The human body is compared to a brick wall. What plays the part of a single brick?
AA cell
BA bone
CAn organ
DA protein
Answer & Solution
Correct answer: A. A cell
1. A brick wall is built from one repeating unit, the brick.
2. The body is likewise built from basic building blocks, and those blocks are cells.
3. Bones and organs are themselves made of many cells, so they are the wall, not the brick.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 4 "Cell Structure", section 4.1 Studying Cells_
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