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...

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Medical Sciences

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
EW = Egg White
What do you suppose is the pH of saliva?
2. What do you think will happen to the activity of salivaryamylase in the stomach?
What is the effect of temperature on the activity of salivaryamylase? How do you think that this happened?
4. What class of carbohydrates is starch?
If we had used cellulose in this experiment, how could theresults have been different?

Answer & Explanation Solved by verified expert

4.1 Ratings (826 Votes)

1 pH of saliva is neary neutral whichsalivary amylase shows optimum activity in pH 6772Thus salivary gland secretes bicarbonates along with enzymes 2Enzymes are highly specific for pH and temperatureSalivary amylase works on 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