Cell Membrane Structure Review

Phospholipids create bi-layers because of their __________________ properties.

• Hydrophillic

• Hydrophobic

• Amphipathic

• Polar

The part of a phospholipid that is hydrophobic (non-polar) would be:

• hydrocarbon tails

• glycerol

• phosphate head

• the whole molecule

The protein labeled H should be considered

• peripheral

• transmembrane

• integral

• all are correct

What function does the protein labeled J most likely have?

• Recognition

• Channel

• Receptor

• Adhesion

B is referring to what type of protein?

• Enzymatic

• Pump

• Receptor

• Recognition

Letter I is referring to what type of molecule?

• phosphate

• hydrocarbon

• glycerol

• cholesterol

What is the most likely function of the protein labeled H?

• Adhesion

• Channel

• Recognition

• Enzymatic

Cholesterol is important in maintaining what in animal cells?

• Membrane Fluidity

• Membrane Shape

• Membrane Structure

• All are correct

An increase in unsaturated fats in the cell membrane would have what effect on its fluidity?

• would decrease fluidity

• would increase fluidity

• would have no effect on fluidity

• It depends on the amount of saturated fat present

Gorter and Grendel's work on cell membranes was essential, because they discovered it was:

• made up of a bilayer

• made up of a mixture of lipid and protein

• made up of phospholipids

• Is both hydrophobic and hydrophillid