Which cells have no nucleus?<span>Prokaryotic cells (like bacteria) are very simple cells.
Can only be called single-celled?:
</span>A unicellular organism, also known as a single-celled organism, is an organism that consists of <span>only one cell.
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<span>Can either be single- or multi-celled:
</span><span>Eukaryotic cells are cell's that form colonies with a LOT of differentiation are called multicelled</span>
Answer:
Endomembrane system is made up of endoplasmic reticulum and Golgi apparatus. Rough endoplasmic reticulum play a key role in protein synthesis, while golgi apparatus is responsible for packaging, modification and transport of proteins to different parts of cell.
the third Choice is the answer i think.
Gravitational waves are ripples in spacetime. They are created whenever objects with mass move. Hope this helps :)