Chapter 11 Vocab

Question 1

the portion of a protein that crosses the membrane

Answer 1

membrane domain

Question 2

proteins associated with the lipid bilayer

Answer 2

membrane protein

Question 3

a fatty acid in which all carbons are connected by single bonds

Answer 3

saturated

Question 4

molecules that constitute the inner bilayer of biological membranes, having a polar, hydrophilic head and a non polar, hydrophobic tail

Answer 4

phospholipid

Question 5

a molecule that has both a hydrophilic region and a hydrophobic region

Answer 5

amphipathic

Question 6

a fatty acid possessing one of more double bonds between the carbons in the hydrocarbon tail

Answer 6

unsaturated

Question 7

a steroid that forms an essential component of animal cell membranes

Answer 7

cholesterol

Question 8

the membrane at the boundary of every cell that acts as a selective barrier, thereby regulating the cell’s chemical composition

Answer 8

plasma membrane

Question 9

how phospholipid molecules are arrange in biological membranes

Answer 9

lipid bilayer

Question 10

amphipathic molecules used to solubilize hydrophobic molecules

Answer 10

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