0
Why is glucose allowed to pass through a semipermeable membrane and not starch?
Wiki User
∙ 13y ago
Whether molecules are able to pass through the membrane depends on the size of the molecules. Smaller ones can, and larger ones cannot. Glucose can pass through a cell membrane because it is a monomer, which is a smaller molecule than the polymer molecules of starch.
Wiki User
∙ 9y ago
Anonymous
Wiki User
∙ 11y agoa selective permeable membrane only allows small molecules to pass through it such as Glucose, where as a starch is polymer ( a strand of molecules) which would make it too big to go through.
Wiki User
∙ 13y agoGlucose is a monosaccharide, making it small enough to pass through the small pores of semi permeable membranes. Starch is a polysaccharide, making it too big....:)
Add your answer:
Earn +20 pts
Could the skin be a semipermeable membrane?
no skin couldn't be a semipermeable membrane because it doesn't allow any substances to pass through it...
The statement below refers to a structure of the cell oxygen diffuse through this structure but sodium ion may need active transport which structure is this statement most likely referring to?
a semipermeable membrane
The rate of diffusion through a semipermeable membrane will be lowest when?
The rate of diffusion through a semipermeable membrane will be lowest when temperatures are low. Lower temperatures decrease the energy of the molecules, which in turn decreases the rate of diffusion.
Does the cell membrane let things pass through it?
Yes the cell membrane lets things past through it. The cell wall does not allow things to pass through.
Why does glucose pass through the membrane faster then mannose and galactose?
There are glucose carriers in the plasma membrane
What moves through a semipermeable membrane into an area of what concentration?
Water moves through a semipermeable membrane from an area of high to low concentration. This is called osmosis.
Could the skin be a semipermeable membrane?
no skin couldn't be a semipermeable membrane because it doesn't allow any substances to pass through it...
The diffusion of water through a semipermeable membrane is?
Osmosis...
Oxygen diffuses through what structure?
A semipermeable membrane.
What is this statement most likely referring to Small nonpolar molecules may pass through this structure but others require a protein channel?
Small non-polar molecules may pass through a a semipermeable membrane but others require a protein channel.
The statement below refers to a structure of the cell oxygen diffuse through this structure but sodium ion may need active transport which structure is this statement most likely referring to?
a semipermeable membrane
Can an ATP molecule can pass through semipermeable membrane?
your fat cow
The rate of diffusion through a semipermeable membrane will be lowest when?
The rate of diffusion through a semipermeable membrane will be lowest when temperatures are low. Lower temperatures decrease the energy of the molecules, which in turn decreases the rate of diffusion.
A membrane that allows some but not all materials to pass through it is called .?
This sort of membrane is said to be semipermeable.
What is the cell membrane which means that some substances can pass through it while others can't?
Semipermeable membrane.
What is the difference between filtration and ultrafiltration?
Filtration is done by a filter paper, while ultrafiltration is done by a semipermeable membrane. Solute particles that are 1-200nm in diameter can pass through filter paper, but cannot penetrate the semipermeable membrane. Only particles with a diameter less than 1nm can pass through the semipermeable membrane.
Does the cell membrane let things pass through it?
Yes the cell membrane lets things past through it. The cell wall does not allow things to pass through.
