How do substances move through cell membrane?

Answer 1

Active transport - When the cell uses energy to move the substance across a partially permeable membrane. Usually done when What_are_three_ways_for_materials_to_move_in_and_out_of_cellsagainst a concentration gradient or water potential.

Diffusion/Passive transport - When the substance moves across a partially permeable membrane down a concentration gradient or What_are_three_ways_for_materials_to_move_in_and_out_of_cellspotential. (Method takes no energy).

Osmosis - The movement of water down a water potential across a partially permeable membrane. (This uses no energy).

Answer 2

Through the use:

Carrier proteins are in the phospholipid bilayer (the membrane) and they transport large molecules: glucose and amino acids via the proteins by changing the shape of them to make them more easy to transport.

Channel proteins: Used for ions (as the membrane is polar and so cannot transport charged particles), and they can be gated and so selected about what they allow through the protein.

Active Transport: Using ATP (energy) to move from a low to a high concentration of solutes (with other diffusion it is from high to low diffusion) it transports molecules using carrier proteins, the only difference is the direction e.g. from a high or a low concentration.

Fluid mosaic model: Due to the phospholipids in the bilayer and the fluid like consistancy of the membrane, small non polar (non charged particles/molecules) can move through the membrane unaided.

Answer 3

Diffusion, some substances need facilitated diffusion others dont because they're polar or small to pass through.

Active Transport is also another way.

Osmosis is the transport of water across the membrane.

Answer 4

Substances move through the cell membrane via passive diffusion (from high to low concentration), facilitated diffusion (with the help of transport proteins), or active transport (requiring energy to move against the concentration gradient). The specific method depends on the size, charge, and solubility of the substance.

Answer 5

Diffusion, osmosis, facilitated diffusion, and active transport

Answer 6

Five different ways materials move through the plasma or cell membrane: osmosis, diffusion, facilitated diffusion, active transport, and endocytosis.

Answer 7

osmosis, diffusion, facilitated diffusion, active transport, and endocytosis

Answer 8

1. Lipid Diffusion
2. Osmosis
3. Passive Transport
4. Active Transport
5. Vesicles

Answer 9

Osmosis

Diffusion

Facilitated Diffusion

Active Transport

Endocytosis

Exocytosis