Everyday Science MCQs

Science in Medicine and Healthcare MCQs with Answers

Which of the following is the smallest unit of life?
a) Cell
b) Tissue
c) Organ
d) Organism
Answer: a) Cell

What is the main function of red blood cells in the body?
a) Transporting oxygen
b) Fighting infection
c) Producing hormones
d) Digesting food
Answer: a) Transporting oxygen

What is the term for a disease that can be transmitted from one person to another?
a) Infectious
b) Chronic
c) Genetic
d) Autoimmune
Answer: a) Infectious

Which of the following is an example of a viral infection?
a) Influenza
b) Diabetes
c) Hypertension
d) Asthma
Answer: a) Influenza

What is the role of antibodies in the immune system?
a) Identifying pathogens
b) Regulating body temperature
c) Controlling blood sugar levels
d) Facilitating nerve transmission
Answer: a) Identifying pathogens

What is the function of the cerebrum in the brain?
a) Controlling voluntary movements
b) Regulating body temperature
c) Maintaining heart rate
d) Balancing the body
Answer: a) Controlling voluntary movements

Which of the following is responsible for carrying nerve impulses away from the cell body?
a) Axon
b) Dendrite
c) Synapse
d) Nucleus
Answer: a) Axon

What is the function of insulin in the body?
a) Regulating blood sugar levels
b) Breaking down fats
c) Producing red blood cells
d) Digesting proteins
Answer: a) Regulating blood sugar levels

Which of the following is a major risk factor for cardiovascular diseases?
a) Obesity
b) Osteoporosis
c) Asthma
d) Migraine
Answer: a) Obesity

What is the primary function of the respiratory system?
a) Oxygenation of the blood
b) Pumping blood to the body
c) Digesting food
d) Regulating body temperature
Answer: a) Oxygenation of the blood

Which of the following is an example of a non-communicable disease?
a) Tuberculosis
b) HIV/AIDS
c) Diabetes
d) Influenza
Answer: c) Diabetes

What is the purpose of a vaccine?
a) To stimulate an immune response
b) To treat bacterial infections
c) To lower blood pressure
d) To relieve pain
Answer: a) To stimulate an immune response

Which of the following is a major risk factor for developing cancer?
a) Physical activity
b) Healthy diet
c) Tobacco use
d) Adequate sleep
Answer: c) Tobacco use

What is the function of the liver in the human body?
a) Detoxifying harmful substances
b) Pumping blood to the body
c) Producing insulin
d) Filtering urine
Answer: a) Detoxifying harmful substances

Which of the following is a method used to visualize internal body structures?
a) X-ray
b) ECG
c) Blood test
d) Blood pressure measurement
Answer: a) X-ray

What is the term for the chronic inflammation of the joints?
a) Arthritis
b) Diabetes
c) Hypertension
d) Asthma
Answer: a) Arthritis

Which of the following is an example of a central nervous system disorder?
a) Parkinson’s disease
b) Asthma
c) Diabetes
d) Hypertension
Answer: a) Parkinson’s disease

What is the purpose of an electrocardiogram (ECG)?
a) To measure the electrical activity of the heart
b) To assess lung function
c) To monitor blood pressure
d) To evaluate kidney function
Answer: a) To measure the electrical activity of the heart

Which of the following is a method used to diagnose medical conditions using sound waves?
a) X-ray
b) MRI
c) Ultrasound
d) CT scan
Answer: c) Ultrasound

What is the function of the adrenal glands in the body?
a) Producing hormones such as adrenaline
b) Digesting food
c) Filtering waste products from the blood
d) Regulating body temperature
Answer: a) Producing hormones such as adrenaline

Which of the following is a method used to measure blood pressure?
a) ECG
b) X-ray
c) Pulse oximetry
d) Sphygmomanometer
Answer: d) Sphygmomanometer

What is the purpose of an MRI scan?
a) To visualize soft tissues and organs
b) To measure blood pressure
c) To assess lung function
d) To evaluate kidney function
Answer: a) To visualize soft tissues and organs

Which of the following is a method used to measure lung function?
a) X-ray
b) Blood test
c) ECG
d) Spirometry
Answer: d) Spirometry

What is the role of platelets in the blood?
a) Blood clotting
b) Transporting oxygen
c) Fighting infection
d) Regulating body temperature
Answer: a) Blood clotting

Which of the following is an example of an autoimmune disease?
a) Rheumatoid arthritis
b) Influenza
c) Tuberculosis
d) Malaria
Answer: a) Rheumatoid arthritis

What is the term for the branch of medicine that focuses on the treatment of cancer?
a) Oncology
b) Cardiology
c) Neurology
d) Endocrinology
Answer: a) Oncology

Which of the following is a method used to diagnose diseases by examining body tissues under a microscope?
a) X-ray
b) MRI
c) Biopsy
d) Ultrasound
Answer: c) Biopsy

What is the purpose of anesthesia in surgical procedures?
a) To induce sleep
b) To relieve pain
c) To control blood pressure
d) To regulate body temperature
Answer: b) To relieve pain

Which of the following is a method used to measure blood glucose levels?
a) ECG
b) Spirometry
c) Blood test
d) Sphygmomanometer
Answer: c) Blood test

What is the function of the small intestine in the digestive system?
a) Absorption of nutrients
b) Pumping blood to the body
c) Regulating body temperature
d) Filtering urine
Answer: a) Absorption of nutrients

