Compare the effects of HCI on protein digestion by pepsin and onstarch digestion by salivary amylase. Explain the physiologicalsignificance of these effects
Compare the effects of HCI on protein digestion by pepsin and onstarch digestion by salivary amylase. Explain the physiologicalsignificance of these effects
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QUESTION 9
How did this experiment with Benedict's solution demonstrate the digestion of starch by amylase? In other words, how did you know the starch was digested?
| We compared control samples with samples that had been treated with amylase and measured the pH using a pH indicator. When the solution becomes orange or red, it indicates that the starch has been digested. | ||
| We compared control samples with samples that had been treated with amylase and used a Benetict's test for Reducing Sugar. When Benedict's turns orange/red it indicates that starch has been digested. | ||
| We compared control samples the sample to been treated with amylase and observed which had become liquefied. The solution becomes liquefied, it indicates that the starches have been digested. | ||
| Compare control samples with samples that had been treated with amylase. Benedict's turns light blue it indicates that starch has been digested. |
QUESTION 10
What happens to saliavry amylase when it arrives with the bolus in the stomach? Because of this, what happens to charbohydrate digestion? (Hint: Look up the optimum pH for amylase and what is the pH of the gastric juices)
| When the bolus hit the stomach, the amylase enyzmes continue to function and starch digestion continues. | ||
| When the bolus hit the stomach, the amylase enyzmes denature and cease to function and starch digestion stops. | ||
| When the bolus hit the stomach, the amylase enyzmes denature and cease to function. However, starch digestion continues because pepsin continues the digestion of starch. |
During the ten days that Shuji was taking a broad-spectrum antibiotic, the yeasts populating his large intestine probably increased.
True
False
4 points
QUESTION 17
Overall, very little chemical digestion occurs in the mouth.
True
False
4 points
QUESTION 18
Untreated diarrhea can be fatal in young children.
True
False
Salivary amylase begins the digestion of which nutrient in the mouth?
| vitamin B12 | ||
| fat | ||
| carbohydrate | ||
| protein Many lactose-intolerant people can digest aged cheese and yogurt with live, active cultures without any gastrointestinal distress. True False |
