Question

What was the purpose of the vinegar in the third trial? test the effect of raising pH on enzyme action test the effect of lowering pH on enzyme action serve as a control served no purpose

Answer 1

Enzyme is a protein in nature and in real sense, it is affected by various factors such as temperature, pH, enzyme concentration, substrate concentration, enzyme inhibitors among others.

So considering the addition of vinegar and being that it is acidic in nature, the addition of vinegar alters the pH of the given solution.

So due to the fact that enzymatic activities are affected by changes in the pH, the activity of the enzyme is affected too.

It will depend on whether the enzymes work best in acidic or basic medium.  

Read more on Brainly.in - https://brainly.in/question/6852942#readmore

Answer 2

Just finished that project! I believe the answer was "test the effect of lowering pH on enzyme action"! I can't go back and check as of right now if I got it correct or not, but I'm just assuming that is the correct answer. Whenever I can check it I'll fix my response here in the comments or just say I was correct.

I concluded that by using the fact that vinegar is an acid. As acids are lower on the pH scale, adding vinegar would lower the pH level. With that in mind, you can assume that they're attempting to test the effects of lowering the pH level.