VOCAB Chapter 7- TRANSPORT

NAME ______________________________

VOCAB Chapter 7- TRANSPORT

SELECTIVELY PERMEABLE (= SEMI-PERMEABLE):

EQUILIBRIUM:

CONCENTRATION-

OSMOTIC PRESSURE –

Pressure exerted against a semi-permeable membrane caused by water moving by osmosis

ACTIVE TRANSPORT-

PASSIVE TRANSPORT -
Process that moves molecules across a cell membrane WITHOUT USING ENERGY

DIFFUSION –

OSMOSIS –

FACILITATED DIFFUSION-

EXOCYTOSIS –

ENDOCYTOSIS –

PINOCYTOSIS –

PHAGOCYTOSIS –

VESICLE - A small membrane bound sac in a eukaryotic cell used to transport substances around within a cell or contain them during exocytosis or endocytosis

CARRIER PROTEIN- An INTEGRAL MEMBRANE PROTEIN that moves molecules PASSIVELY across cell membranes by attaching, CHANGING SHAPE, and flipping to the other side like a revolving door

AQUAPORIN- An INTEGRAL MEMBRANE PROTEIN that provides a passageway/tunnel across the cell membrane through which WATER molecules can diffuse PASSIVELY during osmosis

ION CHANNEL – An INTEGRAL MEMBRANE PROTEIN that provides a passageway/tunnel across the cell membrane through which IONS can diffuse PASSIVELY

SODIUM-POTASSIUM PUMP (also called Na+-K+ pump)

A MEMBRANE PROTEIN that uses energy from ATP to ACTIVELY transport two K+ ions INTO and three Na+ ions OUT of cells

PROTON PUMP (also called H+ pump)
A MEMBRANE PROTEIN that uses energy to ACTIVELY transport hydrogen ions (H+) across a cell membrane

HYPOTONIC-

ISOTONIC

HYPERTONIC

PLASM0LYSIS- The shrinking away of the cell membrane from the cell wall in a plant cell when placed in a HYPERTONIC environment

CYTOLYSIS – The swelling and bursting of an animal cell when placed in a HYPOTONIC solution

CRENATION- The shrinking of animal cells when placed in an hypertonic solution