Explanation:
the answer to this question is prokaryotic cells lack memebrane bound organelles and eukaryotic cells contain membrane bound organelles
None because they are children play toys not scientific tools!
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The bacterium Escherichia coli
Answer:
List the features of gas exchange surfaces in animals.
1)They are moist to prevent the cells from drying and to allow gases to dissolve;
2)They have a large surface area , so that a lot of gas can diffuse across at the same time;
3)They have a high concentration gradient - maintained by the movement of air & blood.
