Question

The students conducted a second experiment, using the raw chicken liver from the previous experiment. They modified the chicken liver and used: one whole piece, one piece cut into two, a piece that they pulverized in a blender. All the livers were the same mass. The liver was placed in test tubes and hydrogen peroxide was then added to each. Here are the results:
Chicken Liver and Enzyme Action
Liver Condition Rate of fizzing
whole 9
two pieces 11
pulverized 14
Based on the students' experiments, what conclusion can be drawn?

A) Mechanical digestion has no bearing on the chemical digestion of food.
B) Chemical digestion, in this case, enzyme activity, is aided by mechanical digestion.
C) Chemical digestion occurs at the same rate regardless of the condition of the chicken liver.
D) The blending represents mechanical digestion and the enzyme activity represents chemical digestion.

Answer 1

B) chemical digestion occurs at the same rate regardless of the condition of the chicken liver.