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Through what type of proteins does active transport occur?
A carrier protein (as opposed to a channel protein). An example of a carrier protein is the Na+/K+ pump.
What is needed to facilitate active absorption?
a protein carrier and energy
What type of organic molecule is needed for active transport?
Carrier Protein
What process involves the use of specific carrier molecules?
two processes requiring the use of protein carrier molecules?
Does active transport require a membrane?
Active transport does require a carrier protein. Each protein is specific to one particular molecule.
Through what type of proteins does active transport occur?
A carrier protein (as opposed to a channel protein). An example of a carrier protein is the Na+/K+ pump.
What is needed to facilitate active absorption?
a protein carrier and energy
What type of organic molecule is needed for active transport?
Carrier Protein
What process involves the use of specific carrier molecules?
two processes requiring the use of protein carrier molecules?
How do carrier protein recognize substances to transport in active transport?
substance to pass
Primary active transport involves a conformational change in the carrier protein The most immediate stimulus for this is?
phosphorylation (binding of the carrier protein to a phosphate group) within the cell
Is carrier proteins passive transport or active transport?
Carrier proteins can use active or passive transport depending on what type of carrier protein it is (meaning what the protein transports). The form of passive transport that they use is facilitated diffusion. An example of active transport is the Sodium Potassium pump. Active transport requires ATP. Facilitated diffusion is used to transport polar molecules and ions that cannot directly cross the cell membrane. Facilitated diffusion doesn't require energy.
Does active transport require a membrane?
Active transport does require a carrier protein. Each protein is specific to one particular molecule.
What process changes the shape of transport proteins when a particle binds with it?
Carrier Proteins. Some don't require ATP (Facillitated transport) and some do require ATP (Active transport) to change shape.
What is active absorption?
requires the input of energy and a carrier protein to move nutrients across a concentration gradient
How does as large particle leave a cell using active transport?
It requires energy, and a carrier protein. The large particle binds to the carrier protein on the inside of the cell. The protein then changes conformation, thus moving the particle to the outside, where it is dropped off by another conformational change in the protein.
Is a carrier protein an active transport or a passive transport?
They are used in both, in passive the molecules move in , then change the shape then leave and the entering and leaving are both by diffusion. in active transport molecules move in by diffusion, change the shape of the carrier protein, then because theyre moving into the cell where the molecule is in higher concentration energy is required to push the molecules out of the carrier proteins, this energy comes from ATP which is supplied to the carrier proteins.
