3
QuizMultiple Choice

Unit Test — Unit test

Question 3 • AISD-Biology A CR - (25-26)

A scientist is comparing the outer layer of an onion cell to the outer layer of a human skin cell. What is unique about the outer layer of the onion cell compared to the skin cell?

Answer
A
It contains proteins.
B
It contains cellulose.
C
It contains carbohydrates.
D
It is selectively permeable.
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