Answer one of these: (600 words) Describe the process of soil formation and discuss how this illustrates the definition of biogeochemistry and why soil is such an important component of global biogeochemistry.  

Prostaglandins are produced by which of the following pathways?

Which of the following is referred to as a hormonal receptor?

You are called to the labor and delivery department to aid in the care of a 28-week-gestation infant. Soon after the baby is delivered, the decision is made to begin surfactant replacement therapy. The physician orders Infasurf® for the 2,000-g infant. What dosage would you prepare?

Which of the following medications could be administered to block salivary gland secretion?

What is one route by which methylxanthines can be administered to patients with COPD?

When a patient begins to have decreased response to albuterol during the administration of a continuous nebulizer treatment, the number of beta receptors have decreased due to which of the following processes?

A neonatal patient receiving mechanical ventilation has just been provided surfactant replacement therapy. The exhaled tidal volumes were 15 ml before administration and with the same pressure control ventilator, settings are now 35 ml. Which of the following provides the MOST likely explanation for this?

Lack of surfactant in premature infants of less than 34 weeks of gestation is a result of _____.

Methylxanthines are believed to cause bronchodilation by which of the following mechanisms?