Which of the following is a method used to diagnose diseases using radioactive substances?
a) X-ray
b) MRI
c) CT scan
d) Nuclear medicine imaging
Answer: d) Nuclear medicine imaging

What is the term for the study of the causes and origins of diseases?
a) Epidemiology
b) Genetics
c) Pathology
d) Histology
Answer: a) Epidemiology

Which of the following is a method used to measure bone density?
a) X-ray
b) MRI
c) ECG
d) Dual-energy X-ray absorptiometry (DEXA)
Answer: d) Dual-energy X-ray absorptiometry (DEXA)

What is the term for the process of removing waste products from the body?
a) Excretion
b) Respiration
c) Digestion
d) Circulation
Answer: a) Excretion

Which of the following is a method used to monitor heart activity over a period of time?
a) ECG
b) X-ray
c) Blood test
d) Holter monitor
Answer: d) Holter monitor

What is the function of the thyroid gland in the body?
a) Regulating metabolism
b) Pumping blood to the body
c) Producing insulin
d) Filtering urine
Answer: a) Regulating metabolism

Which of the following is a method used to diagnose diseases by analyzing the DNA of an individual?
a) X-ray
b) MRI
c) Blood test
d) Genetic testing
Answer: d) Genetic testing

What is the term for the study of drugs and their effects on the body?
a) Pharmacology
b) Anatomy
c) Physiology
d) Pathology
Answer: a) Pharmacology

Which of the following is a method used to monitor oxygen levels in the blood?
a) X-ray
b) ECG
c) Blood test
d) Pulse oximetry
Answer: d) Pulse oximetry

What is the purpose of a cardiac catheterization?
a) To assess lung function
b) To measure blood pressure
c) To visualize blood vessels of the heart
d) To evaluate kidney function
Answer: c) To visualize blood vessels of the heart

Which of the following is a method used to measure brain activity?
a) ECG
b) EEG
c) Blood test
d) MRI
Answer: b) EEG

What is the term for the surgical removal of the appendix?
a) Appendectomy
b) Tonsillectomy
c) Hysterectomy
d) Mastectomy
Answer: a) Appendectomy

Which of the following is a method used to measure kidney function?
a) X-ray
b) ECG
c) Blood test
d) Creatinine clearance test
Answer: d) Creatinine clearance test

What is the function of the pituitary gland in the body?
a) Regulating other endocrine glands
b) Digesting food
c) Filtering waste products from the blood
d) Regulating body temperature
Answer: a) Regulating other endocrine glands

Which of the following is a method used to monitor brain activity and diagnose neurological disorders?
a) EEG
b) ECG
c) Blood test
d) X-ray
Answer: a) EEG

What is the term for the process of delivering oxygen to the body’s tissues and removing carbon dioxide?
a) Respiration
b) Circulation
c) Digestion
d) Excretion
Answer: a) Respiration

Which of the following is a method used to measure electrical activity in the heart?
a) ECG
b) EEG
c) Blood test
d) X-ray
Answer: a) ECG

What is the term for the process of surgically repairing a fractured bone?
a) Reduction
b) Resection
c) Reconstruction
d) Transplantation
Answer: a) Reduction

Which of the following is a method used to diagnose diseases by analyzing a sample of body fluid?
a) X-ray
b) MRI
c) Blood test
d) CT scan
Answer: c) Blood test

What is the function of the pancreas in the body?
a) Producing insulin and digestive enzymes
b) Pumping blood to the body
c) Filtering waste products from the blood
d) Regulating body temperature
Answer: a) Producing insulin and digestive enzymes

Which of the following is a method used to measure visual acuity?
a) X-ray
b) ECG
c) Blood test
d) Snellen chart
Answer: d) Snellen chart

What is the term for the process of restoring lost function to the body through therapy and rehabilitation?
a) Rehabilitation
b) Resuscitation
c) Regeneration
d) Reproduction
Answer: a) Rehabilitation

Which of the following is a method used to measure kidney function and detect abnormalities?
a) X-ray
b) ECG
c) Blood test
d) Renal function test
Answer: d) Renal function test

What is the purpose of an endoscopy?
a) To visualize internal organs and tissues
b) To measure blood pressure
c) To assess lung function
d) To evaluate kidney function
Answer: a) To visualize internal organs and tissues

Which of the following is a method used to diagnose diseases by analyzing the structure and function of cells?
a) X-ray
b) MRI
c) Biopsy
d) Blood test
Answer: c) Biopsy

What is the term for the surgical removal of a tumor?
a) Excision
b) Incision
c) Resection
d) Transplantation
Answer: a) Excision

Which of the following is a method used to monitor blood sugar levels over a period of time?
a) X-ray
b) ECG
c) Blood test
d) Continuous glucose monitoring
Answer: d) Continuous glucose monitoring

What is the function of the gallbladder in the body?
a) Storing and releasing bile
b) Digesting food
c) Filtering waste products from the blood
d) Regulating body temperature
Answer: a) Storing and releasing bile

Which of the following is a method used to diagnose diseases by analyzing the structure and function of the heart?
a) ECG
b) MRI
c) Biopsy
d) Blood test
Answer: a) ECG

What is the term for the process of surgically opening a blocked artery to restore blood flow?
a) Angioplasty
b) Amputation
c) Appendectomy
d) Arthroscopy
Answer: a) Angioplasty

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