21
QuizMultiple Choice

Analyzing Evidence — Unit test

Question 21 • PA Human Anatomy & Physiology A 2026-2027 SMITH IC

Why have improvements in microscopes over time resulted in revisions in the cell theory?

Answer
A
They have revealed new information about cell structure and processes.
B
They have made microscopes easier to use.
C
They have allowed scientists to share pictures of the cells being studied.
D
They have made it possible to confirm what scientists already suspected.

Explanation

Improved microscopes let scientists see cells in greater detail and observe processes that earlier tools could not reveal. Those discoveries added to or changed scientific understanding of cells, leading to revisions in cell theory. The correct choice is A, “They have revealed new information about cell structure and processes.”

AI-written and checked against the verified answer.

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