The Cell Flashcards
_______: which contains cytosol and organelles.
_______: which contains most of the cells genes, located on chromosomes.
______: which is composed of lipid bilayer and membrane proteins.
1) cytoplasm
2) Nucleus
3) plasma membrane
Define what a cell is:
Living structural and functional units enclosed by a membrane.
What process moves a substance down the concentration gradient using its own kinetic energy?
Passive transport
Goes against concentration gradient and uses ATP and the energy stored is NA and H.
Active transport.
What is diffusion?
A passive process when the molecules move from high to low concentration until equilibrium is reached.
What is osmosis?
Movement of water through a selectively permeable membrane from a high to low concentration.
Tonicity is what?
A cell changing shape because of water.
In a hypotonic solution the cell ruptures and is called ?
Lysis
Hypertonic solutions cause cells to shrink and that is called?
Crenation