Question

the effect of ph on enzyme activity
what can be inferred using the graph?
cells function best at high ph values.
cells do not function well at ph values that are too high or too low.
cells can function equally as well at all ph values.
cells function best at low ph values.

Explanation:

Step1: Analyze graph shape

The graph shows a bell - shaped curve with rate of reaction on y - axis and pH on x - axis. The rate of reaction (related to enzyme activity and cell function) is highest at an intermediate pH and decreases at both low and high pH values.

Step2: Evaluate options

• Option A: The graph does not show cells function best at high pH values.
• Option B: Since the rate of reaction drops at high and low pH, cells do not function well at such pH values.
• Option C: The graph clearly shows different rates at different pH values, so cells do not function equally well at all pH values.
• Option D: The graph does not indicate cells function best at low pH values.

Answer:

B. Cells do not function well at pH values that are too high or too low.