based on the result you haveobtained from this experiment.

Answer & Explanation Solved by verified expert

3.7 Ratings (622 Votes)

EFFECT OF pH CHANGE ON THE DIGESTION OF PROTEIN 1Proteins are digested in the stomach by an enzyme called pepsin This enzyme requires an acidic environment inorder to get activated Thus HCl is secreted by the parietal See Answer

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Tube No.	Digestion (Yes or No)	Color Change
1 (EW+Pepsin+Water)	No	Cloudy, sedimentation
2 (EW+Pepsin+HCl)	Yes	Clear, little or no sediment
3 (EW+Pepsin+HCl; in cold)	Some digestion	Clear, more sedimentation
4 (EW+Boiled Pepsin+HCl)	No digestion	A lot more sedimentation
5 (EW+Water+HCl)	No digestion	Cloudy, sedimentation
6 (EW+Pepsin+NaOH)	No digestion	No sediment; pinkish clear