Formal report

Formal report - Biology 2107/07 Membrane Function Membrane Transport Mechanisms Abstract This experiment was conducted to demonstrate how

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology 2107/07 Membrane Function: Membrane Transport Mechanisms
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Abstract This experiment was conducted to demonstrate how semi-permeable membranes play a vital role in our cells to ensure they contain only the proper molecules and amounts of those molecules. A test was ran using three dialysis tubes filled with various concentrations of sucrose solutions to observe the rates of osmosis for each knowing that only specific molecules would be able to diffuse through the tubing while others would be unable to penetrate through the tubing. From observing these pre-determined differences in the same solution of tap water, it was shown that those with a higher concentration gradient from that of the solution would display a higher rate of osmosis. This experiment was chosen due to its ability to demonstrate one of the many highly important mechanisms a cell uses to control its overall health and environment. Without this ability to passive transport all cells would ultimately die being unable to acquire or dismiss the proper molecules. Introduction Transport mechanisms are very important in a cell’s function and survival. Without such processes harmful chemicals and molecules would enter that may kill or damage a cell rendering it useless. To avoid such situations, a semi-permeable membrane develops to protect and traffic the molecules which may enter and exit (Silberberg 520). With many mechanisms to aid in a cell’s survival and ability to perform vital functions, the phospholipid bilayer membrane in cells is the key to its continued role in whichever environment it may inhabit. With such membranes present, this ensures that molecules that are too big to fit through the pores in membrane do not enter. While there are other ways for certain molecules to pass through the membrane, even
Background image of page 2
water may have a difficult time penetrating through the phospholipid bilayer and must be transported through specific special sites in the cells membrane, called aquaporins (Debnam 190- 191). There are active transports that require the use of energy in order to transport molecules a
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/11/2008 for the course BIOL 2107 taught by Professor Brookshire during the Spring '08 term at Kennesaw.

Page1 / 7

Formal report - Biology 2107/07 Membrane Function Membrane Transport Mechanisms Abstract This experiment was conducted to demonstrate how

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online