Students conducted an experiment to check the rate of enzyme action on different types of food. the table shows the results
of an experiment in which students placed hydrogen peroxide on several food samples and recorded the relative amount of
fizz that each produced. the fizz was produced by oxygen bubbles released by the action of the enzyme catalase, which is
found in almost every living cell
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
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 fizing
whole
two pieces 11
pulverized
14
based on the students experiments, what conclusion can be drawn?
mechanical digestion has no bearing on the chemical digestion of food.
chemical digestion in this case, enzyme activity, is aided by mechanical
di gestion
chemical digestion occurs at the same rate regardless of the condition of
the chicken liver.
the blending represents mechanical digestion and the enzyme activity
represents chemical digestion