End of test 1 qt 2 materail Flashcards
what is an isotonic solution?
concentration of solute in the solution= the concentration of dissolved materials inside the cell
what is the goal of an isotonic solution?
equality
what is a hypertonic solution?
concentration of solute outside the cell is higher then the concentration of dissolved materials inside the cell
in which direction is a hypertonic solution moving?
out
what happens to the cell in a hypertonic solution?
the pressure decreases and the cell shrivels
what is plasmolysis?
when an animal cell shrivels up (death of a cytoplasm)
What is another name for plant cell pressure?
turgor pressure
what is a hypotonic solution?
concentration of solute is lower in the solution outside the cell than the concentration of dissolved materials inside the cell
in which direction does the water move in a hypotonic solution ?
in
what happens to the cell that is in a hypotonic solution?
the pressure increases and the cell bursts
what is active transport?
movement of molecules from a low concentration to a high concentration
whats another name for active transport?
solute pumping
What happens during active transport?
nerve cells with sodium (out)- potassium (in) pump
What is bulk transport?
movement of large molecules across the membrane
what is endocytosis?
movement of large molecules into the cell
What is pinocytosis?
“cell dinking”; taking in liquid and forming a vacuole
What is phagocytosis?
“cell eating”; taking in a solid particle dissolved by digestive enzymes of a lysosome
what is exocytosis?
movement of large molecules out of the cell
What is cell culture?
cells growing on glass
What is the cell food in cell culture called?
medium
What is “medium”?
horse blood/cerum
What is cell fraction?
separation of cell parts by high velocity (20,000x) using a centrifuge
what is the machine used in cell fraction?
centrifuge
what is autoradiography?
injecting radioactive isotopes into cells/ organisms as tracers
