| 1 |
How might using gold nanoparticles in electrochemical sensors enhance early-stage disease detection?
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2. By increasing surface interactions for more accurate biomarker capture |
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Gold nanoparticles (AuNPs) have a large surface area and excellent biocompatibility. |
Gold nanoparticles are widely used in electrochemical biosensors because they provide a high surface-to-volume ratio. |
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| 2 |
Which of the following best explains how label-free electrochemical sensors support point-of-care medical diagnostics?
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3. They provide direct measurement of target molecules with minimal preparation |
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Label-free electrochemical sensors do not require any chemical labels or fluorescent tags to detect target molecules. |
Label-free sensors work by directly detecting changes in electrical signals. |
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| 3 |
Why is electrochemical transduction considered advantageous over optical transduction in medical diagnostic sensors?
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2. It is more compatible with smartphone integration for remote analysis |
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Electrochemical transduction is highly suited for miniaturized and portable diagnostic devices, making it ideal for smartphone-based or remote analysis. |
Electrochemical sensors work by converting biochemical interactions into electrical signals |
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| 4 |
Which action would most effectively increase specificity in a sensor designed to detect a single disease biomarker?
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3. Functionalizing the electrode with disease-specific aptamers |
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Aptamers are short, single-stranded DNA or RNA molecules that can bind specifically and strongly to a target molecule, such as a disease biomarker. |
Aptamers act like synthetic antibodies and are excellent for improving sensor specificity. |
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| 5 |
In a scenario where a sensor must detect ultra-low concentrations of a cancer biomarker, which modification is most critical?
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3. Incorporating nanostructures to increase surface-to-volume ratio |
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When detecting ultra-low concentrations of a cancer biomarker, the sensor must capture as many target molecules as possible, even when they are scarce. |
This is essential in early cancer detection, where biomarkers may exist at picomolar or even femtomolar concentrations, and traditional sensors may miss them. |
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| 6 |
Why might two electrochemical sensors using the same nanomaterial produce inconsistent results?
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3. Variations in nanomaterial synthesis affect structural uniformity |
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| 7 |
Which characteristic makes nanotechnology-based electrochemical sensors especially suitable for wearable medical devices?
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3. They allow miniaturization without losing sensitivity |
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| 8 |
What would likely happen if the bioreceptor layer is poorly immobilized on the sensor surface?
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3. Target biomolecules may not bind effectively, leading to weak or inaccurate signals |
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| 9 |
Which modification would most directly enhance electron transfer in the sensor system?
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2. Incorporating carbon nanotubes on the electrode surface |
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| 10 |
How can digital sensing technologies best support personalized cancer care?
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2. By collecting real-time data on patient-specific symptoms and responses |
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| 11 |
If a clinician needs to monitor fatigue and motion in cancer patients at home, which device should be prioritized?
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2. Smart accelerometers in wearables |
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| 12 |
Why is combining sensor data with patient-reported outcomes (PROs) important in digital cancer care?
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3. It allows a holistic understanding of patient experience |
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| 13 |
A hospital invested in wearable digital monitoring but received low engagement from patients. Which of the following is most likely a contributing factor?
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2. High-speed internet availability |
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| 14 |
Which future trend is most aligned with the development of emerging digital cancer platforms?
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3. Ending the use of AI in diagnostics |
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| 15 |
How can real-time symptom monitoring positively affect treatment decisions?
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3. By enabling rapid intervention before major deterioration |
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| 16 |
Which technology is best suited to detect rare cancer biomarkers with high precision?
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5. Fitness tracking watch |
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| 17 |
Why is collaboration between data scientists and clinicians essential in digital oncology platforms?
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3. Data insights require clinical validation for real-world use |
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| 18 |
Which outcome is most likely when cancer patients actively use digital health tools to track their condition?
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2. They engage more actively in shared treatment decisions |
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| 19 |
A research team is developing a highly selective electrochemical sensor for detecting cancer biomarkers in blood. Based on the diagram, which combination of nanoparticle properties would most likely enhance both specificity and signal sensitivity?
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5. Plate-shaped particles with random crystalline structure and no functional groups |
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| 20 |
A hospital is planning to adopt a single digital sensing platform to support a wide range of diagnostic applications. Based on the image, which of the following most justifies this decision?
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3. Each type of diagnostic target (e.g., tumor cells, toxins) requires an entirely separate machine |
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