MCQ Collection
Medical Comprehensive Ability MCQs
Practice Medical Comprehensive Ability questions with answers and explanations.
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Correct Answer: D. Cardiac output equals heart rate multiplied by stroke volume and changes with preload, contractility and afterload
Explanation:
Cardiac output integrates rate and stroke volume, while loading conditions and contractility influence stroke volume.
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Correct Answer: A. Compensation changes the other component of the bicarbonate-carbon dioxide system but does not remove the primary disorder
Explanation:
Respiratory and renal responses limit pH change while the primary process remains identifiable.
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Correct Answer: C. Inflammatory mediators coordinate vascular change, leukocyte recruitment and local symptoms
Explanation:
Multiple mediators act on vessels, cells and tissues to produce the organised inflammatory response.
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Correct Answer: B. Bias is a systematic error in selection, measurement or analysis that can distort an estimated association
Explanation:
Larger samples reduce random error but do not necessarily correct systematic design or measurement problems.
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Correct Answer: A. Net passive transport follows an electrochemical gradient and does not directly consume ATP
Explanation:
Passive transport is driven by concentration and electrical gradients, although channels or carriers may facilitate it.
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Correct Answer: B. Cardiac output equals heart rate multiplied by stroke volume and changes with preload, contractility and afterload
Explanation:
Cardiac output integrates rate and stroke volume, while loading conditions and contractility influence stroke volume.
Choose an option to check your answer.
Correct Answer: C. Compensation changes the other component of the bicarbonate-carbon dioxide system but does not remove the primary disorder
Explanation:
Respiratory and renal responses limit pH change while the primary process remains identifiable.
Choose an option to check your answer.
Correct Answer: C. Inflammatory mediators coordinate vascular change, leukocyte recruitment and local symptoms
Explanation:
Multiple mediators act on vessels, cells and tissues to produce the organised inflammatory response.
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Correct Answer: A. Cancer develops through accumulated alterations affecting growth control, survival, repair and the tissue environment
Explanation:
Tumorigenesis is multistep and reflects genetic, epigenetic and microenvironmental selection.
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Correct Answer: A. Antibiotic exposure can select resistant organisms already carrying or acquiring resistance determinants
Explanation:
Selection favours resistant variants, while transmission and gene exchange can spread resistance.
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Correct Answer: C. Antigen recognition plus appropriate co-stimulation and cytokine signals shape lymphocyte activation and differentiation
Explanation:
Adaptive responses integrate receptor specificity with co-stimulatory and environmental signals.
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Correct Answer: B. Bias is a systematic error in selection, measurement or analysis that can distort an estimated association
Explanation:
Larger samples reduce random error but do not necessarily correct systematic design or measurement problems.