Experiment on the Functions of Passive Transport in Red Blood Cells
explanatory Essay
1772 words
Introduction
Because of cell's composition, the plasma membrane has to be selective to its materials that passes through it. In other words, the plasma membrane is semi-permeable that it allows nutrients to enter the cell but keeps out undesirable substances. This property allows the cell to segregate its inner cytoplasm from the external environment. There are two different ways to pass though this membrane: active and passive transport. Active and passive transport are both biological process that move oxygen, water and nutrients into cells and remove waste products; however, these two processes happen in a different mechanism.
First, active transport requires chemical energy because it is the movement of biochemical from areas of lower concentration to areas of higher concentration. Therefore this process uses ATP to pump molecules against the concentration gradient. Active transport is one of important biochemical process because amino acids, complex sugars and macromolecules need to enter the eukaryotic cells for their survival. These molecules are very essential for living, but these items either cannot diffuse or diffuse too slowly without active transport process. Sodium and potassium across though cell membrane by protein pump, and it is one of great example of active transport.
On the other hand, passive transport moves in the natural way. Biochemical moves from areas of high concentration to areas of low concentration, therefore, it does not require energy. Diffusion, facilitated diffusion and osmosis are passive transport. Because the cell membrane is compose of phospholipids, anything soluble in lipids, small monosaccharide, water, oxygen, carbon dioxide, and hormones can across this membrane without ATP. These mol...
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...d, 2001) From this process, it shows that when osmosis function does not work properly in human body, the person cannot sustain his or hers life normally.
Moreover, the critical situation could happen without any failure of biological function when a person drinks salt water. The human body can handle a little bit, but if somebody consumes nothing but salt water for few days, as in the case of being stranded on the proverbial desert island, the osmotic pressure would begin drawing water from other parts of the body. Since a human body ranges from 60% water in an adult male, and to 85% in a baby, water is the essential ingredient in the human body. If a person continued to ingest salt water, he or she would eventually experience dehydration and die. Therefore, osmosis is very important and basic function for body even though this process seems very simple and easy.
In this essay, the author
- Explains that the plasma membrane is semi-permeable that it allows nutrients to enter the cell but keeps out undesirable substances. there are two different ways to pass through this membrane: active and passive transport.
- Explains that active transport requires chemical energy and uses atp to pump molecules against the concentration gradient.
- Explains that biochemical moves from high concentration to low concentration areas, thus, it does not require energy. diffusion, facilitated diffusion, and osmosis are passive transport.
- Explains that osmosis is a special kind of diffusion in which water moves through selectively permeable membrane. it allows diffusion for only certain solutes.
- Describes how red blood cells were used in three different concentrations of solutions to see how osmosis would occur.
- Explains the purpose of the lab, which is to observe the acts of passive transport: osmosis in red blood cells.
- Describes how sheep blood samples were placed on a microscope slide, followed by saline water, and blood cells were separated. the slides were disposed in the biohazard box.
- Explains that the red blood cells in three different concentration solutions had different results. isotonic solution dropped in the rbcs had no change of their shape or movement.
- Explains the effect of an extracellular solution on the osmotic movement of water into or out of the cell.
- Explains that the semi-permeable cell membrane regulates the flow of liquids and dissolved solids into and out of the cell.
- Opines that the data collected in this lab did not contain any errors. dropping the solution was the hardest part because it was difficult to be a right amount for observation.
- Explains the clinical implications of osmosis, especially in the case of the storage of vitally important red blood cells.
- Explains that the plasma solution used by most hospitals for storing red blood cells is slightly hypertonic relative to the cells to prevent them from drawing in water and bursting.
- Explains that dialysis is a vital process that influenced by osmosis, which is critical to the survival of kidney diseases.
- Explains that osmosis is important and basic function for body even though it seems simple and easy.
Related
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- Explains the structure of the plasma membrane and the process of active and passive transport through the membrane.
- Explains that active transport requires the use of energy because substances are moved against/up a concentration gradient, while passive transport does not require cellular energy.
- Explains the process of osmosis lab2 in terms of concentration gradient, diffusion, swelling, water travels from the jar into the egg until both areas have the same concentration.
- Explains how a blood cell is placed in hypotonic (very dilute) nacl solution, where sodium ions may leave, and water enters the cell.
- Explains that when a red blood cell is placed in hypertonic (very concentrated) nacl sodium ions may enter the cell, but are pumped out by the na/k-atpase pump.
- Explains that when a red blood cell is placed in an isotonic solution of nacl, the concentration of solutes is the same both inside and outside of the cell.
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- Explains that diffusion is the movement of solutes down their concentration gradient, toward a lesser concentration, in order to pass the membrane, such as the lipid bilayer of the plasma membrane.
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- Explains that the cell membrane uses active transport and passive transport to move molecules around the world.
- Describes the fluid mosaic model of the cell membrane, which consists of phospholipids, cholesterol, and proteins. peripheral proteins have weaker connections to the membrane.
- Explains that diffusion is when a molecule moves from high to low concentration, and equilibrium is reached when the concentration gradient reaches zero.
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- Explains that active transport requires energy to move. molecules use protein pumps, such as sodium-potassium pump, which transports sodium and potassium molecules across the membrane.
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- Describes how the eggs were removed from the second 24-hour soaking and the vinegar poured off. they were rinsed in tap water and culture dish thoroughly cleaned.
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- Explains that every 10 minutes, the masses of the eggs were again measured using the protocol outlined in step 1.
- Explains that the percent sucrose solution that isotonic to an egg’s interior may be between -10% and -15% since the average masses of the eggs did not change beyond 0.15% over a 30 minute time period.
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- Analyzes marc's dehydration because he has less than the required amount of water for his body to complete the processes necessary to maintain its health. the sweating process causes the loss of more water than solutes.
- Explains that marc's dehydration would make his body complete the process of osmosis. the body cells would be the area of high concentration because they have more unbound water molecules.
- Explains that the paramedics would treat marc with half normal saline, the solution with the lowest percentage of solutes, to increase his concentration of water and return his cells to their normal size.
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