5 Questions
What is specificity in the context of transporter proteins?
Specificity refers to the ability of a transporter to move one molecule or a closely related group of molecules.
Give an example of specificity in transporter proteins.
An example of specificity is the GLUT transporters, which move naturally occurring 6 carbon sugars (glucose, mannose, galactose, and fructose) but will not move the disaccharide maltose.
What is competition in transporter proteins?
Competition occurs when a carrier can move several members of a related group of substances, but these substances compete with one another.
How does saturation affect the rate of transport?
The rate of transport depends on the concentration and number of transporters. Transport normally increases with increasing concentration until saturation occurs.
What factors determine the rate of transport?
The rate of transport is determined by the concentration of the substance being transported and the number of available transporters.
Test your knowledge on cell membrane transport with this quiz. Topics covered include protein mediated transport, vesicular transport, epithelial transport, and the resting membrane potential. Explore concepts such as specificity, competition, and saturation in both active and passive carrier mediated transport.
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