The predominant cells in blood are the red blood cells (RBC) which contains a protein called hemoglobin. Hemoglobin is the principal determinant of the color of blood. Arterial blood and capillary blood are bright red, as oxygen imparts a strong red color to the heme group.
RNA is assembled as a chain of nucleotides, that is usually  single-stranded. In eukaryotic cells, it can be found in the  nucleus and cytoplasm. Edit. Share to: Lsilvstew. 2,538 Contributions. Answered Most Recently. In Genetics.
However, there  are three different types of RNA including:   mRNA (messenger RNA) carries messages coded in DNA from  the nucleus or nucleoid to the site of protein synthesis  (ribosomes) in cytoplasm.  rRNA (ribosomal RNA) is found in the structure of  ribosomes, together with ribosomal proteins.