Osmosis Quiz

The diagram represents a cell and several molecules. The number of molecules shown represents the relative concentration of the molecules inside and outside of the cell.

Molecule C could enter the cell as a direct result of

• digestion

• diffusion

• active transport

• enzyme production

Homeostasis is maintained in a single-celled organism by the interaction of

• organs

• systems

• tissues

• organelles

A substance is most likely to diffuse into a cell when

• it is a large organic food molecule such as protein or starch

• it is enclosed in an organelle such as a vacuole

• the concentration of the substance is greater outside the cell than inside

• the pH of the substance is greater than the pH of the cell

The calcium concentration in the root cells of certain plants is higher than in the surrounding soil. Calcium may continue to enter the root cells of the plant by the process of

• diffusion

• respiration

• active transport

• protein synthesis

Normally, in the process of osmosis, the net flow of water molecules into or out of the cell depends upon differences in the

• concentration of water molecules inside and outside the

  cell

• concentration of enzymes on either side of the cell

  membrane

• rate of molecular motion on either side of the cell

  membrane

• rate of movement of insoluble molecules inside the cell

A student prepared four different red blood cell suspensions, as shown in the chart. Which process is most likely involved in the change in red blood cell volume?

• active transport

• evaporation

• replication

• diffusion

If frog eggs taken from a freshwater pond are placed in a saltwater aquarium, what will most likely happen?

• Water will leave the eggs

• Salt will leave the eggs

• Water will neither leave nor enter the eggs

• The eggs will burst

A red onion cell has undergone a change, as represented in the diagram. This change is most likely due to the cell being placed in

• salt water

• distilled water

• darkness

• light

A biologist diluted a blood sample with distilled water. While observing the sample under a microscope, she noted that the red blood cells burst. This bursting is most likely the result of which process?

• staining

• active transport

• ingestion

• osmosis

The net movement of molecules into cells is most dependent upon the

• number of chromosomes

• selectivity of the plasma membrane

• number of nucleoli

• selectivity of the cell wall