A 23-year-old man visits his physician with symptoms of abdominal discomfort and diarrhea. The man states that the diarrhea has been present off and on for approximately 6 weeks. He especially notes symptoms after a breakfast of wheat cereal and milk. His physician considers the possibility of two disorders, Celiac disease and lactose intolerance. What  is one laboratory test that would diagnose Celiac disease? What is one laboratory test that would diagnose lactose intolerance?

An example of an uncontrollable preanalytical variable would be

The primary structure of a protein is the

Image #1 (Questions 1 – 6)

Two charges are separated by a distance r. If the distance is doubled, the electric force becomes:a. Twice as large  b. Four times as large  c. One-fourth as large  d. One-half as large

When a capacitor in an RC circuit is fully charged, the current is:a. Maximum  b. Half  c. Constant  d. Zero

The total resistance in a parallel circuit is:a. The sum of all resistances  b. The average resistance  c. Less than any individual resistor  d. Always 0

Current is the rate of:a. Charge flow  b. Voltage increase  c. Energy conversion  d. Resistance buildup

Capacitors in series combine as:a. C = C₁ + C₂ + …  b. C = C₁C₂  c. 1/C = 1/C₁ + 1/C₂  d. C = 1/C₁ + C₂

What is the direction of the electric field produced by a positive point charge?a. Away from the charge  b. Toward the charge  c. Perpendicular to the charge  d. In circles around the charge