A carbon dioxide molecule moves down the concentration gradient to a lower concentration. What is this an example of?
Osmosis
Passive transport
Active transport
Facilitated transport
Which factor does NOT affect the rate of diffusion?
Temperature
Electrical currents
Molecular size
Aquaporins
A cell is put into a hypotonic solution of sodium chloride. What is most likely to happen to the cell?
It will swell due to intake of water
It will shrink due to loss of turgor pressure
It will shrink due to loss of water
It will become isotonic
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?
The amount of water
The water molecules
The food coloring
The dissolved product
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?
Phagocytosis
Exocytosis
Receptor mediated endocytosis
Pinocytosis
The sodium potassium pump is active in all animal cells.
Which of the following describes the solution labeled C?
Hypertonic
Isotonic
Osmotic
Hypotonic
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?
Diffusion
None of the Above
In the laboratory, cells are normally placed in a(n) solution.
In animal cells, shriveling of the cell due to water leavin the cell when the environment is hypertonic is called .
Facilitated transport is a form of transport.
In a solution, vacuoles fill with water, turgor pressure develops, and chloroplasts are seen next to the cell wall.
and an expenditure of energy are needed to transport molecules against their concentration gradient.
Por favor, aguarde! Carregando...