Passive Transport and Active Transport

A carbon dioxide molecule moves down the concentration gradient to a lower concentration. What is this an example of?

Which factor does NOT affect the rate of diffusion?

A cell is put into a hypotonic solution of sodium chloride. What is most likely to happen to the cell?

A drop of food coloring is placed in a bowl of water. The food coloring and water molecules both move toward the lower concentration, and eventually dissolve. Which variable in this testing would be the solute?

Vesicles form around blood cells to help ingest substances because they are too small to do it on their own. What is the term for this?

The sodium potassium pump is active in all animal cells.

Which of the following describes the solution labeled C?

Osmosis is the diffusion of water across a differentially permeable membrane due to temperature differences

The plasmodesmata can only be found in plant cells.

What best explains the rapid passage of glucose across the plasma membrane?

In the laboratory, cells are normally placed in a(n) [blank_start]isotonic[blank_end] solution.

In animal cells, shriveling of the cell due to water leavin the cell when the environment is hypertonic is called [blank_start]crenation[blank_end].

Facilitated transport is a form of [blank_start]passive[blank_end] transport.

In a [blank_start]hypotonic[blank_end] solution, vacuoles fill with water, turgor pressure develops, and chloroplasts are seen next to the cell wall.

[blank_start]Carrier proteins[blank_end] and an expenditure of energy are needed to transport molecules against their concentration gradient.