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What else can I help you with?
Why could glucose could pass through the visking tubing?
Because it has starch in it.
Why is glucose allowed to pass through a semipermeable membrane and not starch?
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.
Which nutrient can pass through a dialysis membrane?
Molecules that are small enough to fit through the membrane pores. Water molecules, sodium, potassium, and chloride can pass through dialysis membrane because they are small in size. Proteins have a bigger size than the pores of the dialysis membrane so they don't pass through it, they stay in the blood plasma.
What statement explains why oxygen molecules easily diffuse across a cell membrane which glucose molecules do not?
Glucose is too big to pass throught.
Does the size or the speed of a molecule determines whether it can pass through the pores of a membrane?
The speed doesn't necessarily determine the permeability, but the size does. Smaller molecules such as O2 can easily enter the cell while CO2 leaves the cell. There are other criteria that also determines whether a molecule can pass through the plasma membrane such as its solubility. Fat soluble molecules such as steroids can easily pass through the membrane.
Why did the starch not enter the beaker?
The starch did not enter the beaker because the membrane of the dialysis tubing is selectively permeable, allowing only smaller molecules, like glucose and water, to pass through. Starch molecules are too large to pass through the pores of the membrane, thus they were unable to enter the beaker.
State one reason why some molecules can pass through a certain membranebut other molecules can not?
Molecules can pass through a membrane if they are small enough to fit through the pores or channels in the membrane. Larger molecules may not be able to pass through due to their size, charge, or inability to interact with the membrane components.
Can glucose pass through a membrane?
Dialysis membranes are typically not permeable to sucrose. Removing sugar from the blood can be dangerous as it can lead to hypoglycemia. Sugar molecules are too large to pass through dialysis membranes.
Waste pass through pores in the cell membrane by a process called?
Diffusion.
Why does glucose pass through the membrane faster then mannose and galactose?
Glucose passes through the membrane faster than mannose and galactose because glucose is the primary energy source for many cells and is recognized and transported more efficiently by glucose transporters present on the cell membrane. Mannose and galactose have different transporter proteins with lower affinity and therefore pass through the membrane at a slower rate.
The process by which glucose can pass through a cell membrane by combining with special carrier molecules is called?
The process by which glucose can pass through a cell membrane by combining with special carrier molecules is called facilitated diffusion. In this process, carrier proteins aid in the movement of glucose across the membrane down its concentration gradient.
Why are some substaces allowed to pass through a membrain and some are not?
Its because the membrane is Selectively Permiable. Since the openings in the membrane, called pores, have a certain size, only certain substances can pass through.
