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WorksheetsCell Membrane and Transport
Total questions: 31
Worksheet time: 17mins
Phospholipids
Cholesterol
Cholesterol is labeled as
D
A
Which of the following forms the channels and pumps in the phospholipid bilayer?
Part of the plasma membrane responsible for cell identification...
___________ regulates the fluidity of the cell membrane.
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.
What is it called when large molecules move across the cell membrane from an area of high concentration to an area of low concentration through a protein channel?
Diffusion
Osmosis
Active Transport
Facilitated Diffusion
Hydrophobic region of the membrane
A
B
C
D
Transport of water and other molecules across a cell membrane allows cells to maintain stable internal conditions in an ever-changing environment. This stable internal condition is called _____.
homeostasis
energy transfer
osmosis
carrying capacity
The movement of particles from an area of high concentration to an area of low concentration
active transport
osmosis
diffusion
random movement
When material passes into and out of a cell at equal rates and there is no difference in concentration between the inside and outside of the cell, the cell is in a state of...
equilibrium
diffusion
osmosis
active transport
If a cell is placed in an environment with more oxygen OUTSIDE the cell than inside, oxygen will diffuse ..
into the cell
out of the cell
no diffusion will happen
only with the help of ATP
The movement of materials that requires energy is called...
active transport
passive transport
massive transport
facilitated diffusion
Which type or types of cell transport uses protien channels that help large molecules move through the cell membrane?
What three biomolecules make up the cell membrane?
lipids, DNA, proteins
The process in the model is __________ and it __________.
Facilitated transport; needs energy
Endocytosis; needs energy
Exocytosis; does not need energy
Cytoplasmic Streaming; needs a protein
In a lipid bilayer, ___________ fatty acid tails face each other within the bilayer and form a region that excludes water.
Hypotonic
Hypertonic
Hydrophilic
Hydrophobic
The arrow is pointing to the
Phospholipid hydrophilic head
Phospholipid hydrophobic head
Phospholipid hydrophilic tail
Phospholipid hydrophobic tail
An increase in temperature does what to diffusion?
Speeds it up
Slows it down
Stops it
No effect
How long does diffusion last?
Until the concentration of particles in the system is equal
Until a region in the system has a greater concentration of particles than the other
Until the particles disappear from the system
The movement of particles is __________, resulting in the particles being spread throughout the container
Structured
In a straight line
Random
In curved, way motions
Endocytosis and exocytosis both use energy to engulf substances with the cell membrane. However, _____________ brings substances into the cell, while ____________ takes substances out of the cell.
endocytosis, exocytosis
exocytosis, endocytosis
endocytosis, endocytosis
exocytosis, exocytosis
Which type of molecule will diffuse at a faster rate?
low mass, low temperature
high mass, low temperature
low mass, high temperature
high mass, high temperature
