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The movement of substances across the cell membrane that requires the cell to use energy?
It's called active transport. When talking about the cell, it is usually bigger substances that use passages in the cell membrane to access the inner part of the cell, and they need energy to get there. The opposite; passive transport or diffusion, is the movement of dissolved materials through a cell membrane without the use of cellular energy. THis happens with smaller substances.
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What is the movement of materials across a membrane that requires energy input called?
Active transport is the movement of materials across a membrane that requires energy input, typically in the form of ATP. This process allows cells to move molecules against their concentration gradient, ensuring the proper balance of ions and molecules inside and outside the cell.
Does facilitated diffusion require a carrier or channel protein for the movement of molecules across the cell membrane?
Yes, facilitated diffusion requires a carrier or channel protein for the movement of molecules across the cell membrane.
How does osmosis diffusion play a role in the movement of substances across a semipermeable membrane?
Osmosis and diffusion are processes that allow substances to move across a semipermeable membrane. Osmosis is the movement of water molecules from an area of low solute concentration to an area of high solute concentration, while diffusion is the movement of solute molecules from an area of high concentration to an area of low concentration. Together, osmosis and diffusion help maintain balance and regulate the movement of substances across the membrane.
What movement of the substances through a cell membrane against a concentration gradient requires energy?
no because it is a form of passive transport. only active transport requires energy. facilitated diffusion just means that it cant be just absorbed through the membrane, it must go through specific chanels or be helped by transport proteins. but because facilitated diffusion moves from higher to lower concentrations, it requires no energy.
What does it mean to be "semi-permeable" and how does this property affect the movement of substances across a membrane?
Being "semi-permeable" means that a membrane allows certain substances to pass through while blocking others. This property affects the movement of substances across a membrane by regulating which molecules can enter or exit the cell. It helps maintain the cell's internal environment and allows for selective transport of essential nutrients and waste products.
What membrane components allow movement of non-polar substances across membrane?
Integral proteins allow movement of non-polar substances across membranes.
What is the movement of materials across a membrane that requires energy input called?
Active transport is the movement of materials across a membrane that requires energy input, typically in the form of ATP. This process allows cells to move molecules against their concentration gradient, ensuring the proper balance of ions and molecules inside and outside the cell.
What is the difference between diffusion and bulk flow in terms of the movement of substances across a membrane?
Diffusion is the movement of substances from an area of high concentration to low concentration, while bulk flow is the movement of substances in a fluid due to pressure differences. Diffusion occurs passively, while bulk flow requires energy.
What motion of particles across a membrane requires energy?
Movement across a membrane that does require energy is called active transport.
What kind of protein helps some substances cross the cell membrane?
Carrier proteins help facilitate the movement of certain substances across the cell membrane by binding to specific molecules and carrying them across. These proteins undergo conformational changes to transport the substances across the membrane.
One way cells maintain homeostasis is by controlling the movement of substances across the?
cell membrane
What is one way cells maintain homeostasis is by controlling the movement of substances across the cell?
membrane :]
How does the process of flux through a membrane contribute to the movement of substances across biological barriers?
The process of flux through a membrane helps substances move across biological barriers by allowing them to pass through the membrane from an area of high concentration to an area of low concentration. This movement is driven by the natural tendency of substances to reach equilibrium, where the concentration is the same on both sides of the membrane.
Does facilitated diffusion require a carrier or channel protein for the movement of molecules across the cell membrane?
Yes, facilitated diffusion requires a carrier or channel protein for the movement of molecules across the cell membrane.
How does osmosis diffusion play a role in the movement of substances across a semipermeable membrane?
Osmosis and diffusion are processes that allow substances to move across a semipermeable membrane. Osmosis is the movement of water molecules from an area of low solute concentration to an area of high solute concentration, while diffusion is the movement of solute molecules from an area of high concentration to an area of low concentration. Together, osmosis and diffusion help maintain balance and regulate the movement of substances across the membrane.
What is the direction of movement of various substances across the cell membrane for the cell's life activities?
excretion, transport and respiration
Active transport requires what?
Energy-requiring process by which substances move across the plasma membrane against a concentration gradient.
