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?
