Answer:
1. Insulin
2. Keratin
Explanation:
Proteins are one of the four biological molecules found in living systems. They are polymeric molecules made up of monomeric units called AMINO ACIDS. Proteins perform a wide variety of functions in the body ranging from enzymatic functions to structural roles.
Two examples of proteins found in the body are keratin, insulin. Keratin is a structural protein located in the skin, hair and nails while insulin is an enzymatic protein that aids in digestion.
Explanation:
Sand and iron fillings have the same size of particles.
It would be difficult to use a mesh to separate them. Also, sometimes , the iron filing clings well to the surface of the sand particles.
The best way to separate them is to use a bar magnet. The magnetic properties of the iron fillings will get it attracted to the bar magnet leaving the sand particles behind.
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Because water is able to dissolve in many things and most of this world is made out of water so no country or state doesn't have water, some have infected water with lead in them and others don't, but water can dissolve in salt, that's why they call it salt water and also tapped water where u put some mixtures in them to make it have flavor.
It can be quantified in cal
Answer:
In FeO iron atom exist as Fe+ cation but in Fe2O3 iron atom exist as Fe3+ cation.
Explanation:
Feo=Fe+ + O-
Fe2O3 =2Fe3+ + 3O2-
The difference in the charge of iron cation deeply affect the compound formulas because in FeO the Fe cation has 1 unit positive charge where in Fe2O3 the Fe cation has 3 units positive charge.
That"s why these two chemical compounds made up of similar atoms differ in their chemical formulas.