They have a cell wall and nucleus but they have no membrane-bound organelles like eukaryotic cells
Answer:
A
Explanation:
An isolated system can NOT exchange energy or matter with it's surroundings. This is why it is isolated.
I think the answer is d not quite sure tho
Answer:
At times the virus activity appeared to sediment at a rate comparable with that of particles about 80 to 120 mµ in diameter, at other times at a rate comparable with that of particles about 10 mµ in diameter,
Explanation:
A<span>utotrophs differ from heterotrophs in that only autotrophs can make their own food
Hope this helps!</span>