While organic molecules are the focus of discussion, water is the most abundant molecule constituting 70-90% of the cell's mass. Among organic biological molecules, carbohydrates like cellulose are the most abundant, but the question specifies "in the living world," making water the correct overarching answer.
While organic molecules are the focus of discussion, water is the most abundant molecule constituting 70-90% of the cell's mass. Among organic biological molecules, carbohydrates like cellulose are the most abundant, but the question specifies "in the living world," making water the correct overarching answer.