From high concentration to low concentration.
Small, non-polar molecules like oxygen and carbon dioxide are likely to move via passive transport through a phospholipid bilayer. These molecules can easily diffuse across the lipid bilayer due to their size and hydrophobic nature. Larger or polar molecules generally require other mechanisms such as facilitated diffusion or active transport to cross the membrane.
Passive transport is dependent on the permeability of the cell membrane, which, in turn, is dependent on the organization and characteristics of the membrane lipids and proteins. The four main kinds of passive transport are diffusion, facilitated diffusion, filtration and osmosis.Simple diffusion is the unassisted passage of small, hydrophobic, nonpolar molecules.
Simple diffusion is an example of passive transport. In this process, substances move across a cell membrane from an area of higher concentration to an area of lower concentration without the need for energy input. This mechanism allows small, nonpolar molecules, like oxygen and carbon dioxide, to enter or exit cells freely.
Active transport requires energy, unlike passive transport. The carrier proteins in active transport act as a "pump" ( fueled by ATP) to carry/attach themselfves to useful proteins for the cell.
Active transport Passive transport (diffusion and transport using protein channels) Receptor mediated transport
its a kind of passive transport.
Water and lipids
From high concentration to low concentration.
Passive transport does not require energy as it allows molecules to move across a membrane from an area of higher concentration to an area of lower concentration. Examples of passive transport include diffusion, osmosis, and facilitated diffusion.
A kind of transport by which ions or molecules move along a concentration gradient, which meansmovement from an area of higher concentration to an area of lower concentration.
No, actually diffusion is a kind of passive transport, and osmosis is a kind of diffusion. Any passive transport can happen without energy (contrary to active transport). Since, all the things you listed were passive transport, they happen down the concentration gradient and need no ATP.
Diffusion is the word you're looking for.
Glucose molecules are moved into a cell via a transport protein called a glucose transporter. This process is facilitated diffusion, a type of passive transport that does not require energy. Glucose transporters help move glucose across the cell membrane down its concentration gradient.
Osmosis is the diffusion of water through a semi-permeable membrane (from a low-concentration gradient to a high-concentration gradient). Ummm how in the world does that answer the question "What kind of transport is Osmosis?" Is it Active or Passive that's what we want to know however I do believe from my information that the answer in which we are looking for is PASSIVE. PLEASE correct me if I am incorrect and excuse my mistake.
nutrient are broken down before entering the cell.small parts of nutrients are taken inside a cell be diffusion and passive transport. there is no energy usage this kind of transport. but there are some big molecules that can not enter cell membrane. so there are taken by active transport.(there is a energy usage in active transport).
I don't think that question has one answer, considering how vast the field molecular science is and there are many things to consider, but I think what your looking for is "osmosis". The process in which a solvent (generally water) moves through a mostly permeable membrane (permeable to the solvent not to the solute) from a high solute concentration to a low solute concentration without energy inputs of any kind separating two solutions of different concentrates. hope this helps.