What is the modern understanding of the cellular or plasma membrane

Protein with carbohtdrates attached to it

Protein with lipids attached to it

Stated that membrane was made up of a phospholipids bilayer sandwiched between two layers

Membrane is a mosaic of proteins

The fuiduty of the membrane is due to

molecule possessing a polar or charged area and a nonpolar or uncharged area capable of interacting with both hydrophilic and hydrophobic environments

describes the structure of the plasma membrane as a mosaic of components including phospholipids, cholesterol, proteins, glycoproteins, and glycolipids (sugar chains attached to proteins or lipids, respectively), resulting in a fluid character (fluidity)

combination of carbohydrates and lipids

combination of carbohydrates and proteins

molecule with the ability to bond with water; “water-loving”

molecule that does not have the ability to bond with water; “water-hating”

protein integrated into the membrane structure that interacts extensively with the hydrocarbon chains of membrane lipids and often spans the membrane; these proteins can be removed only by the disruption of the membrane by detergents

protein found at the surface of a plasma membrane either on its exterior or interior side; these proteins can be removed (washed off of the membrane) by a high-salt wash

protects the cell from its external environment, mediates cellular transport, and transmits cellular signals.

Divides the interior of a cell from its outside environment

Protects the cell from its surroundings

A protein on a cell wall that binds with specific molecules so that they can be absorbed into the cell.

Functions of Plasma Membrane

Work as receivers of extracellualr inputs

Activators of intracellular processs or markers

Allows the cell to recognize one another

Transport gasses (such as O2 and CO2) and other small molecules and ions

Transport small organic molecules such sugar and amino acids

Transports large molecules (or even whole cells) by engulfing them

Removes or secretes substances such as hormones or enzymes

Why does plasma membrane is selectively permeable

The most direct form of membrane transport

Is a naturally occurring phenomenon and does not require the cell to exert any of its energy to accomplish the movement.

A physical Space in which there is a single substance concentration range has a

Passive movement of molecules from a region of high concentration to a region of low concentration.

is the difference in concentration between the two regions)

Small, uncharged molecules like 02, CO2 and H2O can move easily through the membrane.

Work wells over a short distances

What happen to the rate of diffusion once molecules enter the cell

Limit cell size

Diffusion of the solvent across a semi-permeable membrane separating two solutions

What molecule move from a region of high concentration to a region of low concentration

Facilated Transport is also known as

assist with the large molecule called glucose

Moves molecules from high to low region of concentrations

Transports noncharged molecules with a specific shape

Tunnel shape that transport small charged molecules

Does not require water molecules for other molecules to transferr

The process of moving substances againts their concentration gradients

Requires energy

Passive movement of substance into and out of the cell by means of

Transport one substance in one direction

Transport two different substances in the same direction

Transport two different substances in opposite direction

requires the use of chemical energy to move substances across a membrane, against a concentration gradient.

May be uniport, symport and antiport

The cell membrane folds inward, traps and encloses a small amount of Matter from the extracellular fluid

The reverse of endocytosis

A vesicle from inside the cell moves to the cell membrane. The vesicle fuses to the membrane and the contents are secreted

The intake of a small droplet of extracellular fluid. This occurs nearly all cell types

The intake of large dorplet of extracellular fluids. Specialized cells

Intake of specific molecules that attract to special protein in the cell membrane. Uniquely fit the shape of a specific molecule

couples the passive movement of one substance with its concentration gradient to the movement of another substance against its concentration gradient. Energy from ATP is used indirectly to establish the concentration gradient that results in the movement of the first substance.

Refers to the transportation of macromolecules, large particles, and polar substances into the cell from the external enviornment

Refers to the transportation of molecules or particles from the cell to the outside of the cell

Involved with up taking nutrients into the cell

Involved in removing waste from the cell

What are the principal components of the plasma membrane

molecules, such as hydrocarbons, can dissolve in the lipid bilayer and pass through the membrane rapidly.

such as sugars, do not cross the membrane easily.

As temperature cool, membrane switch from

The principal components of the plasma membrane

The plasma membrane has its ability to transmit signal via

What are the 2 Protein

which work as receivers of extracellular inputs and as activator of intracellular processes

which allows cell to recognize each other

Key Takes of the Permeability of the Lipid Bilayer

such as hydrocarbons, can dissolve in the lipid bilayer and pass through the membrane rapidly

such as sugar, do not Cross the membrane easily

Assist with the movement of large molecules like glucose

The process of moving substance againts their concentration Gradient

requires the use of chemical energy to move substance across a membrane, againts a confetration Gradient.

energy from the hydrolysis of ATP is used to move ions into or out of cells against their concentration gradients. The sodium-potassium pump is an important example.

couples the passive movement of one substance with its concentration gradient to the movement of another substance against its concentration gradient. Energy from ATP is used indirectly to establish the concentration gradient that results in the movement of the first substance