Diffusion of Water Across Plasma Membrane Of RBC'S

INTRODUCTION: DIFFUSION OF DYE THROUGH AGAR GEL Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. The rate at which molecules diffuse can be determined by the relationship of molecular weight and that rate of diffusion through a membrane. Hypothesis of this experiment is that the fluid with higher molecular weight will diffuse at a slower rate and distance. METHODS AND MATERIALS: DIFFUSION OF DYE THROUGH AGAR GEL In order to assimilate

Effects of Tonicity on Cell Membrane Abstract The purpose of this experiment was to determine the effects of tonicity on a cell membrane using red blood cells, potato strips and three unknown solutions (A, B, C). First three slides were prepared containing RBC’s and unknown solutions A, B and C. A control slide was prepared only using RBC’s. After observing each slide under the microscope it was determined that unknown solution A was hypertonic because the RBC appeared to have shrunk. The

passive transport called diffusion, across a concentration gradient. Water soluble substances such as sugars and inorganic ions diffuse very slowly, with no energy expenditure. It is a uniport mechanism and demonstrates saturation kinetics where the glucose specific receptors are all occupied and operating at max capacity. 13. Understand the transportation of potassium and sodium across plasma membranes. (p. 10 bottom right, p. 20 bottom right, p. 21 diagram) Membranes can allow or exclude various

Chapter 1 ELO’s Describe the basic functions of living organisms. A. Responsiveness – organisms respond to changes in their immediate environment (long term changes is adaptability) B. Growth – over a lifetime, organisms grow larger through an increase in size or number of cells. Differentiation is when cells have specialized functions C. Reproduction – Organisms reproduce, creating subsequent generations of similar organisms D. Movement – Organisms are capable of movement