Chapter 5: Lesson 3 Flashcards
___ transport requires energy, ___ transport does not require
active, passive
How does active and passive transport differ in terms of concentration gradient changes?
Active transport moves substances from an area of lower concentration towards an area of higher concentration, passive transport moves substances from an area of higher concentration towards an area of lower concentration
The random movement of particles to fill the available space down a concentration gradient is known as ____
diffusion
The movement of water molecules down a concentration gradient and across a semi selectively permeable membrane is known as ____
osmosis
The movement of substances down a concentration gradient and through a transport protein is called _____
facilitated diffusion
Since polar/charged substances don’t easily pass through a cell membrane due to selective permeability, what do they require to pass through?
Facilitated diffusion
Who discovered aquaporins in 2003?
Peter Agre
A type of endocytosis where the engulfment of a particle by the cell wrapping cell membrane around it, forming a vacuole is known as _____
phagocytosis
A type of endocytosis that uses membrane receptors for specific solutes is known as _____
Receptor-mediated endoyctosis
A form of endocytosis involving the cell taking in fluids in small vesicles is known as ____
pinocytosis
A form of active transport where there is excretion (removal of cellular waste) and secretion (export of cellular products) is known as _____
exocytosis
A form of passive transport where substances are brought into the cell is known as _____
endocytosis
Cell shrivel in plants is known as ___
plasmolysis
Cell shrivel in animals is known as ____
crenation
Water’s diffusion through a membrane’s interior is ___ (slow/fast)
Slow
