Effect of Acidity and Alkalinity on Enzyme Reaction

Q.

Explain the importance of pH testing in everyday life?

Q.

Chief function of HCl is.

1. To maintain low pH to promote growth of microorganisms

2. To facilitate absorption

3. To maintain low pH to activate pepsinogen to form pepsin

4. To dissolve enzymes secreted in stomach.

Q.

If for some reason the parietal cells of the stomach epithelium become partially non-functional, what is likely to happen?

1. Steapsin will be more effective

2. The pH of stomach will fall abruptly

3. The pancreatic enzymes and specially the trypsin and lipase will not work efficiently

4. Proteins will not be adequately hydrolysed by pepsin into proteoses and peptones

Q.

Where are proteins first digested in the alimentary canal?

Q.

At what pH does pepsin work best?

Q.

Mention the function of Lipase.

Q.

Which functions are performed by enzymes secreted in human digestive system?

Q.

Why are enzymes important to humans?

Q.

Which enzyme is responsible for digesting proteins in the stomach?

1. HCl

2. Trypsin

3. Ptyalin

4. Pepsin

Q.

What are the three tasks of the stomach?

Q. What are enzymes? Name any one enzyme of the digestive system and write its function.

Q.

How serious is bile reflux?

Q. Why does HCL not crode the mucus
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Q. How is required pH maintained in the stomach and small intestine?

Q. List the enzymes and their action on food in the stomach and intestine.

Q. Write about the digestive juice of the enzymes.

Q.

Correct the spelling: HLC

Q. We know that to dilute an acid we must add acid to water to have a safer situation as water added to acid produces heavy heat. So how is it controlled in our stomach when we drink water ?

Q.

Define the following:

Enzymes

Q. maam what is the ph of hcl in our stomach

Q. When taking an antacid tablet, which of the following enzyme-substrate pairs is most affected by the subsequent change in pH that takes place in the stomach?

1. Maltase - maltose
2. Pepsin - proteins
3. Nuclease - nucleic acids
4. Lipase - lipids
5. Amylase - disaccharides

Q. Optimum pH for activation of pepsinogen is

1. $10$
2. $6$
3. $8$
4. $1.5-2$