Mature red blood cells in the circulating blood are filled with
- lysosomes.
- hemoglobin molecules.
- nuclei and all other cellular organelles.
- smooth endoplasmic reticulum.
- mitochondria.
Answer: hemoglobin molecules.
Mature red blood cells in the circulating blood are filled with
- lysosomes.
- hemoglobin molecules.
- nuclei and all other cellular organelles.
- smooth endoplasmic reticulum.
- mitochondria.
Answer: hemoglobin molecules.