3A intro to plasma membrain

Question 1

phospholipid bilayer

Answer 1

a double
layer of amphiphilic molecules that
forms the primary component of
cell membranes

Question 2

phosphate head

Answer 2

the hydrophilic
subunit of a phospholipid

Question 3

fatty acid tail

Answer 3

the hydrophobic
lipid subunit of a phospholipid

Question 4

hydrophilic

Answer 4

having a tendency
to be attracted to and dissolve
in water

Question 5

polar

Answer 5

describes a molecule with
both a positive end and negative
end. These tend to be hydrophilic

Question 6

hydrophobic

Answer 6

having a tendency
to repel and be insoluble in water

Question 7

nonpolar

Answer 7

describes a molecule
without a clearly positive or
negative end. These tend to
be hydrophobic

Question 8

amphipathic

Answer 8

describes molecules
with both hydrophilic and
hydrophobic components

Question 9

carbohydrate

Answer 9

a class of
biomacromolecule made from
monosaccharide monomers
consisting of carbon, hydrogen,
and oxygen. Also known as
saccharides or sugars

Question 10

cholesterol

Answer 10

a steroid-alcohol
that regulates fluidity in
plasma membranes

Question 11

integral protein

Answer 11

a protein that
is permanently secured to the
plasma membrane

Question 12

transmembrane protein

Answer 12

an
integral protein that spans the
entire plasma membrane

Question 13

peripheral protein

Answer 13

a protein
that is temporarily attached to
the plasma membrane

Question 14

cytoskeleton

Answer 14

the microscopic
web of protein filaments in the
cytoplasm. It provides structure
and support, and transports
products around the cell

Question 15

glycolipid

Answer 15

a phospholipid bound
to a carbohydrate

Question 16

glycoprotein

Answer 16

a protein bound to
a carbohydrate

Question 17

oxygen has

Answer 17

2 oxygen atoms

Question 18

water mulicules have

Answer 18

one oxygen two hyfrigons

Question 19

carbon dioxidde has

Answer 19

one carbon two oxygen