0
What inorganic substance aids in the diffusion of gases through a cellular membrane?
Wiki User
∙ 12y ago
hello <----- You are really helpful, douche....
The ACTUAL answer is water
Wiki User
∙ 12y ago
Wiki User
∙ 12y agowater
Add your answer:
Earn +20 pts
What role does a cellular membrane play in passive transport?
hahahah That's not even an answer. They act as barriers to the diffusion of certain substances. ---------------------------------------------------------------------------------- Better Answer: Well actually the membrane can facilitate diffusion (such as that of larger macromolecules) through channel proteins.
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 substances would most likely require a protein to facilitate its diffusion across a cell membrane?
Quick answer: glucose Explanation: Any substance that the membrane selects against requires integral proteins to cross the membrane. B/c the lipid bilayer is selectively permeable, not all substances can pass through it by diffusion or osmosis. However, when the cell requires a substance that it's membrane does not easily allow to pass through, it must enter via the proteins in the membrane. They can either be carrier proteins or protein channels depending on the substance. One example of a substance which requires facilitated diffusion is glucose.
Which of the following forms of cellular transportation helps human cells maintain their sodium and potassium concentration?
diffusion
Which solution might a cell maintain homeostasis through diffusion?
Diffusion allows waste chemicals to move down a concentration gradient. The chemicals will move from an area of high concentration (inside the cell) to areas of lower concentration (outside of the cell) via the cell membrane. This is also an example of passive transport.
What is the difference of osmosis and diffusion?
Diffusion is the process by which a substance passes through a membrane passively.Osmosis IS diffusion, just the substance involved is water.
Osmosis is the diffusion of what substance through a cell membrane?
Water
When does diffusion occur across a cell membrane?
Diffusion across a cell membrane occurs when concentrations of a substance are higher either inside or outside the cell.
What substance crosses the cell membrane by facilitated diffusion?
a sodium ion
The movement of material through a cell membrane without using cellular energyg?
"diffusion"
How are osmosis and diffusion different?
Diffusion is the net movement of a substance through a membrane from a higher concentration to a lower concentration. Osmosis is the diffusion of water.
What role does a cellular membrane play in passive transport?
hahahah That's not even an answer. They act as barriers to the diffusion of certain substances. ---------------------------------------------------------------------------------- Better Answer: Well actually the membrane can facilitate diffusion (such as that of larger macromolecules) through channel proteins.
What is facilitated diffusion across the phospholipid membrane?
Facilitated diffusion is the movement a substance from high concentration to low concentration across a membrane through a transporter protein or channel
What happens in simple diffusion?
In simple diffusion, a substance passes through a membrane without any outside intermediary. The rate of diffusion is based on the force exerted..
How would you define cellular diffusion?
Cellular diffusion is when molecules in the cell go from high concentration to low concentration to balance out the concentration. Small molecules can diffuse through the cell membrane, but larger molecules need the help of proteins. This is call facilitated diffusion.
What is one way that osmosis is the same as diffusion?
Osmosis and diffusion are the same because they are both ways that molecules are carried across the cellular membrane with the concentration gradient.
What is the difference between simple diffusion and facilitated diffusion?
It doesn't. (answer by RRU member Cyrem)
