Biomedical Science
8 free practice questions shared by students. Answer them right here — no account needed.
A laboratory technician is found unconscious in a poorly ventilated garage. Arterial blood shows pH 7.39, PaO2 13.0 kPa (reference 10.7–13.3 kPa), and PaCO2 5.1…
Mechanisms of disease · common
A 68-year-old man develops sudden pleuritic chest pain and tachypnoea after prolonged immobility. Arterial blood gas analysis on room air shows pH 7.48, PaCO2 3…
Mechanisms of disease · common
A patient with profuse watery diarrhoea caused by enterotoxin receives an oral solution containing sodium and glucose. Before treatment, stool output is high an…
Foundations · common
An enzyme catalyses conversion of substrate S to product P. Without inhibitor, Vmax is 120 μmol/min and the Michaelis constant is 4 mmol/L. In the presence of i…
Foundations · common
A 35-year-old woman has palpitations and a 9 kg weight loss over 3 months. Her free thyroxine is 48 pmol/L (reference 10–22 pmol/L), TSH is less than 0.01 mIU/L…
Mechanisms of disease · common
A healthy adult receives an intravenous glucose load. Plasma glucose is 12 mmol/L (reference 3.5–7.8 mmol/L), the measured glomerular filtration rate is 120 mL/…
Mechanisms of disease · common
A 48-year-old woman has a new holosystolic murmur and exertional dyspnoea. Echocardiography shows a regurgitant volume from the left ventricle into the left atr…
Mechanisms of disease · common
A 62-year-old man undergoes left ventricular pressure-volume loop analysis during cardiac catheterisation. Before an intervention, his end-diastolic volume is 1…
Mechanisms of disease · common