Figure 5.

Time course of ³²P-phosphate removal from the external medium during three consecutive pulses of 5 µM. The content of bacterial phosphorus of the suspension of A. variabilis was likewise 5 µmol·L⁻¹. Experimental conditions as in Figure 4. The curves represent the best computer fit using the equation: d[P_e]/dt = −L_p · (ln[P_e] − ln[P_e]_A) with the parameters: L_p = 0.111 µM min⁻¹, [P_e]_A = 0.108 µM, (first pulse); L_p = 0.061 µM min⁻¹, [P_e]_A = 0.110 µM, (second pulse); L_p = 0.029 µM min⁻¹, [P_e]_A = 0.14 µM, (third pulse).