When x-rays pass through matter, which interaction results in x-rays being scattered in all directions 60 percent of the time?

A diabetic patient has an elevated blood sugar (545 mg/dL) and requires an injection of insulin. Your EMT partner is also a diabetic and administers insulin injections to himself throughout the day as needed. Although the Scope of Practice lists nothing about EMTs giving insulin, your partner administers the insulin injection to the patient. The patient's blood sugar comes down and her condition

improves. Which of the following is true? A) It was permissible for your partner to give the insulin since he is diabetic and knows how. B) Since the patient benefited from the insulin, your partner acted appropriately. C) Because your partner used the patient's insulin rather than his own, he cannot be reprimanded. D) Your partner violated the Scope of Practice and may have his certification revoked.

The most common chemical reagent used in North America to alter reagent red blood cells is the enzyme

a. bromelin b. ficin c. papain d. trypsin