fill-in-the-blank
Facilitated diffusion requires a ___________ to help molecules cross the cell membrane but does not require energy.
transport protein
T/F: Protein pumps are an example of passive transport.
False; active
a. Eukaryotic cells have membrane-bound organelles
b. Prokaryotic cells have a nucleus
c. Both have DNA
b. Prokaryotic cells have a nucleus
Which type of cell lacks membrane-bound organelles?
A. Fungal
B. Plant
C. Animal
D. Bacteria
D. Bacteria
A type of proteins that are embedded in the phospholipid bilayer of the cell membrane.
peripheral proteins
Osmosis involves water moving across the cell membrane through special transport proteins called _________.
aquaporins
T/F: Prokaryotic cells are more complex than eukaryotic cells.
a. Hydrophilic substances are attracted to water
b. Hydrophobic substances easily pass through water
c. Hydrophobic substances repel water
b. Hydrophobic substances easily pass through water
What does “selectively permeable” mean?
A. The membrane lets all substances pass
B. The membrane blocks all substances
C. The membrane allows some substances to pass but not others
D. The membrane only allows water through
C. The membrane allows some substances to pass but not others
The passive movement of molecules from an area of higher concentration to an area of lower concentration
diffusion
Active transport requires ________ to move things into or out of the cell.
ATP/energy
T/F: Polysaccharides are the component of the cell membrane that helps with cell-to-cell communication through glycol-couplings
True
a. Simple diffusion is passive
b. Facilitated diffusion uses proteins
c. Facilitated diffusion requires ATP
c. Facilitated diffusion requires ATP
A. All living things are made of one or more cells
B. Cells are the basic unit of structure and function in living things
C. All cells come from pre-existing cells
D. All cells contain a nucleus
D. All cells contain a nucleus
A cell transport process where ATP is used to move molecules against their concentration gradient through the cell membrane
protein pump
Bulk transport is what cells use to get things into and out of the cell that are too __________ to use a protein pump or passive transport.
large
T/F: Endocytosis uses vesicles to bring materials into the cell.
True
a. Endocytosis uses vesicles to bring materials into the cell
b. Exocytosis uses vesicles to remove materials from the cell
c. Neither uses ATP
c. Neither uses ATP
What is the main difference between facilitated diffusion and simple diffusion?
A. Facilitated diffusion requires ATP
B. Simple diffusion uses vesicles
C. Facilitated diffusion uses transport proteins
D. Simple diffusion moves against the concentration gradient
C. Facilitated diffusion uses transport proteins
A form of cell transport where particles that are too big to use a transport protein are taken out of the cell
exocytosis