What type of transport is shown in this image?
For the balloon to burst, what must be true of the solution in the beaker?
It is hypertonic.
It is hypotonic.
It is isotonic.
It has a high solute concentration.
Which statement is true of the potassium ions in the diagram?
They are nonpolar.
They are actively transported.
They are moving by passive transport.
They are moving against a concentration gradient.
What is true of the structure labeled 'E'?
It is composed of amino acids.
It is polar.
It does not mix with water.
It is cholesterol.
What is true of the region labeled 'H'?
It contains very little carbon.
It contains high quantities of nitrogen.
What is the purple structure on the left side of the diagram?
There is no way to know
What is most likely to cross the membrane at the region labeled 'H'?
Urea (a waste product that contains nitrogen)
What is most likely to cross the membrane at the region labeled 'C'?
Both glucose and Na+ ions
Neither glucose nor Na+ ions
Which statement is NOT true of the orange and blue substances in this image?
They are moving against a gradient.
They are polar or charged.
They are moving without the input of energy.
They mix easily with water.
Which term best describes the solution on the left side of the membrane?
In which direction will water move in this situation?
To the left
To the right
There will be no net movement of water
What type of solution was the red blood cell on the right placed in?
What is formed in this process?
What might the red dots in this image be?
If the purple dots in this image represent solute particles, which of the following statements is true?
The solution on the right is hypotonic.
The arrow at the bottom of the image represents the movement of solute particles.
Water will move by active transport to the left side of the membrane.
There are more free water molecules in the solution on the left side of the membrane.
A group of students placed potato cores in a variety of sucrose solutions and measure the change in mass of the cores. The percent change in mass is plotted against sucrose concentration in this graph. What can be said about the 0.6M solution?
Water from the 0.6M solution moved into the potato cores.
The 0.6M solution is hypertonic to the cores.
The 0.6M solution has more free water than the cells of the potato cores do.
All of these statements are true.
Which of the following concentrations best approximates the concentration of solute in the potato cells?
It cannot be determined.
This image provides a wonderful comparison of passive and active transport.