14. In humans lactase is produced in the small intestine where the pH is between
ID: 281006 • Letter: 1
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14. In humans lactase is produced in the small intestine where the pH is between 7-8 and catalse is produced in tissues that have a pH around 7. Do you think these enzymes would functional optimally in the stomach? Why? 15. Average temperature in the human body is about 37°C, what would happen to the enzymes and rate of reaction if the temperature were raised extremely? How about lowered? 16. Do you think lactase would react with glucose or any other sugars beside lactose? Explain. 17. Which tissue, animal or plant, showed the most catalase activity? How did you show this? 18. Hydrogen peroxide is used to bleach/whiten teeth. Decreasing catalase levels as you get older has been linked to graying hair. Explain why this might occur.Explanation / Answer
Answer 15- The shape of an enzyme depends on its temperature. When enzyme gets too warm , they get too close. And when they get too cold, then they get too tight. When the temperature is just right , they get in the right shape and the chemical reaction they catalyze takes place at the optimal rate . When the temperature is too hot or too cold, or gets unsteady, the enzyme will not remain in the optimal shape for a long time,
Temperature plays an important role in the function of enzyme. For this reason, doctors have long been concerned about patients having very high fevers. If the temperature gets too high, the patents brain enzymes gets denatured or become malformed and can even be life threatning. Same hapens in the case if the temperature gets too low (hypothermia). As the temperature rate is increased, the enzyme reaction rate will go faster until it reaches its optimal reaction rate. When the temperature gts increased too much, the rate of reaction will diminish due to denaturing or change in shape of enzyme.
Answer 16- Lactose is a milk sugar, we consume it many time we drink milk or any dairy products. To absorb its components and use them for energy, we digest it with lactase , an enzyme produced by our digestive tract.
Lactase reacts with lactose, splitting it into two smaller molecules, glucose and galactose that we can absorb
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