Today I shall highlight some the properties and functions of cell. • Cells respond to external stimuli. Nastic, tactic and tropic movements are responses to stimuli. •Cells get the energy they need for their activities through cellular respiration, which may be aerobic (uses oxygen) or anaerobic (absence of oxygen). • Conjugation is a simple sexual process. In higher organisms, male gametes or sperms are small and motile, while female gametes or eggs are large with a ...... More click here >>> www.rowlandokonko.com/2016/01/properties-and-functions-of-cells.html?m=0