Biology, 13.11.2019 19:31 liliaboop2012
Identify the true statements regarding the heme group of myoglobin and hemoglobin. the cooperativity of oxygen binding in hemoglobin arises from a shorter fe−o2 bond length in the t state compared to the r state. hemoglobin contains four heme groups. the globin chains of myoglobin and hemoglobin prevent the oxidation of fe2+ to fe3+ , which irreversibly binds oxygen. the iron in the heme group can form six bonds. the fifth is with an imidazole ring of a histidine, and the sixth is with oxygen. a heme group contains four pyrrole rings, which are linked via methene (methine) bridges. the heme group is conjugated. the r state of hemoglobin has greater affinity for o2 than the t state because the iron atom is in the plane of the porphyrin ring.
Answers: 1
Biology, 21.06.2019 23:50
Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?
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Biology, 22.06.2019 06:50
How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes
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Identify the true statements regarding the heme group of myoglobin and hemoglobin. the cooperativity...
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