A 14-year-old presents with polyuria, weight loss, and random glucose 320 mg/dL (normal fasting 70–99, 2-hour

The NP reviews pathology slides from a myocardial infarction and sees swollen cardiac cells with ruptured membranes and inflammation. This is uncontrolled

Two weeks after a heart transplant, a 49-year-old man presents with fever, arrhythmias, and rising cardiac enzymes. The NP thinks: This isn’t IgE or antibodies—it’s host T cells recognizing donor MHC and mounting a cytotoxic response. What is the underlying immune mechanism?

A 65-year-old man with COPD is admitted. ABG: pH 7.28 (normal 7.35–7.45), PaCO₂ 68 mmHg (35–45), HCO₃⁻ 27 mEq/L (22–26). The NP reasons: Low pH and high CO₂ means he’s retaining carbon dioxide from hypoventilation. Which is the primary mechanism?

A 23-year-old woman is hyperventilating during a panic attack. ABG: pH 7.51 (normal 7.35–7.45), PaCO₂ 28 (35–45), HCO₃⁻ 24 (22–26). The NP reflects: She’s blowing off too much CO₂

A 2-month-old with seizures and microcephaly is evaluated. The NP reviews genetic testing: This is PKU—an inherited enzyme defect where a single gene prevents phenylalanine metabolism. Which cellular process explains this?

A 36-year-old woman’s Pap smear shows cervical cells with irregular sizes, shapes, and nuclear changes. The NP reflects: This isn’t just normal adaptation—this looks disorganized and may be precancerous. Which process explains this finding?

Reviewing a biopsy, the NP notes: These cells don’t look like the original tissue anymore. They’ve lost differentiation and function—classic for cancer. What process is this?

Exponential smoothing is a time series forecasting technique using weights that decrease exponentially (1 − α) for each past period. More recent results are weighted more heavily. Based on the recursive function of exponential smoothing method,

University of Minnesota BOARD OF REGENTS POLICY Code of Conduct   Act Ethically and with Integrity. Ethical conduct is a fundamental expectation for every community member. In practicing and modeling ethical conduct, community members are expected to: act according to the highest ethical and professional standards of conduct; be personally accountable for individual actions; fulfill obligations owed to students, advisees, and colleagues; conscientiously meet University responsibilities; and communicate ethical standards of conduct through instruction and example. As a student of Decision Making in Operations class taught by Dr. Wenqing Zhang, I hereby certify that I will not discuss with any other students the contents and answers of this exam, and will make sure the exam is returned to the professor without any delay, in order to keep the examination process fair for everyone.  I certify this under the rules and regulations governing the Academic Integrity Policy of the University of Minnesota.   Have you read, understood and agreed upon this commitment statement?