Answer:
(A) Pepsin
Explanation:
From the graph it is clear that pepsin is the only enzyme which works in highly acidic condintion in the digestive system.
- less than 7 the liquid is acidic
- above 7 the liquid is basic
- at 7 the liquid is neutral
It has an optimum pH of about 1.5 at which its activity level is 8.5 as shown in graph.
Answer:
C is the best answer because we all know that clock is part of our daily lives but we don't know the about its background
Tooth fillings are often made of gold or porcelain because these materials are nonreactive.
b. nonreactive.