Part 2: Report and Reflection
Purpose
The purpose of this experiment was to enable me to gain a comprehensive understanding of the role and mechanisms of the plasma membrane in controlling cellular transport. By exploring the fluid mosaic model, I delineated the structure of the plasma membrane and understood how its specific composition allows for selective permeability facilitating the influx and efflux of various molecules. I also understood the role of transporter proteins in the active and passive transportation of different molecules. Additionally, I explored the various modes of active transport, as well as the distinct classes of ion channels and carrier molecules and comprehended how they ensure only the right molecules enter the cell
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B Nuclear pores Gateways within the nuclear membrane that allow for the selective exchange of molecules such as RNA and proteins between the nucleus and the cytoplasm.
C Nucleoli genetic material Site for ribosomal RNA (rRNA)production.
D Cytoplasm Fluid matrix that houses the cell organelles and serves as the site for numerous cellular processes including glycolysis and protein folding.
E Nuclear lamina Protein meshwork lining the inner nuclear membrane providing structural support to the nucleus.
F Cell membrane Selectively permeable regulating the passage of substances in and out of the cell and maintaining cellular homeostasis.
G Mitochondrion Energy production in cellular respiration.
H Cytoskeleton Provides mechanical resistance to deformation, enables cell movement, and intracellular transport.
I Lysosome Contains digestive enzymes that break down waste materials, cellular debris, and foreign invaders like some bacteria.
3.What is tonicity and how does it affect the condition of the cell? (1
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It describes how an extracellular solution can change the volume of a cell by affecting osmosis. If the extracellular fluid has higher osmolarity than the cell's cytoplasm, the cell will lose water and shrink (hypertonic solution). If the extracellular fluid has lower osmolarity, water will enter the cell, which may cause it to swell and even burst (hypotonic solution). An isotonic solution has the same osmolarity as the cell, so there is no net movement of water.
4.When is a hypotonic IV solution administered to patients? Why? (1 point)
A hypotonic IV solution is administered to patients who have dehydrated cells. It contains fewer solutes than the cells in the body, causing water to move into the cells by osmosis. This helps to rehydrate the cells and restore their function.
5.Reflection: Reflect on at least 2 key concepts you have learned from this simulation. How would you relate it to the physiological functions of the