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What is resultant torque of a couple?
if like parallel forces and unlike parallel forces acts on body at same time what is their resultant force and resultant torque
Which type of light wave acts like a mirror?
No light wave ever acts like a mirror.
A see-saw acts like what?
A see-saw acts (or is an example) as a Lever.
What object acts like a nucleolus?
brain
What layer of the atmosphere acts like a magnet and what does it attract?
Ionosphere
What part of our bodies acts like a visking tube?
You may be thinking of the blood capillaries. Like visking tubing, their walls are able to let substances diffuse in and out. This is also true of the cell membranes. However both of these are much more permeable than visking tubing. The kidney contains semi-permeable membranes which allow urea to pass through but not other substances such as proteins.
How does a visking tubing differ from a cellmembrane?
Visking tubing contains millions of tiny holes which only let small molecules, like water, diffuse through. Large molecules, such as starch, cannot cross the membrane. We say it is partially permeable (permeable means a substance is able to pass through). This is similar to a cell membrane. Visking tubing can therefore be used as a model of a cell.
Can starch pass through visking tubing?
We supply Visking tubing and offer the following information: The molecular weight cut-off of this product is 12000 - 14000 daltons. This means in theory that molecules larger in MW than this will not pass through the membranes and ones smaller will. Starch has a very high molecular weight and the tubing is often used to illustrate the effect of enzymes breaking starch down into to simple sugars. Starch therefore should not pass through the membrane wall. The user of this product should be aware that this is a nominal cut-off and long thin molecules above the 14kd cut-off may go through and globular molecules below may be retained. In addition the charge on a molecule may effect the rate of transfer across the membrane.
Is the Visking tubing a partailly permeable membrane and why?
Yes, it is a partially permeable membrane. It allows certain substances like glucose and water molecules to diffuse through but not large molecules like starch and sucrose. Selectively permeable.
Where to find visking tube?
Visking tubing is made of cellulose and often used as a model gut in class room experiments.
What in the body acts like a protein?
Mitochondria
What part of the cells do we say acts like the skin on your body?
The cell membrane acts like the skin on your body because it coats the outside of the cell and protects the organelles.
How is a visking tube not like a real small intestine?
it is different because widts of the tube and intestine may vary
What acts like a window screen on or in the human body?
cows!
What part of the body acts like a cage what does it protect?
The ribcage acts as a cage and protects your vital organs.
What role does myelin play in the body?
It acts like an electrical insulator.
How the human body acts like a zoo?
what's up? it's pineapple.
