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Why is facilitated diffusion not considered an active transport process?
Facilitated diffusion is not considered an active transport process because it does not require energy input from the cell. Instead, it relies on the assistance of transport proteins to move molecules across the cell membrane, following their concentration gradient. Active transport, on the other hand, requires energy to move molecules against their concentration gradient.
Why would the body use facilitated diffusion to move the amino acids instead of diffusion?
Facilitated diffusion is used for amino acids because they are polar molecules and cannot diffuse through the cell membrane on their own. Facilitated diffusion relies on carrier proteins to transport amino acids across the membrane, helping them move from an area of high concentration to low concentration. This process is quicker and more efficient than simple diffusion for polar molecules.
Molecues of suger water oxygen and carbon dioxide do not require what to move from area of high to low concentration?
No energy is required to move molecules of oxygen, carbon dioxide, sugar, or water from areas of high to low concentration across a membrane. Instead, diffusion is used.
Which of the following predicted property of lipid bilayers would result if the phospholipids had only one hydrocarbon chain instead of two?
If the phospholipids had only one hydrocarbon chain instead of two, the bilayer would be less stable and more permeable to molecules due to the reduced hydrophobic interactions. This would result in a less effective barrier for the cell, leading to potential issues with maintaining cellular structure and function.
When oxygen move from the lungs to the bloodstream is it by osmosis?
No, the movement of oxygen from the lungs to the bloodstream is not by osmosis. Instead, it occurs through a process called diffusion, where oxygen molecules move from an area of high concentration (in the lungs) to an area of lower concentration (in the bloodstream) to reach equilibrium.
What is the difference between diffusion and osmosi s?
Osmosis is the movement of a solvent (water) into a cell where the concentration of a solute is higher, the lower concentration of solute being outside the root cells. Diffusion involves the spreading of a solute from areas of higher concentrations to areas of lower concentration within a solvent.Osmosis is made possible by a semi-permeable membrane which allows the solvent in, instead of allowing the solute out.
Is simple diffusion saturable?
No, simple diffusion is not saturable because it does not involve specific carrier proteins or channels that can become saturated as concentration increases. Instead, it is a passive process that relies on the concentration gradient of molecules for movement across a membrane.
In facilitated diffusion which process does not require energy?
Simple and facilitated diffusion are a part of passive transport. This refers to the movement of molecules, atoms and ions across the cell membrane. In both of these processes, molecules move from areas of high concentration to areas of lower concentration because equilibrium is trying to be maintained in living organisms. Simple diffusion just happens randomly and without any aides. Facilitated diffusion uses proteins in the cell membrane to guide polar molecules and ions in and out of the membrane (always to areas of lower concentration) and DOES NOT require ENERGY.Only active diffusion requires energy.
What substance cannot pass directly through the phospholipids of the plasma membrane?
Large polar molecules and charged molecules cannot pass directly through the phospholipids of the plasma membrane because the phospholipid bilayer is impermeable to them. Instead, these molecules rely on specific transport proteins like channels or carriers to facilitate their movement across the membrane.
Why is facilitated diffusion not considered an active transport process?
Facilitated diffusion is not considered an active transport process because it does not require energy input from the cell. Instead, it relies on the assistance of transport proteins to move molecules across the cell membrane, following their concentration gradient. Active transport, on the other hand, requires energy to move molecules against their concentration gradient.
Osmosis does not require what?
Osmosis does not require energy input, such as ATP, for the movement of molecules across a semi-permeable membrane. Instead, it relies on the concentration gradient of solute molecules to drive the movement of water molecules.
Is filling a balloon with a helium pump an example of diffusion?
No, filling a balloon with a helium pump is not an example of diffusion. Instead, it involves the active transfer of helium gas into the balloon under pressure. Diffusion, on the other hand, refers to the natural movement of molecules from an area of higher concentration to an area of lower concentration, which occurs passively without external force.
The difference between diffusion and osmosis?
Diffusion is when molecules travel from a higher concentration to a lower concentration. For example when you have air freshener on one side of the room it will spread to the other because the scent molecules are diffusing through the air. Osmosis is the movement of water molecules from higher concentration to a lower concentration.
Why would the body use facilitated diffusion to move the amino acids instead of diffusion?
Facilitated diffusion is used for amino acids because they are polar molecules and cannot diffuse through the cell membrane on their own. Facilitated diffusion relies on carrier proteins to transport amino acids across the membrane, helping them move from an area of high concentration to low concentration. This process is quicker and more efficient than simple diffusion for polar molecules.
What is the different between Diffusion and Osmosis?
Diffusion is the process in which there is movement of a substance to an area of lower concentration of that substance to an area of lower concentration whereas osmosis is the diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal.
Molecues of suger water oxygen and carbon dioxide do not require what to move from area of high to low concentration?
No energy is required to move molecules of oxygen, carbon dioxide, sugar, or water from areas of high to low concentration across a membrane. Instead, diffusion is used.
Does endocytosis occur in prokaryotes?
Yes, endocytosis does not occur in prokaryotes because they lack membrane-bound organelles and do not perform phagocytosis, pinocytosis, or receptor-mediated endocytosis like eukaryotic cells. Instead, prokaryotes rely on other mechanisms such as simple diffusion, facilitated diffusion, and active transport to take in nutrients and molecules.
