Cell Membranes Flashcards

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1
Q

The pH inside a cell is usually
(higher/lower) that the pH outside the cell.

A

Lower (pH)

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2
Q

Increased numbers of saturated phospholipids…. (more than one answer may apply)

a. increases membrane packing

b. decreases membrane packing

c. reduces viscosity

d. increases viscosity

A

a. increases membrane packing and d. increases viscosity

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3
Q

When the temperature increases, membranes will want to become more
fluid
(fluid/viscous) but are regulated by the amount of
cholesterol
in the membrane.

A

More fluid and regulated by cholesterol

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4
Q

Phospholipid tails are made from which two elements?

A

Carbon and hydrogen make up this lipid component!

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5
Q

Which of these has a net negative charge?

a. Phosphatidylcholine

b. Phosphatidylserine

c. Phosphatidylethanolamine

A

b. Phosphatidylserine

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6
Q

Which group on cholesterol aligns with the phospholipid heads?

a. CH chain

b. Benzene ring

c. OH

d. NH3

A

c. OH (group within cholesterol structure)

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