How do passive transport and active transport differ? is osmosis an example of passive transport or active transport? why?

In what for do plants utilize nitrogen? why do they need nitrogen?

Why would a drug the damages capsids treat a viral infection

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.