Why Are Lipids and Proteins Free to Move Laterally in Membranes

question 54

Multiple Choice

Why are lipids and proteins free to move laterally in membranes?

• A)The interior of the membrane is filled with liquid water.
• B)There are no covalent bonds between lipid and protein in the membrane.
• C)Hydrophilic portions of the lipids are in the interior of the membrane.
• D)There are only weak hydrophobic interactions in the interior of the membrane.
• E)Molecules such as cellulose can pull them in various directions.

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Definitions:

Neural Tube

is an embryonic structure that eventually develops into the brain and spinal cord during prenatal development.

Spina Bifida

A neural tube defect that results in spinal nerves growing outside of the vertebrae, often resulting in paralysis and developmental disability.

Anencephaly

A neural tube defect that results in the failure of all or part of the brain to develop, resulting in death prior to or shortly after birth.

Sciatica

A condition characterized by pain going down the leg from the lower back, often due to irritation of the sciatic nerve.