What allows fetal hemoglobin to remove oxygen from maternal hemoglobin?
A. Fetal hemoglobin has an extra heme group.
B. Oxygen is more soluble in fetal blood than maternal blood.
C. Fetal hemoglobin has a higher affinity for oxygen than does maternal hemoglobin.
D. There are two times more fetal than maternal hemoglobin molecules in the placenta.
E. Fetal hemoglobin molecules are much larger than maternal hemoglobin molecules.
C. Fetal hemoglobin has a higher affinity for oxygen than does maternal hemoglobin.
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A. Abscisic acid B. Gibberellic acid C. Jasmonic acid D. Salicylic acid E. Ethylene
Once uterine contractions have begun, the female body releases several hormones that act in a positive feedback loop. The purpose of this feedback loop is ________.
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The primary site of protein assembly within eukaryotic cells is the:
A) capsule. B) cytoplasm. C) cell wall. D) ribosomes. E) flagellum.
__________ are needed in the diet as components of teeth and bone, as parts of certain enzymes, for normal muscle and nerve function, and for water balance.
a. Starches b. Fats c. Minerals d. Nucleic acids e. Vitamins