The nucleic acid that contains the genetic instructions for life is:

A mother brings her 3-year-old son into the aid room. She says he has a low grade fever and seems to be having slight difficulty breathing. Which of the statements by the mother would make you think the child may have croup?

a. "Last night, he had a barking-like cough." b. "There are times when he continually drools." c. "When I turn the air conditioner on, he gets more short of breath." d. "He has a rash on his chest."

When a patient inhales while connected to a water-sealed spirometer, the bell moves _____ and the pen moves _____

a. Up; up c. Down; up b. Up; down d. Down; down