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WorksheetsCHAPTER 3: PLASMA MEMBRANE STRUCTURE
Total questions: 20
Worksheet time: 12mins
Type of protein
carrier protein
channel protein
phospholipid bilayer consists of
pore protein and carrier protein
glycoprotein and carrier protein
two layers of phospholipid molecules
glycogen and proteins
Name this structure
cell wall
phospholipid bilayer
lipid layer
mosaic
A major function of glycoproteins and glycolipids in the membane is to
glue cells together to form tissues
allow cells to identify each other
attach membrane to cytoskeleton
help retain shape
Which is NOT a function of the membrane?
it forms a selective barrier
it has receptors for chemical messages
it is the control center of the cell
it is involved in self recognition
Identify a peripheral protein
structure a
strucure b
structure g
structure h
Which part repels water?
hydrophilic head
hydrophobic tail
All processes taking place across the plasma membrane do not require the breakdown of ATP molecules except:
simple diffusion
osmosis
active transport
facilitated diffusion
All processes taking place across the plasma membrane do not require the breakdown of ATP molecules except:
simple diffusion
osmosis
active transport
facilitated diffusion
Name structure P
(a)
What does "hydrophobic" mean?
water loving, associates with water
water fearing, does not associate with water
a world war II submarine
an example would be solutes like sugar or salt
Define plasma membrane
lipid that helps minimize effects of temperature
only on the outer surface of the plasma membrane and are attached to proteins or lipids; form distinctive cellular markers
flexible boundary of a cell that separates a cell from its surroundings
may extend partway into the plasma membrane, cross the membrane entirely, or be loosely attached to its inside or outside face
Which of these are not embedded in the lipid bilayer at all?
integral proteins
glycoproteins
peripheral proteins
transmembrane proteins
Membrane phospholipids
have hydrophobic heads that face the center of the membrane and are shielded from water
have hydrophilic tails that face outward
remain fluid because they are tightly packed
none of these
Identify cholesterol molecule
structure a
structure b
structure h
structure i
They are located entirely outside the lipid bilayer.
Integral proteins
Peripheral membrane proteins
Lipid-anchored membrane proteins
This image is an example of a phospholipid. Which part of a phospholipid is HYDROPHOBIC?
the phosphate "head"
the lipid "tails"
Which type of biological macromolecule is the main component of the plasma membrane?
carbohydrate
lipid
protein
nucleic acid
What kinds of molecules pass through a cell membrane most easily?
ionic
small and hydrophobic
large polar
large and hydrophobic
Which of the following is the characteristic of plasma membrane?
Not permeable
Fully permeable
Selectively permeable
Less permeable
