Test 2

Front

Atoms and molecules are in a state of constant motion known as ________ movement.

Back

Brownian

Front

Atoms and molecules move in one direction until they encounter _____________.

Back

Similar atoms or molecules

Front

Application of heat will ______ the Brownian movement of atoms or molecules

Back

increase

Front

Living membranes are ____________

Back

selectively permeable

Front

A membrane that only allows water to pass through is ___________.

Back

semipermeable membrane

Front

Diffusion is the movement of molecules _______ or down a concentration gradient.

Back

along

Front

Molecules will diffuse through a living membrane if they are ________ or small enough to pass through the openings in ________ proteins.

Back

Lipid Soluble/Channel

Front

Steroid hormones _____ able to diffuse through the plasma membrane because they are ______.

Back

are/lipid-soluble

Front

Protein hormones ____ able to diffuse through the plasma membrane because they are _______.

Back

are not/too large of a molecule

Front

Carrier proteins are used during ________

Back

facilitated diffusion