Which of These Statements About the Composition of Biological Membranes

question 12

Multiple Choice

Which of these statements about the composition of biological membranes is false?

• A)In a given eukaryotic cell type (e.g. ,a hepatocyte),all intracellular membranes have essentially the same complement of lipids and proteins.
• B)The carbohydrate found in membranes is virtually all part of either glycolipids or glycoproteins.
• C)The plasma membranes of the cells of vertebrate animals contain more cholesterol than the mitochondrial membranes.
• D)The ratio of lipid to protein varies widely among cell types in a single organism.
• E)Triacylglycerols are not commonly found in membranes.

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Definitions:

Luxation

The dislocation or displacement of a bone from its joint, often causing pain and immobility.

Fracture

A break in bone or cartilage, which can range in severity from a small crack to a complete break.

Circumduction

A type of joint movement where the distal end of a bone moves in a circle while the proximal end remains in one position.

Pronation

A rotational movement of the forearm that turns the palm downward or backward.