True or False:  If a wet-mount of milk, water, and a small amount of ink (nigrosin) is viewed under high power with a light microscope, individual water molecules can be seen vibrating or “bouncing,” due to random thermal motion.

When a plant cell is placed in a solution of high salt concentration, the cell membrane shrinks away from the cell wall and concentrates the cellular contents.  This process, which can easily be observed using a light microscope, is called …

When Benedict’s reagent comes into contact with ___, and the mixture is then placed in boiling water, the solution turns from blue to orange-red.

Match the description given with the appropriate phenomenon.  Use each answer only once.

Paramecium can sense molecules released from decaying organic matter, and then swim toward the source of those molecules, by detecting a chemical gradient.  This is an example of …

When Benedict’s reagent comes into contact with ___, and the mixture is then placed in boiling water, the solution turns from blue to orange-red.

Which of the following is true of diffusion?

When a plant cell is placed in a solution of high salt concentration, the cell membrane shrinks away from the cell wall and concentrates the cellular contents.  This process, which can easily be observed using a light microscope, is called …

One photosynthetic protist that swims using a flagellum is …

Match the description given with the appropriate phenomenon.  Use each answer only once.