Question

intro to cells
sample 1
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1 small, round cells; dimpled in the middle. seem to flow in a liquid. some are irregularly shaped/bumpy.
2 blue, circular shaped, some smaller circular structures inside.
3 long, rectangular. green circular structures inside. thick, clear barriers between cells. clear besides green structures.
4 long, rectangular, grey cells with yellow barriers. tiny dot - like structures inside.
5 large, oblong cells. blue. can see something small and and round in each one. many tiny little dots within each. have a barrier that separates them from surroundings.

Explanation:

The image shows small, round cells that are dimpled in the middle, appear to flow in a liquid, and some have irregular/bumpy shapes. This matches the description of red blood cells, which fits option 1.

Answer:

1. Small, round cells; dimpled in the middle. Seem to flow in a liquid. Some are irregularly shaped/bumpy.