Biology
Excretion is best described as the removal of

Water molecules from dipeptide hydrolysis
Toxic wastes by the process of cyclosis
Metabolic wastes from a cell
Undigested material from the digestive tract

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Biology
Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?

Character of semi permeable membrane is not given
All are incorrect
The flow of solution is not possible through semi permeable membrane
Exact concentration of solution is not given

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