Answer:
The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.
Answer: Sensory neurons are neurons responsible for converting external stimuli from the environment into corresponding internal stimuli. Motor neurons are neurons located in the central nervous system (CNS); they project their axons outside of the CNS to directly or indirectly control muscles
First the cytoplasm then the mitochondria <span />
C. Deoxyribose sugar because the phospahte group, the nitrogen base, and ribose sugar is needed for ATP.
