Hurry
what do nucleic acids and phospholipids have in common?
they are both important cell signaling molecules
they both contain phosphate groups
they are both important for all cell structure
they are both important energy sources

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Which of the following describes a negative feedback loop? when the heart rate is too high, the body sends hormones that continually increase the heart rate higher. when a pregnant woman is in labor, the body sends hormones that increase the intensity of contractions, which then increases the secretion of the same hormones. when blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows. when a person is jogging, the body sends hormones that continually decrease the rate of oxygen supply to the legs.

Hemoglobin is a proton that carries oxygen around your body what is hemoglobin made from