This research will begin with the statement that all living organisms including plants and animals have evolved from the simplest unicellular organisms like the planktons and amoebae to the much more complex living forms with intricate cellular differentiation and organization…
Download file to see previous pages...
The researcher states that even the simplest unicellular protozoan needs to communicate with the external environment for survival because it needs to ingest food, eliminate waste products and toxins of metabolism and exchange gases through respiratory mechanisms. This communication is further developed in a more intricate manner in the multicellular organisms where exchanges take place within and between the cells in carrying out their assigned physiological functions. All cells are bound on the outside by a limiting membrane akin to a boundary wall which separates and protects the cellular components from the external environment. This membrane is known as the cell wall and the plasma membrane in plants and animals respectively. This membrane is a specialized component which selectively permits passage of water and other components across it either inward or outward depending upon the gradient of the fluid environment and internal contents or due to selectivity for particular molecules through specialized pores or channels. Two of the processes by which such exchanges take place are known as diffusion and osmosis. Diffusion is simply the movement of molecules from a region of higher concentration to a lower concentration (intranet.landmark.edu). Diffusion occurs within a single compartment or environment where molecules move from a region of higher concentration to a lower concentration until equilibrium is reached. Such diffusive activity can take place inside a single cell. Osmosis too is also a movement of components within a solution either from a higher gradient to a lower one or selectively under active transport systems controlled by cellular physiology, but this diffusion occurs across a semi-permeable membrane such as the plant cell wall or the animal plasma membrane. The plant or the animal cell walls are selectively permeable for certain molecules and do not allow other molecules to pass through them.
...Download file to see next pagesRead More
Cite this document
(“Potato Osmosis Assignment Example | Topics and Well Written Essays - 2500 words”, n.d.)
Retrieved de https://studentshare.org/biology/1728122-potato-osmosis-lab-report
(Potato Osmosis Assignment Example | Topics and Well Written Essays - 2500 Words)
“Potato Osmosis Assignment Example | Topics and Well Written Essays - 2500 Words”, n.d. https://studentshare.org/biology/1728122-potato-osmosis-lab-report.
One problem with the experiment was that only a single egg was used, so the effects of each individual liquid could not clearly be seen. For example, immersing in corn syrup appeared to cause water to leave the cell and can be seen through the decrease in size and mass, however, the amount of liquid only changed by 2ml.
(Encyclopaedia Britannica :2005 Deluxe Edition .CD-ROM).
Place 4 potato slices -each a quarter of an inch in thickness - in 4 water bowls in which 1,2,3 and 4 spoons of sugar have been dissolved respectively. After leaving the bowls undisturbed for a day we notice that the potato slices in the bowls are shrunken and that the potato slice in the beaker containing water with 4 teaspoons of sugar dissolved in it has shrunk the most.
How does osmosis take place A plant or vegetable is full of cells that contain water. Each of these tiny cells is surrounded by a membrane like our skin. The membrane protects the cell by keeping its parts inside and keeping other things outside. This membrane can stop many things from entering the cell, but it cannot keep water out.
This experiment aims to demonstrate how factors such as temperature affect the rate of diffusion and how different solute concentrations affect the morphology of the red blood cells and how this would translate to clinical practice. The effect of temperature was determined
This paper gives information that market penetration happens when a company tries to market more of its existing products in the same market it operates. For this, a company can use many techniques. The company can try to convert occasional buyers into regular buyers and in turn, try to convert regular buyers into big purchasers.
In this experiment, this condition was replicated using unshelled eggs as the cell and sucrose solutions as the extracellular fluid. It was observed that there are concentrations of sucrose which causes uptake or
They constitute 60% of the body’s white blood cells and are granulated giving a purplish tinge. “The neutrophils are fine, light blue etoplasmic granules; 3-5 lobed nucleus.”(Alcamo, & Krumhardt, 2004) The reason for labelling Ozzy as a neutrophils is
After a few minutes, when the potato had boiled a bit, I took it out of the pan and started peeling off the skin. This exposed the yellow part of the potato.
Once this was done, I set it down for a few
According to the research findings, diffusion plays a vital part in biological processes that help keep organisms alive. This is because diffusion is closely related to the concept of selective permeability, a process wherein cell membranes allow some substances in while keeping other substances out.
1 Pages(250 words)Essay
GOT A TRICKY QUESTION? RECEIVE AN ANSWER FROM STUDENTS LIKE YOU!
Let us find you another Assignment on topic Potato Osmosis for FREE!