Question

1. digestive enzymes pepsin and trypsin are two of the digestive enzymes that break down protein. a group of students studied the ph requirements of these enzymes. the graph below shows the results. the students found that pepsin functions best in an acid environment and trypsin functions best in a neutral environment. based on their observations, pepsin most likely aids in digestion in which part of the human body? a) stomach b) mouth c) intestines d) pancreas 10. enzymes are proteins that help increase the rate of chemical reactions inside cells. these proteins are composed of many simpler molecules called amino acids. which of the following suggests that the shape of an enzyme determines the enzymes function? a) enzymes are activated by neighboring molecules b) enzymes are specific to a substrate c) enzymes can operate in a wide range of conditions d) enzymes can be found in all life - forms

Explanation:

For question 9, the stomach has an acidic environment. Since pepsin functions best in an acid environment, it is likely to aid in digestion in the stomach. For question 10, enzymes being specific to a substrate implies that the shape of the enzyme (which fits with the substrate like a lock - and - key) determines its function.

Answer:

1. a) stomach
2. b) enzymes are specific to a substrate