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.
RNA-single chain structure-contains ribose sugar-bases are adenine, cytosine, guanine and uracil-RNA is found in the nucleus and cytoplasm-there are three different types of RNA-messenger RNA (mRNA); ribosomal RNA (rRNA); and transfer RNA (tRNA).