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A 15-year-old boy has brief episodes of uncontrolled right arm jerking lasting 30 seconds without loss of awareness. EEG shows focal epileptiform discharges in the left frontal lobe. His diagnosis is most consistent with:

A 55-year-old female with a history of heavy smoking presents with progressive shortness of breath. She has barrel chest, pursed-lip breathing, and distant breath sounds. Pulmonary function tests reveal increased total lung capacity and decreased FEV1/FVC ratio. What underlying lung change is most likely responsible?

A patient experiences seizures that start in one specific area of the brain. What type of seizure is this? 

During an experiment, a scientist uses a spreadsheet to record temperatures. This action corresponds to which of the following steps in the scientific method?

A culture of bacteria doubles in number over 24 hours. This demonstrates which characteristic of life?

Which is a major difference between eukaryotic and prokaryotic cells?

Which statement distinguishes facilitated diffusion from active transport?

Bears, starfish, and toads belong to the same________.

If in an experiment, two groups of plants are exposed to different amounts of a pesticide and a third group is not, what is the third group called?

A patient is brought to the emergency room after collapsing during a long, hot hike. The patient is dehydrated, with symptoms including dizziness, low blood pressure, and dry skin. The nurse must choose one of the following IV solutions to help restore the body’s fluid balance: 0.9% NaCl (Normal Saline) – Isotonic 0.45% NaCl (½ Normal Saline) – Hypotonic 3% NaCl – Hypertonic Based on this information and what you’ve learned about osmosis, tonicity, and the movement of water across cell membranes, answer the following questions: Predict how red blood cells would respond if a patient were given each of the following IV solutions: 0.9% NaCl (isotonic), 0.45% NaCl (hypotonic), and 3% NaCl (hypertonic).In your answer, include the direction of water movement across red blood cell membranes and describe how the cells would respond in each case. Which IV solution would be the safest and most effective for this patient? Explain your reasoning based on osmosis and tonicity.  Why is understanding tonicity and IV fluid selection important for anyone entering a healthcare or medical field? Your answer should be a paragraph of at least 4–5 sentences and address all parts of the question.