Answer:
cells are so small because it is structural functional unit of an organism which can be only seen through microscope
Pretty sure the correct answer would be Choice A
I believe it is number 3.
Hope this helps!
The answer is letter A.
<span>Organelles and other cellular material are held within a cell by a cellular membrane. These membranes are what consist of a cell's exterior.
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Answer:
The second line of defence is nonspecific resistance, which kills intruders in a broad manner without focusing on specific individuals: phagocytic cells ingest and kill any germs that enter body tissues.
Explanation:
