Which of the following solutes would move the fastest?
sodium chloride
urea
albumin
glucose
answer
sodium chloride
question
For solutes that move by simple diffusion, which of the following does NOT affect the rate of simple diffusion across a membrane?
Check all that apply.
the size of the solute
the concentration of the solute
the potential energy of the solute
the membrane pore size
answer
the potential energy of the solute the membrane pore size
question
In this activity, the solutes were transported through the dialysis membrane by _______.
osmosis
facilitated diffusion
active transport
simple diffusion
answer
simple diffusion
question
Through which membrane(s) would sodium chloride diffuse?
50 MWCO, 100 MWCO, and 200 MWCO
200 MWCO only
20 MWCO, 50 MWCO, 100 MWCO, and 200 MWCO
100 MWCO and 200 MWCO
answer
50 mwco 100 mwco and 200 mwco
question
Simple diffusion and facilitated diffusion both _______.
require ATP
move solutes against their concentration gradient
move solutes with their concentration gradient
utilize a membrane-embedded carrier protein
answer
move solutes with their concentration gradient
question
Which of the following would decrease the rate of facilitated diffusion?
decreasing the amount of ATP available
decreasing the number of carrier proteins
increasing the amount of ATP available
increasing the number of carrier proteins
answer
decreasing the number of carrier proteins
question
What happens to facilitated diffusion when the protein carriers become saturated?
ATP will be utilized for transport
The maximum rate of transport will occur.
The protein carriers fall apart.
The transport rate will increase
answer
the maximum rate of transport will occur
question
What happened when sodium chloride was added as a solute in the left beaker?
There was no change in the transport rate of glucose.
Sodium was cotransported with the glucose.
The transport rate of glucose increased.
The transport rate of glucose decreased.
answer
there was no change in the transport rate of glucose
question
Which of the following generated osmotic pressure?
sodium chloride, glucose and albumin generated osmotic pressure.
sodium chloride
glucose
albumin
answer
sodium chloride glucose and albumin generated osmotic pressure
question
Which of the following would result in NO change in osmotic pressure across a membrane?
The solutes can diffuse through the pores and the concentration of solutes is the same on both sides of the membrane.
The solutes can diffuse through the pores.
Water is moving with its concentration gradient.
The concentration of solutes is the same on both sides of the membrane.
answer
the solutes can diffuse through the pores and the concentration of solutes is the same on both sides of the membrane
question
With the experimental conditions set at 10 mM glucose and 9 mM albumin, and the 200 MWCO membrane in place, which of the following is true?
Albumin and glucose diffuse through the membrane.
The net movement of water is away from the albumin.
The net movement of water is toward the glucose.
The net movement of water is toward the albumin.
answer
the net movement of water is toward the albumin
question
A cell is immersed in a beaker of solution. The cell membrane is permeable to water but impermeable to solutes. If the intracellular concentration is 10 mM and the solution is 20 mM, which of the following is true?
The cell will shrink.
The net movement of water is into the cell.
The solution is hypotonic.
There is no net change in the movement of water into the cell.
answer
the cell will shrink
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