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A dense area in a cell that contains nucleic acids is?
Nucleus
What organ contains structures called villi?
Villi (singular villus) are finger-like structures that are found on the inner wall of small intestines. Villi function to absorb glucose, amino acids and water soluble vitamins by diffusion into the blood capillaries in the villi.
How is a phospholipid is similar to a fat?
They are both esters. Triglycerides have three fatty acids and one glycerol, while phospholipids have two fatty acids and one glycophosphate.
Why might a glass survive a fall on the carpet but not on a concrete floor?
The carpet is made of material that spreads the shock across the surface area of a greater distance than concrete. Concrete is more dense than carpet making it susceptible.
Would the piece of wood float in water?
An educated guess would be yes They used to build ships from it. But I suppose it all depends on how large the amount of wood is, if the wood is treated i.e with some sort of varnish to stop it absorbing water and the surface area of wood as well. Hope this helps as I was wondering myself for a while
