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The movement of glucose molecules across a plasma membrane from an area of lower glucose concentration to an area of higher glucose concentration occurs due to?
active transport, specifically through a process known as secondary active transport or cotransport. This process relies on the use of energy generated by the concentration gradient of another molecule, usually sodium ions, to drive the movement of glucose against its gradient.
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The process by which glucose can pass through a cell membrane by combining with special carrier molecules is called?
The process by which glucose can pass through a cell membrane by combining with special carrier molecules is called facilitated diffusion. In this process, carrier proteins aid in the movement of glucose across the membrane down its concentration gradient.
How simple diffusion can be distinguished from facilitated diffusion?
Simple diffusion does not involve the use of transport proteins and relies on the concentration gradient of molecules for movement across the membrane. Facilitated diffusion, on the other hand, requires specific transport proteins to help facilitate the movement of molecules across the membrane, often against their concentration gradient.
What substance is correctly paired to the way it crosses the plasma membrane?
Water crosses via osmosis. glucose via diffusion. Carbon dioxide needs assistance to pass through the membrane so it requires active transport.
How does eukaryotic and prokaryotic organisms undergo facilitated diffusion?
Diffusion is the ability of molecules to follow a concentration gradient, moving from regions of high to low concentration. For small, nonpolar molecules such as O2, CO2, and some narcotics, they are small enough to slip through the phospholipid bilayer of the plasma membrane. Small, polar molecules such as water, are also small enough to slip through, but because of their polar nature, this movement is impeded by a factor of 1000. What about larger molecules like glucose? These molecules are too big to slip through the phospholipid bilayer, regardless of the concentration gradient. Larger molecules require a protein channel for transport across the plasma membrane. Because the movement will be driven by the concentration gradient, this movement is called facilitated diffusion, to indicate that a protein channel is necessary. Both prokaryotic and eukaryotic cells have protein channels for this purpose.
What allows glucose molecules to pass through membrane-spanning proteins?
Glucose molecules pass through membrane-spanning proteins, specifically glucose transporters, via facilitated diffusion. These transporters provide a hydrophilic pathway that allows glucose to move down its concentration gradient without requiring energy. The specific binding sites on the transporter recognize glucose molecules, undergoing conformational changes to shuttle them across the membrane. This process ensures efficient uptake of glucose in cells, especially in tissues like muscle and fat.
The process by which glucose can pass through a cell membrane by combining with special carrier molecules is called?
The process by which glucose can pass through a cell membrane by combining with special carrier molecules is called facilitated diffusion. In this process, carrier proteins aid in the movement of glucose across the membrane down its concentration gradient.
What is the process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane bound carrier proteins called?
The process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane bound carrier proteins is called facilitated diffusion. Facilitated transport is passive and does not directly require chemical energy from ATP.
How simple diffusion can be distinguished from facilitated diffusion?
Simple diffusion does not involve the use of transport proteins and relies on the concentration gradient of molecules for movement across the membrane. Facilitated diffusion, on the other hand, requires specific transport proteins to help facilitate the movement of molecules across the membrane, often against their concentration gradient.
Glucose is a molecule that can move across the cell membrane if the concentration of glucose is high or inside the cell than outside the cell then what will happen by the process of diffusion?
glucose molecules will diffuse out of the cell. apex
The cell uses energy to transport glucose through the cell membrane?
Glucose moves across the cell membrane through facilitated diffusion. This type of transport uses protein carriers to assist glucose molecules across the cell membrane from an area of high concentration to an area of low concentration.
What is Movement from high glucose to low glucose?
Movement of glucose from an area of high concentration to an area of low concentration is known as passive transport or diffusion. Glucose molecules move down their concentration gradient in this process, requiring no energy input from the cell.
Give example of facilitated diffusion?
An example of facilitated diffusion is the movement of glucose into a cell with the help of glucose transport proteins embedded in the cell membrane. These transport proteins provide a channel for glucose molecules to pass through the membrane, following the concentration gradient from higher to lower concentration without requiring energy input.
How do glucose molecules cross a plasma membrane on the apical side of epithelial cells?
Glucose molecules cross the plasma membrane on the apical side of epithelial cells through facilitated diffusion using glucose transporters such as GLUT1 and GLUT2. These transporter proteins help the glucose molecules move down their concentration gradient into the cell.
Oxygen carbon dioxide glucose and other small molecules cross the plasma membrane through the process of?
Diffusion. This is the passive movement of molecules from an area of high concentration to an area of low concentration, without the need for energy input.
What is a passive method by which glucose molecules enter cells?
Passive diffusion is a method by which glucose molecules enter cells. Glucose can diffuse through the cell membrane down its concentration gradient without the need for energy input from the cell.
What process does Glucose use to get past a cell wall?
Glucose enters a cell through the process of facilitated diffusion, where it passes through membrane transport proteins called glucose transporters. These transporters help facilitate the movement of glucose across the cell membrane by following its concentration gradient.
What nutrients are absorbed by osmosis?
Nutrients such as water, minerals, and small molecules like glucose are absorbed by osmosis in the small intestine. Osmosis is the movement of water across a semipermeable membrane from an area of lower solute concentration to an area of higher solute concentration.
