Name:
OL Lab 3: Cell Membrane and Transport: Learn how transporters keep cells
healthy
Learning Objectives:
• Describe the plasma membrane structure using the fluid mosaic model
• Recognize the relative permeability of lipid bilayers to different
classes of molecule
• Compare active and passive transport of molecules
• Identify the 3 modes of active transport and the different classes of
ion channel and carrier molecules
• Relate the expression of specific transport proteins to the cell’s role
Introduction:
A variety of substances move in and out of the cells through the plasma
membrane. Membrane transport is vital for cellular activities. The cells need
to be healthy for the body to work efficiently. From filtration in the kidneys to
the contraction of muscles during exercise, membrane transport contributes
to many processes. In this simulation, you will learn about the structure and
function of the cell membrane, and discover why membrane transporters are
vital for healthy cells and the function of organ systems.
In the first part of your mission, you will be introduced to the concepts of
selective permeability and the fluid mosaic models of the plasma membrane.
You will explore why cells need specialized transporter proteins to transport
cargo molecules across their membranes. While some molecules can diffuse
across the cell membrane, most molecules require a transporter protein to
enter or leave the cell.
In the later part of the simulation, you will set up a fluorescence microscopy
experiment to learn how the channels, carriers, and pumps that exist in the
membrane ensures that only the right molecules enter under the right
conditions and help not only to keep the cell healthy but also help organ
systems to function.
Part 1: Complete Labster Cell Membrane and Transport