The reason why the flow of blood through the capillaries is very slow is

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Which of the following structures is not a skeletal material?

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The longest bone in the body is the

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The following statements about mitotic cell division are correct except that

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Two organelles directly involved in mitotic cell division are

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The curvature movement of plants in response to the stimulus of water is called

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Red blood cells were found to have burst open after being placed in distilled water for an hour. This phenomenon is known as

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In plant cells the role of the membrane is played by the

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The experiment above is used to demonstrate the process of

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After an hour, the level of water in the thistle funnel will

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The cytoplasm of the cell is considered a very important component because it

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A beaker of pond water containing few specimens of Euglena was placed in a dark room for two weeks. At the end of this period, the specimens of Euglena were still alive because they were

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