What do eukaryotic single-celled organisms have that serve the same purpose as organs?
A. particles
b. molecules
c. organelles
d. tissues

c. organelles

Explanation:

The system of living organisms encompasses structures called ORGAN, that plays a specific role in the organism's system. At the cellular level, structures called ORGANNELLES play a specific role in the cells of living organisms.

All EUKARYOTIC cells including the unicellular one like yeast mentioned in the question contain structures embedded in the cytoplasm of a cell that forms specific cellular functions in that cell, called ORGANNELLE. Organnelles in eukaryotes include Mitochondrion, Chloroplast, Ribosomes, Nucleus etc. They function to play a major role in the cell, which is usually specific. For example, Chloroplast is the site of Photosynthesis and it contains the Chlorophyll pigment.

Hence, in nutshell, the organs in a living system and the organnelles in a living cell have the fact that they perform specific tasks in common.

not only is it colder, it also becomes darker, less salty, and more dense.