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What is a protein moves molecules across a membrane?
Facilitated diffusion moves molecules through cell membranes passively.
Which type of molecule can move passively across the membrane?
Small and non-polar molecules, such as oxygen and carbon dioxide, can move passively across the membrane through simple diffusion. This process does not require energy and occurs in the direction of the concentration gradient, from an area of higher concentration to lower concentration.
What are the six processes by which materials pass through cell membranes?
endocytosisfacilitated diffusionexocytosissimple diffusionactive transportpassive transport
Describe the conditions needed for molecules to enter a cell passively?
Molecules can enter a cell passively through processes like simple diffusion or facilitated diffusion. For this to occur, the molecule must be small, nonpolar, and/or able to pass through ion channels or carrier proteins. Additionally, there must be a concentration gradient across the cell membrane to drive the movement of molecules into the cell.
What term defines the movement of materials along a concentration through protein channels?
Facilitated diffusion defines he movement of materials along a concentration gradient through protein channels.
What type of substances pass through the membrane by facilitated diffusion?
soluble materials which can diffuse passively .
What is a protein moves molecules across a membrane?
Facilitated diffusion moves molecules through cell membranes passively.
Do preying mantis have lungs?
Insects do not have lungs, they breath passively by diffusion through tiny holes in the abdomen.
What allows materials to flow through a cell?
diffusion
3 ways materials enter and leave cell?
Materials can enter a cell through processes like diffusion, facilitated diffusion, and active transport. These substances can leave a cell through processes such as diffusion, osmosis, and exocytosis.
Are nutrients absorbed passively or actively in the digestive tract?
Both, depending on the size of the nutrient. Much of absorption works through either endocytosis or transport of small molecules by simple diffusion. Simple diffusion and facilitated diffusion are both types of passive transport and endocytosis requires energy.
Which type of molecule can move passively across the membrane?
Small and non-polar molecules, such as oxygen and carbon dioxide, can move passively across the membrane through simple diffusion. This process does not require energy and occurs in the direction of the concentration gradient, from an area of higher concentration to lower concentration.
What are the six processes by which materials pass through cell membranes?
endocytosisfacilitated diffusionexocytosissimple diffusionactive transportpassive transport
What are the process in which materials move through a cell membrane?
diffusion and osmosis
Describe the conditions needed for molecules to enter a cell passively?
Molecules can enter a cell passively through processes like simple diffusion or facilitated diffusion. For this to occur, the molecule must be small, nonpolar, and/or able to pass through ion channels or carrier proteins. Additionally, there must be a concentration gradient across the cell membrane to drive the movement of molecules into the cell.
What term defines the movement of materials along a concentration through protein channels?
Facilitated diffusion defines he movement of materials along a concentration gradient through protein channels.
What process moves materials through a cell from areas of low concentration to areas of higher concentration?
diffusion
