**Step three:** Evaluate each choice
critically before selecting the best answer.

Uncover the answers and read
each one carefully, evaluating the correctness of
each as you go. It is useful to actually put a T or F
next to each number to indicate whether the answer is
true or false. Doing this shows us that answer 4 is
false, and thus the correct choice.

** [Cell A]** is
a roughly **[spherical]** animal cell
with a **[radius of 10 microns]**. **[Cell
B]** is also roughly **[spherical]**
and has a **[radius of 20 microns]**.
Which of the following statements about these two
cells is **[false]**?

- [T] Cell A has a smaller
volume than cell B.
- [T] Cell B has a larger
surface area than cell A.
- [T] Cell A has a larger
surface area–to-volume ratio than does
cell B.
- [F] Cell B has a larger
surface area–to-volume ratio than does
cell A.

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