Transport

Molecule A and B come in contact with the cell membrane of the same cell. Molecule A passes through the membrane readily, but Molecule B does not. Which statement could describe molecule A and B?

• Molecule A is a protein, Molecule B is a fat.

• Molecule A is a starch, Molecule B is a simple sugar.

• Molecule A is an amino acid, Molecule B is a simple sugar.

• Molecule A is a simple sugar, Molecule B is a starch.

Cyanide is a poison that limits the ability of an animal cell to manufacture ATP. In a cell containing a small amount of cyanide, which process would be least affected?

• Movement

• Cells Division

• Active Transport

• Diffusion

The process of active transport requires the most direct use of

• Carbon Dioxide

• ATP

• Amino Acids

• Glucose

What is one factor that influences which molecules can pass through a cell membrane?

• Size

• Shape

• Color

• If it is harmful

Why must food be digested before they can enter a cell?

• To make sure all the extra water is out.

• To make sure it is small enough to fit into the cell

• To make sure the harmful components have been removed

• It does not have to be digested

A student fills a dialysis membrane bag with a mixture of red dye, yellow dye and water. He soaks the bag in pure water for 24 hours and then observes the water on the outside of the bag turns yellow. Which statement best explains the results of this experiment?

• Water diffused into the membrane bag.

• The dialysis membrane bag actively transported yellow dye out.

• Only red dye diffused through the membrane.

• The yellow dye molecules are smaller than the red dye molecules.

What will happen to a red onion cell in a wet mount slide when a salt water solution is added to it.

• What will move into the cell.

• Water will move out of the cell.

• The cell will burst.

• Nothing will happen to it, it has a cell wall.

If frog eggs taken from a fresh water pond are placed in a saltwater aquarium, what would most likely happen?

• The eggs will burst.

• Salt will leave the eggs.

• Water will neither enter nor leave the eggs.

• Water will leave the eggs.

A student put a few drops of lemon juice into an uninflated balloon.The student tied a knot in the balloon, placed it in a shoe box, and covered it with a lid. The following day, the student opened the box and was able to smell lemon in the box. Through what process were molecules able to pass through the balloon?

• Osmosis

• Diffusion

• Active Transport

• Transfusion

Diffusion is the movement of molecules from an area of _____ concentration to an ______ concentration

• High,

  Low

• Low,

  High

• High,

  High

• Low,

  Low