Karteikarten
Biology 2.1.5 Simple/facilitated diffusion and active transport
Karten in diesem Stapel (12)
- 1Define diffusionThe net movement of molecules (or ions) from a reigon of higher concentration to a reigon of lower concentration
- 2What is simple diffusion?Movement through the phospholipid bilayer
- 3What molecules can pass through the phospholipid bilayer through simple diffusion?Small or lipid soluble (non-polar molecules)
- 4Are lipid soluble molecules polar or non-polar?Non-polar
- 5Are water soluble molecules polar or non-polar?Polar
- 6What is facilitated diffusion?Movement of ions or molecules through a channel/carrier proteins
- 7What can pass through channel proteins?Specific ions such as sodium, calcium
- 8,What can pass through a carrier protein?Specific, large, polar molecules such as glucose or amino acids
- 9How do carrier proteins work?A specific molecule binds to the protein, it changes shape and allows it to cross the membrane
- 10Define active transportMovement of molecules against the concentraion gradient, from low to high concentration
- 11How do the molecules pass through the membrane during active transport?Carrier proteins
- 12What three factors effect active transport?Temperature
Oxygen (used for ATP)
Poisen (stops respiration)
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- Beschreibung
- A level Biology (2.1.5 Biological membranes) Karteikarten am Biology 2.1.5 Simple/facilitated diffusion and active transport, erstellt von Sam Gunnell am 07/03/2019.
- Erstellt von
- Sam Gunnell
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- 340
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