A patient is found to have an antibody to an antigen that is…

A patient is found to have an antibody to an antigen that is present in [x] % of the population and a second antibody to an antigen found in [y] % of the population. The physician has ordered [z] units on this patient. How many units must you test to find the [z] units that are negative for the antigen. (use normal rounding).

In a speech about valley fever, a potentially deadly disease…

In a speech about valley fever, a potentially deadly disease that has reached serious proportions in several southwestern states, a speaker said:After being plagued by asthma attacks in Hawaii for six years, Lori Crown hoped to find relief by moving to the dryer climate in Bakersfield, California. A few months after arriving in Bakersfield, Crown was suffering from severe headaches, swollen feet, painful bumps on her hands and legs, and a prolonged fever. The diagnosis—valley fever. To combat the disease, Crown has to take fluconazole, an antifungal drug that costs $685 for a one-month supply of pills. Although the drug helps, Crown still gets painful headaches, frequent fevers, and debilitating fatigue. “It’s so frustrating,” Crown says. “One day I’ll feel fine, then I’ll be in bed for the next three.” Most days she wishes she had stayed in Hawaii.According to your textbook, what kind of supporting material is used in this statement?

Sara sets up an experiment to test the rate of the diffusion…

Sara sets up an experiment to test the rate of the diffusion of 2 unknown molecules, blue and red. In petri dish 1, Sara adds an unknown concentration of the blue molecule. In petri dish 2, Sara adds an unknown concentration of the red molecule. Every 10 minutes, for 30 minutes, Sara measures the diameter of the pool in each dish to produce the following data table: 10 minutes 20 minutes 30 minutes Blue 8 mm 12 mm 14 mm Red 10 mm 15 mm 17 mm Based on this data, Sara concludes that the Red molecule must be smaller than the Blue molecule. Is it reasonable to make this conclusion? Explain why or why not in a few sentences.