SMALL INTESTINE
BODY OF STOMACH
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
amylose
|
|
amylopectin
|
|
glucose
|
|
triglyceride
|
Detailed explanation-1: -Visking tubing is an artificial selectively permeable membrane: smaller molecules like water and glucose pass through its microscopic holes. larger molecules like starch and sucrose cannot pass through it.
Detailed explanation-2: -The concentration of water outside the visking tubing is higher than the concentration of water inside the visking tubing. Water moves in through the pores in the selectively permeable membrane by osmosis. This increases the pressure inside the visking tubing causing the solution to move up the capillary tube.
Detailed explanation-3: -Visking tube is synthetic semi-permeable membrane. It allows water and tiny molecule to pass across it but do not allow large molecules like proteins and DNA.
Detailed explanation-4: -Starch does not pass through the synthetic selectively permeable membrane because starch molecules are too large to fit through the pores of the dialysis tubing. In contrast, glucose, iodine, and water molecules are small enough to pass through the membrane.
Detailed explanation-5: -This resource describes a visual way of demonstrating diffusion through a semi-permeable membrane. It can be used as a model for the human gut or for investigating the effect of amylase on starch. Two standard tests are used.