Which of the biomolecules below includes a polydentate ligand called a porphyrin? hemoglobin chlorophyll cytochrome c carbonic anhydrase?

A17-year-old primigravida is admitted in early labor. her cervix is 2 to 3 cm dilated and 100% effaced. the fetus is cephalic, and the presenting part is at –1 station. her membranes are intact. the patient is holding her boyfriend's hand tightly and breathing rapidly with each contraction. she tells the nurse in a shaky voice, "i'm so nervous. i've never been in a hospital before. i don't know anything about labor or if i can do this." what is an appropriate nursing diagnosis for this patient?

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation

In which of the following relationships is one organism always benefited while the other organism is always harmed