Protein Classification

Which type of protein is insoluble in water and dilute salt solution, precipitated by saturation with (NH4 )2SO4 solution, and coagulated by heat?

Which type of protein is sparingly soluble in water and neutral solutions, precipitated by dilute Ammonium Sulphate, and coagulated by heat?

Which type of protein is insoluble in water and dilute salt solutions, soluble in dilute acids, and found in grains & cereals, thymus gland, pancreas, and nucleoproteins?

Which type of protein is soluble in water, salt solutions, and dilute acids, insoluble in Ammonium Hydroxide, and yields a large amount of Lysine & arginine?

Which type of protein is insoluble in all solvents, resistant to digestion, and found in connective tissues and hard tissues?