what is blood composed of
Making the world better, one answer at a time. Blood is composed of: Red cells:are relatively large microscopic cells without nuclei. In this latter trait, they are similar to the primitive prokaryotic cells of bacteria.Red cells normally make up 40-50% of the total blood volume.aking the world better, one answer at a time. Blood is composed of: Red cells:are relatively large microscopic cells without nuclei. In this latter trait, they are similar to the primitive prokaryotic cells of bacteria.