All of them do, there are so many and they all contain differnet amounts of proteins. Buckwheat, Amaranth and Spring Wheat probably contain the highest amounts of Full Spectrum of Amino Acids
carbon, hydrogen, oxygen and nitrogen. proteins with the amino acid cysteine in them also contain sulphur. DNA proteins also contain phosphorus atoms.
Gluten are some kind of proteins which hide in all kinds of grains. When you're hesitating about eating something which may or not may contain gluten, just check the back of the package of the product you've have bought.
12 in each.
Grains are primarily carbohydrates with some proteins (such as gluten).
Lysosomes and the peroxisomes.
All proteins contain carbon, hydrogen, nitrogen, and oxygen. Many also contain sulfur, and cofactors can have all kinds of wacky stuff in them, like iron, manganese, cobalt, you name it.
Because some sedimentary rocks are made from different kinds of sediments.
The grainy kinds
Yes; grain synthesizes proteins to perform its biological functions.
They are not proteins, but they contain proteins.
Genes contain instructions for building proteins.
No. cells can contain more than just proteins