Q20 of 56 Page 170

Which of the following is an incorrect statement?

Movement of molecules does take place among cells. The cell membranes are selectively permeable and allow the movement of molecules among cell. When the movement of molecule across the cell does not require energy, it is called passive transport. Movement of molecules require energy is called active transport.

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Choose the correct path of urine in our body:

 1

Write true or false for the following statements:

The chemical process involved in the removal of harmful metabolic wastes from the body is called excretion.

 2

Write true or false for the following statements:

Just as CO2 is removed from the blood in the lungs, nitrogenous wastes such as urea or uric acid are removed from blood in the liver.