UCAT General Knowledge 4 — Questions and Answers
Question 1: In a clinical trial, what is 'blinding' designed to prevent?
- Allergic reactions to the drug
- Bias from participants or researchers knowing treatment allocation (Correct answer)
- Ethical violations in patient care
- Data loss due to dropout
Correct answer: Bias from participants or researchers knowing treatment allocation
Blinding prevents knowledge of treatment assignment from influencing participant behaviour or researcher assessments, reducing bias.
Question 2: What does BMI stand for?
- Body Muscle Index
- Basic Metabolic Indicator
- Body Mass Index (Correct answer)
- Basal Metabolic Index
Correct answer: Body Mass Index
Body Mass Index (BMI) is a measure of body fat based on weight in relation to height, calculated as kg/m².
Question 3: Which of these is an example of a primary preventive health measure?
- Chemotherapy for cancer
- Early detection screening
- Vaccination against influenza (Correct answer)
- Rehabilitation after a stroke
Correct answer: Vaccination against influenza
Primary prevention aims to prevent disease before it occurs; vaccination reduces the risk of contracting influenza.
Question 4: The Hippocratic principle 'primum non nocere' translates to:
- First, do no harm (Correct answer)
- First, treat the patient
- Above all, be truthful
- Above all, respect autonomy
Correct answer: First, do no harm
'Primum non nocere' is a core medical ethical principle meaning clinicians should avoid causing unnecessary harm.
Question 5: Which of the following is the correct order of the scientific method?
- Hypothesis → Observation → Experiment → Conclusion
- Observation → Hypothesis → Experiment → Conclusion (Correct answer)
- Experiment → Hypothesis → Observation → Conclusion
- Conclusion → Experiment → Hypothesis → Observation
Correct answer: Observation → Hypothesis → Experiment → Conclusion
The scientific method begins with observation, leading to a hypothesis, which is tested through experiment, and results in a conclusion.
Question 6: What is 'informed consent' in healthcare?
- A patient agreeing under pressure to a procedure
- A legal document signed by a doctor
- A patient voluntarily agreeing to treatment after receiving adequate information (Correct answer)
- A form completed by next of kin for unconscious patients
Correct answer: A patient voluntarily agreeing to treatment after receiving adequate information
Informed consent is a patient's voluntary agreement to a proposed treatment after being given sufficient information about risks, benefits, and alternatives.
Question 7: Which of the following statements about antibiotics is correct?
- Antibiotics are effective against viral infections
- Overuse of antibiotics cannot cause resistance
- Antibiotics work by targeting bacterial structures or functions (Correct answer)
- Antibiotics should always be taken for exactly three days
Correct answer: Antibiotics work by targeting bacterial structures or functions
Antibiotics target structures unique to bacteria, such as cell walls or ribosomes, and are not effective against viruses.
UCAT General Knowledge 4
In a clinical trial, what is 'blinding' designed to prevent?