The smallest cell structure that would most likely be visible with a standard (not super-resolution)research-grade light microscope is
A) a mitochondrion.
B) a microtubule.
C) a ribosome.
D) a microfilament.
E) a nuclear pore.

Question

Quizplus · Accepted Answer

Mitochondria are typically 0.5-1.0 micrometers in size, which is within the resolution limit of a standard light microscope (about 200 nanometers), making them the smallest structures listed that are likely to be visible. Ribosomes, microtubules, microfilaments, and nuclear pores are all smaller than this limit and would not be clearly visible without more advanced microscopy techniques.

The Smallest Cell Structure That Would Most Likely Be Visible