Lab exercise 11

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created 6 years ago by naimad02
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Enzymes Activity
Grade levels:
College: Second year
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1
  1. What are enzymes?

Proteins that facilitate chemical reactions in the cell

2
  1. What environmental factors affect an enzyme’s activity?

fluctuations in temperature and pH

3
  1. Predict the how boiling an enzyme would affect its activity.

chemical reactions are faster as temperature increases, so boiling pH values would denature ( unravel) enzymes to deactivate them

4
  1. Distinguish between starch and sugar.

...

5
  1. Describe the function of salivary amylase. What is its substrate and product?

It breaks down into the disaccharide maltose in our mouths.

Substate is Starch and Product is disaccharide maltose

6
  1. Which pH and temperature are ideal for salivary amylase activity?

...

7
  1. What reagent is used to detect starch? What color does it turn in the presence of starch?

Lugol's reagent

color is Blue-Black

8
  1. What reagent detects sugar?

Benedict's reagent

color is yellow to orange and red