They can be used to contain cellular waste and to isolate materials that may be harmful to the cell.
Yes it is therefore the answer is true
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The train traveled 100km (50x2) down and then 375km (75x5) up. So the train is 275km (375-100) up from where it started.
photosynthesis produces oxygen and glucose as the end products whereby the glucose is used as food by plants and oxygen as a byproduct.
cellular respiration produces water and carbon dioxide and the end products and by products where by energy is stored
