Answer:
D
Explanation:
Vacuoles are pockets that collect water and the cell's junk. The nucleus sends commands to other cell parts and contains DNA.
Why it isn't A: Both have membranes.
Vacuole- tonoplast. Nucleus- Nuclear membran.
Why it isn't B: The Vacuole is not a thick fluid, though it may <em>hold</em> thick fluid.
Why it isn't C: This should be obvious.
Stores spermatozoa temporarily
Answer: The basic unit of structure and function is the CELL.
Explanation: All living organisms are made up of cells. Each cell is specialized in it's structure to support the function it is intended for. Groups of specialized cells make up tissue (also specialized for a particular function), this group of specialized tissue makes up an organ, which forms part of a system, and then part of the organism as a whole.