Question

1. match the enzymes with their substrates and functions.

a. amylase
b. protease
c. lactase
d. dna polymerase
e. maltase
f. atp synthase

1. synthesizes dna
2. digests sugar in beer (maltose)
3. digests starch (amylose)
4. synthesizes atp
5. digests milk sugar (lactose)
6. digests proteins
7. base your answers to the following questions on the graph below and on your knowledge of biology.
8. what is the optimal ph for pepsin?
9. is this ph acid or basic?
10. in what organ of the digestive system does pepsin work?
11. what is the optimal ph for trypsin?
12. in what organ of the digestive system does trypsin work?
13. is this ph acid or basic?
14. neither enzyme works at a phs of

Explanation:

Step1: Recall enzyme - substrate and function knowledge

Amylase digests starch (amylose), so A - 3.

Step2: Recall protease function

Protease digests proteins, so B - 6.

Step3: Recall lactase function

Lactase digests milk sugar (lactose), so C - 5.

Step4: Recall DNA polymerase function

DNA polymerase synthesizes DNA, so D - 1.

Step5: Recall maltase function

Maltase digests sugar in beer (maltose), so E - 2.

Step6: Recall ATP synthase function

ATP synthase synthesizes ATP, so F - 4.

Step7: Analyze pepsin graph

The peak of the pepsin graph is at pH = 2 - 3, so the optimal pH for pepsin is 2 - 3.

Step8: Determine pH nature

A pH less than 7 is acidic, so the pH of 2 - 3 for pepsin is acid.

Step9: Recall pepsin location

Pepsin works in the stomach.

Step10: Analyze trypsin graph

The peak of the trypsin graph is at pH = 8 - 9, so the optimal pH for trypsin is 8 - 9.

Step11: Recall trypsin location

Trypsin works in the intestine.

Step12: Determine pH nature

A pH greater than 7 is basic, so the pH of 8 - 9 for trypsin is basic.

Step13: Find non - working pH

From the graph, neither enzyme works at pH = 0 and pH = 14.

Answer:

1. A. 3

B. 6
C. 5
D. 1
E. 2
F. 4

1. 2 - 3
2. acid
3. stomach
4. 8 - 9
5. intestine
6. basic
7. 0 and 14