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Section 1

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Passive transport

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7 years ago

Date created

Mar 1, 2020

Cards (19)

Section 1

(19 cards)

Passive transport

Front

the movement of substances across a cell membrane without the use of energy by the cell from high to low concentration , with/down concentration gradient

Back

What happens in hypotonic environment

Front

Turgor pressure , cell gets bigger n water goes in

Back

Diffusion

Front

Movement of small uncharge molecules directly thru phospholipid bilayer (passive transport)

Back

Solvent

Front

the substance in which the solute dissolves

Back

Example of diffusion

Front

Gas exchange in lungs occurs in cell membrane

Back

active transport

Front

Movement of materials thru cell membrane that uses energy (atp) from low to high concentration , against/up gradient

Back

Endocytosis

Front

process by which a cell takes material into the cell by infolding of the cell membrane , engulfing , by forming vesicle

Back

facilitated diffusion

Front

Movement of specific molecules across cell membranes through protein channels (passive) // solute molecules travel thru proteins instead cus they can't get thru membrane alone

Back

What happens in hypertonic environment

Front

Cell gets smaller n water goes out

Back

Dynamic Equilibrium

Front

Result of diffusion where there is continuous movement of particles but no overall change in concentration

Back

Solute

Front

A substance that is dissolved in a solution.

Back

Hypotonic

Front

Having a lower concentration of solute than another solution

Back

sodium-potassium pump

Front

Maintain electrical charge of cell (active)

Back

Osmosis

Front

Diffusion of water through a selectively permeable membrane (passive)

Back

Protein pumps

Front

Move small particles to where they more concentrated using membrane proteins , can be pumped in/out cell , ex: sodium potassium pumps (active)

Back

Hypertonic

Front

when comparing two solutions, the solution with the greater concentration of solutes

Back

Exocytosis

Front

reverse of endocytosis , releasing , outward movement of large numerous particles

Back

Equilibrium

Front

(1) The condition in which all acting influences are balanced or canceled by equal opposing forces, resulting in a stable system. (2) The state of balance or static; the absence of net tendency to change. Static result of diffusion

Back

Isotonic

Front

when the concentration of two solutions is the same

Back