3365241546

Mehmet Emre SUMER

Koc University-Molecular Biology and Genetics 7 MAY 2010

MBGE 102-EXPERIMENT6

BASICS OFMEMBRANĘ TRANSPORT

ABSTRACT:

In this experiment our aim was seeing effects of different Solutions on the red onion cells and calculating water potential of potato. To provide plasmolysis for onion cells the dilutions that have different concentration are dropped to red onion epidermis cells and the effects of dilutions are observed ender the microscope. Additionally, to determine the water potential of potatoes, smali pieces of potatoes are put into plastic cubs that have different sucrose concentration and they are stood over night. After that, the mass of each group of potato cores is calculatcd.

INTRODUCTION:

Celi membranes is barier to enterance of most molecules, but not all. evolution of a celi membranę which can give permision some materials to pass while they are constraining the movement of other molecules was a major step in the evolution of the celi. Celi membranes are differentially permeable barriers separating the inner cellular environment from the outer cellular environment.

Figurę 1: Basic schema of membranę transports (1)

►ort