Molecules usually move from high concentration to lower concentrations.
Molecules are moved by active transport.
Many polar molecules and ions with the assistance of transport proteins.
AMPLITUDE
This is phagocytosis.
Large molecules such as proteins cannot be moved into a cell by osmosis or diffusion due to their size and charge. These molecules require specialized transport mechanisms such as active transport to enter the cell.
The glucose goes in through the membrane and can in or out either ways.
In the sodium-potassium pump, three sodium ions are moved out of the cell and two potassium ions are moved into the cell. This process helps maintain the cell's resting membrane potential and is crucial for nerve and muscle function.
bulk transport
into your small intestine.
Large molecules like carbohydrates are moved through the cell membrane via a process called facilitated diffusion or active transport. Facilitated diffusion involves the use of specific transport proteins embedded in the membrane to help the molecules pass through, while active transport requires energy in the form of ATP to move the molecules against their concentration gradient.
When molecules are moved from a low concentration area to a high concentration area.
non-polar molecules like fatty acids and retinol are transported through facilitated diffusion