Which means of particle transport requires energy?
Which of the following is a function (job) of the cell membrane>
An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes
During diffusion, when the concentration of molecules on both sides of a membrane is THE SAME, the molecules will
Diffusion occurs because
Which means of particle transport is shown in the picture?
Molecules tend to move from an area of high concentration to low concentration is called
The diffusion of water across a selectively membrane is called
Large molecules, such as glucose, that cannot cross the lipid bilayer can still move across the membrane through a type of PASSIVE transport called
The relatively constant internal physical conditions of an organism is called
Some materials can move across the cell membrane against a concentration gradient by
Cells within a a multicellular organism communicate by chemical signals. In order to receive and respond to a certain chemical signal, a cell must have a ___________ for that chemical
Molecules from inside the cell being expelled out of the cell is known as
What would happen to to an animal cell with an internal salt concentration of 9% if it were placed in a salt solution with a concentration of 3%?
The picture shows an example of what type of solution?
Once equilibrium is reached, equal numbers of molecules move in either directions across a semipermeable membrane.
Proteins called aquaporins are important to the movement of water through cell membranes. These proteins participate in active transport.
Moving materials from an are of LOW concentration to HIGH concentration requires active transport. (against the gradient)