Call Structure And Function Flashcards
What type of cells have genetic material that is not contained in a nucleus?
Prokaryotic cells
What type of cells contain a nucleus in which their genetic material is separated from the rest of the cell?
Eukaryotic cells
What regulates what enters and leaves the cell and also provides protection and support?
Cell membrane
What is the main function of the cell wall?
To provide support and protection for the cell
Because diffusion depends upon random particle movements, substances diffuse across membranes without requiring the use of what?
Energy from the cell
What is the diffusion of water through a selectively permeable membrane?
Osmosis
What osmosis effect occurs when the concentration of solutes is the same inside and outside of the cell when water molecules move equally in both directions?
Isotonic
What osmosis effect occurs when the solution has a higher solute concentration than the cell, and a net movement of water molecules out of the cell causes it to shrink?
Hypertonic
What osmosis effect occurs when the solution has a lower solute concentration than the cell, and the net movement of water molecules into the cell causes it to swell?
Hypotonic
During what type of diffusion do molecules, such as glucose, have trouble diffusing across the cell membrane’s lipid bilayer on their own, so they move through protein channels instead?
Facilitated diffusion
What type of diffusion involves energy use and endocytosis or exocytosis?
Active transport
What occurs when the membrane forms a pocket around a particle and breaks loose from the outer portion of the cell membrane to form a vesicle within the cytoplasm?
Endocytosis
What occurs when the membrane of a vesicle surrounds the material the fuses with the cell membrane; the contents are forced out of the cell?
Exocytosis
What does the cell theory state?
All living things are composed of cells. Cells are the basic units of structure and function in living things.
New cells are produced from existing cells.
