0
In which direction do channels using facilitated diffusion work?
Wiki User
∙ 12y ago
Left
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What is the role of transport proteins within the plasma membrane?
The membranes around cells and even around some organelles do not allow much to go in and out. If the substance is too large, it can't move in without help. If the charge is 'incorrect', it needs help as well.
In what direction do you cut when using a sharp instrument?
Cut away from you body.
In which direction should you apply a force if you want to do the greatest amount of work?
It depends on the kind of work you want done and whether you're using any simple machines. In case you aren't using any simple machines and you are applying force directly, it is best to apply force in the direction of motion desired.
How do you calculate weight on an incline?
An incline does not have a weight associated with it.
Pulling down on a rope to hoist a sail on a sailboat is an example of a machine?
yes, you would be using a pulley which is a type of simple machine. It is a type of machine that is changing the direction over which a force is exerted.
What is a passive transport using carrier protiens?
Facilitated diffusion
Cell must expend energy to transport substances using?
Facilitated diffusion.
What cell must expend energy to transport substances using?
Facilitated diffusion
What are 2 ways that substances across the cell membrane without using energy?
simple diffusion, facilitated diffusion, and osmosis (water)
In facilitated diffusion do molecules move down concentration gradient?
Without using the cell's energy
Substances that move across a cell membrane without using energy?
by simple diffusion, facilitated diffusion, and osmosis.
What is the process which cells use to bring in or take out substances using energy?
You are probably thinking of facilitated diffusion but endocytosis also used energy. The difference is in the size of the item that is being taken in. Endocytosis involves larger items while facilitated diffusion involves very small items like ions.
Is facilitated diffusion type of active transport?
Facilitated diffusion is passive transport as no energy is used, and a protein channel is all that's required. After that it is simple diffusion down a concentration gradient. Anything with the word diffusion in it is passive transport. Diffusion is just the principle of passive transport.
What does facilitated diffusion do in a cell?
It allows for the flow of substances which are normally too large to pass through the cell membrane. Like active transport, it accomplishes this using channel proteins coded for each specific substance (sugar, for example). Unlike active transport, facilitated diffusion only works WITH the osmotic pressure gradient, not against.
How is the cell membrane facilitated diffusion transported?
In Facilitated diffusion materials are transported across the plasma membrane without using up any energy. Plasma membranes is made up of phospholipid bilayers consisting of proteins which help in the transportation of larger materials.
Glucose molecules cross the cell membrane by means of?
The answer is that glucose crosses a semi-permiable membrane by the process of facilitated diffusion. It cannot be by osmosis, because osmosis is the moving of only water from a concentration of high to low.
What is one example of substance using facilitated transport?
EXAMPLES OF FACILITATED DIFFUSION IN THE HUMAN BODYExchange of oxygen and carbon in the alveoli of the lungsThe absorption of glucose, fructose, amino acids in the small intestines
