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18 Sep 2018

If a hormone was known to look like a miniature versions of the fatty acid tails of a phospholipid. Would you hypothesize that this hormone:

is most likely received at the cell surface because it's hydrophobic nature does not allow it to cross the plasma membrane

is most likely received at the cell surface because it's hydrophilic nature does not allow it to cross the plasma membrane

is most likely received inside the cell because it's hydrophobic nature allows the hormone to cross the plasma membrane

is most likely received inside the cell because it's hydrophilic nature allows the hormone to cross the plasma membrane

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Casey DurganLv2

20 Sep 2018

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A set of erythrocytes is placed in a beaker of 0.9% NaCl.Nothing appears to happen to the cells. Why?

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large polar molecules

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burgundyelk45

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a. Cholesterol in LDL particles easily inserts into lipidbilayers

b. Cholesterol id largely insoluble in aqueous solutions

c. Cholesterol is synthesized within LDL particles

d. LDL particles can form lipid rafts in the lipid bilayer

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a. Bound to the hydrophilic domain of apolipoprotein

b. In the lipid bilayer that surrounds LDL particles

c. On the surface interacting with the aqueous environment aswell as interacting with the hydrophobic core of the particle

d. Within the hydrophobic core of the particle

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a. Amphipathic proteins

b. Cell surface proteins

c. Membrane associated protein

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a. a cholesterol binding protein

b. a glycolipid

c. a phospholipid

d. trans membrane protein

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a. increased glycolipid synthesis

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