WorksheetsThe fundamental unit of Life: Cell membrane
Total questions: 20
Worksheet time: 11mins
Basic unit of all forms of life
Cell
Nucleus
Prokaryote
Eukaryote
The cell membrane is mostly made of what?
Membrane-spanning Proteins
Surface Proteins
Phospholipids
Carbohydrates
What are the two parts of a phospholipid?
head
enzyme
tail
hormone
What forms due to a difference in concentration of particles on opposite sides of the membrane?
concentration flow
concentration gradient
equilibrium
diffusion gradient
Particles move across the membrane ___________ attempting to reach equilibrium.
orderly
slowly
randomly
in a single file line
The phospholipid head is _____________ & _____________
Hydrophilic
Hydrophobic
Polar (+)
Uncharged
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
This image is an example of a phospholipid. Which part of a phospholipid is HYDROPHOBIC?
the phosphate "head"
the lipid "tails"
Where can PROTEINS be found when part of a plasma membrane?
On the outside of the membrane
On the inside of the membrane
Embedded part of the way into the membrane
Embedded the whole way through the membrane
All of the above
What is the "big idea" of the fluid mosaic model of plasma membranes?
the plasma membrane creates a specialized FLUID that looks like a MOSAIC.
the plasma membrane is a MOSAIC.
the fluid mosaic model is NOT related to the plasma membrane.
a plasma membrane is a MOSAIC of components that move FREELY and FLUIDLY.
