Chapter 5 Terms Quiz

A property that the membrane allows some substances through while keeping others out

A description of the membrane because it is made up of lots of little pieces that can move around

Proteins that help molecules cross the membrane

The tendency for molecules of any substance to spread out into the available space, move down concentration gradient

The diffusion of a substance across a membrane without the input of energy

The difference between the concentration of a particular molecule in one area and the concentration of it in another area (High and low)

The diffusion of water across a selectively permeable membrane

A measure of solutes surrounding the cell compared to inside the cell (Gain or lose water)

When solution surrounding the cell and the inside of the cell have equal solute concentrations

When the solution outside the cell has a higher concentration of solutes than inside the cell, cell will lose H2O

When the solution outside the cell has a lower concentration of solutes than inside the cell

The control of water balance within a cell or organism

A process which a plant’s plasma membrane may pull away from the cell wall which usually kills it

When transport proteins act as selective corridors to allow certain things into the cell

Protein channel that allows water molecules through very quickly (H2O hole)

Requires energy to move molecules across a membrane against the concentration gradient

Cellular energy molecule which energy is used

Takes material into a cell within vesicles that bud inward from the plasma membrane (Inside Cell)

The secretion of large molecules from inside vesicles within the cell to outside (Outside Cell)

A cell engulfs a particle and packages it within a food vacuole (Cellular Eating)

A cell “gulps” droplets of fluid by forming tiny vesicles (Cellular Drinking)

A cell in very specific molecules that attach to a signal receptor

The capacity/ability to perform work and makes the world go around.

The energy of motion

Positional/stored energy

A type of kinetic energy and a product of all energy conversions

A measure of disorder, or randomness

The study of energy transformations

Energy stored in chemical bonds