Go on. Explore!

lvl 0 • 0 xp

lvl 1

Home Market Decks Interests

Membranes & Transport - AP Biology

memorize.ai (lvl 286)

(0)

37 cards

()

Section 1

Preview this deck

simple diffusion

Front

1 / 37

Biology Science

0.0

0 reviews

5			0
4			0
3			0
2			0
1			0

Active users

All-time users

Favorites

Last updated

6 years ago

Date created

Mar 1, 2020

Cards (37)

Section 1

(37 cards)

simple diffusion

Front

Back

Active Transport

Front

Movement of substances against the concentration gradient through protein carrier.

Back

facilitated diffusion

Front

Passive movement of substances through protein carriers.

Back

Water Potential

Front

The measure of the relative tendency of water to move from one area to another. Water travels toward the LOWER one.

Back

solvent

Front

Liquid portion of a solution that serves to dissolve the solute.

Back

isotonic solution

Front

Solution that is equal in solute concentration to that of the cytoplasm of a cell; causes a cell to neither gain nor lose water by osmosis.

Back

osmosis

Front

Diffusion of water through a differentially permeable membrane.

Back

Phagocytosis

Front

Cell engulfing large particle.

Back

hypotonic solution

Front

Lower solute (more water) concentration than the cytoplasm of a cell;

Back

diffusion

Front

Movement of molecules or ions from a region of higher to lower concentration; it requires no energy and tends to lead to an equal distribution.

Back

Cell mediated Endocytosis

Front

Cell Engulfing substance after receptors stimulated (cholesterol for ex. is taken in this way)

Back

channel protein

Front

Protein that forms a channel that allows a particular molecule or ion to cross the plasma membrane.

Back

solute

Front

Substance that is dissolved in a solvent, forming a solution.

Back

turgor pressure

Front

Pressure of the cell contents against the cell wall; determined by the water content of the vacuole and provides internal support.

Back

Pinocytosis

Front

Cell Engulfing small particles/liquid droplet (cell drinking)

Back

sodium-potassium pump

Front

Type of active transport that moves Na+/K+ across membranes (3Na+ out and 2 K+ in. Requires 1 ATP)

Back

aquaporin

Front

Channel protein through which water can diffuse across a membrane.

Back

membrane potential

Front

voltage across a membrane

Back

Electrochemical Gradient

Front

a difference in ions and in charge across a membrane (results in membrane potential)

Back

glycoprotein

Front

Protein in plasma membranes that bears a carbohydrate chain. usually acts as an ID marker

Back

bulk transport

Front

Movement of substances too large for protein transport into or out of cell. Includes Endocytosis and exocytosis.

Back

junction protein

Front

Proteins that assist cell-to-cell communication at the plasma membrane.

Back

Proton pump

Front

Protein that performs Active transport of H+ across membrane

Back

plasmolysis

Front

Contraction of the cell contents in plants due to the loss of water resulting in cell membrane pulling away from cell wall.

Back

flaccid

Front

when a plant cell is somewhat wilted (opposite of turgid)

Back

Co-transport

Front

When a molecule can only be carried across the membrane with a second molecule (usually linked to a pump)

Back

Selectively permeable

Front

Ability of plasma membranes to regulate the passage of into and out of the cell; allowing some to pass through and preventing the passage of others.

Back

cholesterol

Front

A steroid found in animal plasma membranes that helps keep them fluid

Back

Solute Potential

Front

-iCRT (measured in bars). For pure water it is zero.

Back

carrier protein

Front

Protein that combines with and transports a molecule or ion across the plasma membrane. (protein changes shape in process)

Back

Receptor-mediated endocytosis

Front

proteins on surface stimulate a cell to engulf particles. Cholesterol taken in this way

Back

hypertonic solution

Front

Higher solute concentration (less water) than the cytoplasm of a cell; causes a cell to lose water by osmosis.

Back

phospholipid

Front

main component of the cell membrane. Has a hydrophilic & hydrophobic portion.

Back

receptor protein

Front

Protein located in the plasma membrane or within the cell; binds to a substance and sends a message into the cell to respond.

Back

lysis

Front

Bursting of a cell.

Back

fluid-mosaic model

Front

Model for the cell membrane based on the changing location and pattern of protein molecules in a fluid phospholipid layer.

Back

enzymatic protein

Front

Protein that catalyzes a specific reaction.

Back