Mastering A and P Post Lab 3

Which of the following solutes would move the fastest?

sodium chloride
urea
albumin
glucose

sodium chloride

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

the potential energy of the solute the membrane pore size

In this activity, the solutes were transported through the dialysis membrane by _______.

osmosis
facilitated diffusion
active transport
simple diffusion

simple diffusion

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

50 mwco 100 mwco and 200 mwco

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

move solutes with their concentration gradient

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

decreasing the number of carrier proteins

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

the maximum rate of transport will occur

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.

there was no change in the transport rate of glucose

Which of the following generated osmotic pressure?

sodium chloride, glucose and albumin generated osmotic pressure.
sodium chloride
glucose
albumin

sodium chloride glucose and albumin generated osmotic pressure

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.

the solutes can diffuse through the pores and the concentration of solutes is the same on both sides of the membrane

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.

the net movement of water is toward the albumin

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.

the cell will shrink