Hemoglobin has tetrahedral structure containing four heme groups that surround a globin group.
Heme is ringlike organic compound also known as a porphyrin to which an iron atom is attached. There are four iron atoms that bind four oxygen atoms and transport them to tissues.
A eukaryotic cell that is involved in synthesizing large amounts of protein might be expected to have a lot of ribosomes. Ribosomes are dot like structure that are located around the rough endoplasmic reticulum. They are where proteins are made. There are also a few that are located in the cytoplasm. These ribosomes are the ones that give the endoplasmic reticulum a rough edge.
I think its D but I'm not sure
The answer is Psychoneuroimmunology.
This is the study pf the interactions among behavioral, neural and endoicrine, and immune processes. The brain communicates with the immune system through the autonomic nervous system and neuroendocrine activitry.
Answer:
Vitamins, minerals, protein, fats, and more.
Explanation: