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.
Adenine and guanine are purine bases found in both DNA and RNA. Cytosine is a pyrimidine base found in both DNA and RNA. Thymine and uracil are pyrimidine bases found in only DNA or RNA, respectively. These five nitrogenous bases are all planar molecules, meaning that they are fairly flat and rigid.