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Energy is only necessary for diffusion if the particles are being moved across the membrane against the gradient. ATP is necessary for this active transport as particles are moved from low concentrations to higher concentrations across the membrane.
This is because passive transport, which does not use energy, only works to move particles down their concentration gradient.
Ex. Such active transport is used in neuron cells to have a different charge inside and outside of the cell so that it can relay electric signals.
What else can I help you with?
What requires vesicles for transportation across cell membrane?
It is a type of active transportation.So energy is needed.
How is passive transport different then active transport?
Passive transport does not require energy input and relies on the concentration gradient to move molecules across the cell membrane. Active transport requires energy (usually in the form of ATP) to move molecules against the concentration gradient.
What is the term for particles of light that provides the energy needed for photosynthesis?
Photons is the term for the particles of light that provide the energy needed for photosynthesis.
What is the term for the particles of the light that provides the energy needed for photosynthesis?
Photons is the term for the particles of light that provide the energy needed for photosynthesis.
What is the term for the particles light that provide the energy needed for photosynthesis?
Photons is the term for the particles of light that provide the energy needed for photosynthesis.
What is the differece between passive and active transport?
Active transport is the movement of molecules across a membrane requiring energy to be expanded by the cell. ACTIVE TRANSPORT REQUIRES ENERGY. Passive transport is diffusion across a membrane requiring only random motion of molecules with no energy expanded by the cell. PASSIVE TRANSPORT REQUIRES NO ENERGY.
What is the movement across a membrane with the help of ATP?
Active transport is the movement of molecules across a membrane with the help of ATP, which provides the energy needed for the transport process. This allows substances to move against their concentration gradient, from an area of lower concentration to an area of higher concentration.
Does group translocation requires energy?
Yes, group translocation is an energy-requiring process in which a molecule is chemically modified during transport across a membrane. Energy is needed to drive the modification of the molecule, ultimately allowing it to be transported into the cell.
What type of transport takes place when a protein allow an ion to enter a cell but no additional energy is needed to make this happen?
There are two types of transport that use channel proteins.The first type does not require energy to move the substance across the cell membrane.This is called facilitated diffusion. Energy is not required because the particles move along the concentration gradient, or the difference between the high concentration of particles outside the membrane and the low concentration of the particles inside.The second type of transport needs energy because it runs against the concentration gradient. This process is called active transport.
How much energy is needed to cause Action Potential in mv?
The energy needed to cause an action potential in a neuron is about 70-75 millivolts. This voltage change is generated by ion movements across the neuron's cell membrane, specifically involving sodium and potassium ions.
What is the term for the particles of light that provide the energy needed for photosynthesis?
Photon
How does the cell membrane support cells in getting needed nutrients?
Cell membranes have a number of ways that needed nutrients can pass through. The first and easiest way is by diffusion where certain particles are able to pass through the membrane directly where the are in short supply. Other particles, because they don't mix well with the lipids that make up the membrane can pass through certain protein channels in a process called facilitated diffusion. In a closely related process to diffusion where particles aren't able to cross the membrane but water can, osmosis takes place. Sometimes when cell need to move nutrients into already crowded areas they use energy in a process called active transport to kind force particles across the membrane where they don't want to go. A very special type of active transport called phagocytosis occurs when a cell wants to take in particles that are simply too large to pass through the membrane so the membrane actually stretches out and engulfs the particle in a vesicle where it can be dismantled into smaller components inside the cell. I hope that helps!
