Question

question #21
a student collects and records data about two different cells in a table.
based on an analysis of the information, which conclusion is supported with the best reasoning?
a cell a is a bacterial cell because it is microscopic.
b cell b is a plant cell because it is very large.
c cell a is a bacterial cell because it lacks membrane - bound organelles.
d cell b is an animal cell because it can be seen with the unaided eye.

Explanation:

Cell A lacks a nucleus and membrane - bound organelles, which are characteristics of prokaryotic cells (like bacterial cells). Just being microscopic (Option A) is not a sufficient reason as many eukaryotic cells are also microscopic. Cell B's size (Option B) does not uniquely identify it as a plant cell. Cell B's size (10 - 100 μm) is still microscopic and cannot be seen with the unaided eye (Option D is incorrect).

Answer:

C. Cell A is a bacterial cell because it lacks membrane - bound organelles.