Where is hemoglobin made?
Immature red blood cells produce hemoglobin at their ribosomes. Ribosomes are small organelles inside cells where proteins are assembled. This takes place in the red bone marrow found in the flat bones of the skull, pelvis, ribs, etc. (Human Anatomy and Physiology by R. Marieb). How can one identify the particular instar stages of a metamorphosing painted lady butterfly? Dr. Boris Kondratieff, CSU, explains that the instar of any particular caterpillar can be determined if variable conditions of food and temperature during growth are known. Larval Lepidoptera have 3-9 molts (instars) between the egg stage and the pupa. Generally, the width of the head capsule increases in a regular linear progression in successive instars by a ratio that is constant for a given species. Thus, the relative instar can be determined. What information can you give us about the redshift in stars? In Discovering the Universe, W. J. Kaufmann, III, discusses Christian Doppler, who noted in 1842 that the spectr
