Yes there is protein in egg whites.
Very little starch. Mostly protein and water.
No, for example, egg whites are packed with protein. 1/4 Cup of Egg whites is about 30 calories and contain about 7 grams of protein
The white portion of 1 medium sized egg contains roughly 6 grams of protein.
No! It is only protein which is VERY good for you.
Raw egg whites..
Yes, egg whites do contain protein. 12 a day might be too many. The average person should have two, maybe three (if in an omlette, or something) egg whites / eggs a day.
Egg whites: Almost all the energy in egg whites comes from protein, whereas honey is essentially only sugar and no protein. It would take one cup of honey to have the same amount of protein as 2 teaspoons of egg white (that's a third of the white of one egg)... So honey is not a source of protein, it's a source of sugar. Egg whites are an excellent source of carb-free and fat-free protein.
raw egg whites
Egg whites contain protein and amino acids, but do have some fat as well. Eating the whole egg should be fine, in moderation.
One large egg contains approximately 3 grams of protein. This is not significant compared to a serving of beef or chicken.
Denaturation
The Biuret test.