Final answer:
Blood plasma is a yellowish liquid that contains many dissolved substances and blood cells. It contains plasma proteins, metal ions, and hormones, but it is not the color of red wine.
Step-by-step explanation:
Blood plasma, the fluid part of blood, is a yellowish liquid that contains many dissolved substances and blood cells. It is different from red wine in terms of color. Blood plasma contains plasma proteins, metal ions (salts), and hormones. However, it does not solely consist of plasma proteins and does have other components like metal ions and hormones in it.