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14. f. diffusion

15. a. excreting waste

16. b. exocytosis

17. a, endocytosis

Explanation:

14. The movement of molecules from a high concentration to a low concentration is diffusion. Active transport uses energy to move molecules against their concentration gradient (from low to high). Osmosis specifically refers to water molecules. Endocytosis is the movement of molecules inside the cells via the cell membrane engulfing it.

15. The membrane controls the substances that enter and exit the cell, therefore it is involved in excreting waste products from inside the cell.

16/17 Endocytosis is engulfing substances to bring them inside the cell. Exocytosis is the reverse process, where substances exit the cell by fusing with the cell membrane. The movement of molecules from a high concentration to a low concentration is diffusion.  Osmosis specifically refers to water molecules.

bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.