(c) Identify the plasmid that must contain the CD3 core promoter sequence but the fewest or no negative regulatory sequences. Based on the data in Figure 2 describe the most likely cause of the variation in luciferase actritty among the cells that contain plasmids PCD34-419, pCD3--309, pCD3--239, and pCD3--199. Calculate the approximate percent increase in luciferase activity between cells containing plasmid pCD3--50 and cells containing plasmid pCD3--149. Round to the nearest whole number. ​

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homeostasis is the tendency towards a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes. and this is how it applies to the integumentary system. back to top. skin functions in homeostasis include protection, regulation of body temperature, sensory reception, water balance, synthesis of vitamins and hormones, and absorption of materials. when body temperature falls, the sweat glands constrict and sweat production decreases.