Question

1. an unknown cell is observed under a microscope. the presence of which structures(s) would suggest that the cell is most likely prokaryotic? dna nucleus chloroplasts plasmids 35. the early study of cells by schleiden and schwann contribute to the formation of the cell theory. what is the most probable reason that these early biologists never viewed the cell organelles known as ribosomes? ribosomes are too small to be seen with early microscopes. ribosomes cannot be observed unless the cell is stained with iodine. primitive cells did not need to synthesize proteins. the presence of ribosomes can only be detected using a centrifuge

Explanation:

1. Prokaryotes often have plasmids, while DNA is in both, and prokaryotes lack a nucleus and chloroplasts.
2. Early microscopes had low resolution, making small ribosomes invisible.

Answer:

1. D. Plasmids
2. A. Ribosomes are too small to be seen with early microscopes.