BIOLOGICAL SCIENCES NURSING MCQ – We have prepared questions and answers based on syllabus of SNB EXAMINATION FOR ENROLLED NURSE, REGISTERED NURSE AND REGISTERED MIDWIFE for nurses. FOLLOW OUR YouTube for more information – https://www.youtube.com/channel/UCkzX6uvJzTK6aqf99S39ZeA
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BIOLOGICAL SCIENCES NURSING MCQ
- What is the primary function of red blood cells (RBCs) in the human body?
a) Blood clotting
b) Transporting oxygen to tissues
c) Fighting infection
d) Producing insulin
Answer: b) Transporting oxygen to tissues
- Which organ is responsible for filtering waste products from the bloodstream and producing urine?
a) Liver
b) Lungs
c) Kidneys
d) Stomach
Answer: c) Kidneys
- What is the main function of the respiratory system in the body? a) Regulation of blood sugar levels
b) Digestion of food
c) Exchange of oxygen and carbon dioxide
d) Maintenance of body temperature
Answer: c) Exchange of oxygen and carbon dioxide
- Which type of muscle is responsible for involuntary contractions of the digestive tract?
a) Skeletal muscle
b) Cardiac muscle
c) Smooth muscle
d) Striated muscle
Answer: c) Smooth muscle
- Which hormone is responsible for regulating blood glucose levels in the body?
a) Insulin
b) Thyroxine
c) Epinephrine
d) Estrogen
Answer: a) Insulin
- What is the primary function of platelets in the bloodstream?
a) Oxygen transport
b) Blood clotting
c) Immune response
d) Nutrient absorption
Answer: b) Blood clotting
- Which organ is responsible for producing bile, which aids in the digestion of fats?
a) Gallbladder
b) Pancreas
c) Spleen
d) Liver
Answer: d) Liver
- Which part of the nervous system is responsible for “fight or flight” responses to stress?
a) Sympathetic nervous system
b) Parasympathetic nervous system
c) Central nervous system
d) Enteric nervous system
Answer: a) Sympathetic nervous system
- What is the primary function of the lymphatic system in the body?
a) Producing hormones
b) Regulating blood pressure
c) Transporting oxygen
d) Immune defense and fluid balance
Answer: d) Immune defense and fluid balance
- Which type of white blood cell is primarily responsible for phagocytosis and the destruction of pathogens?
a) Lymphocytes
b) Neutrophils
c) Eosinophils
d) Basophils
Answer: b) Neutrophils
- What is the primary function of the endocrine system?
a) Regulation of muscle movement
b) Maintenance of electrolyte balance
c) Regulation of hormones and communication between cells
d) Oxygen transport
Answer: c) Regulation of hormones and communication between cells
- Which hormone is responsible for regulating calcium levels in the blood and bone health?
a) Insulin
b) Thyroxine
c) Parathyroid hormone (PTH)
d) Adrenaline
Answer: c) Parathyroid hormone (PTH)
- Which gland in the brain is responsible for regulating the sleep-wake cycle and producing melatonin?
a) Pituitary gland
b) Thyroid gland
c) Pineal gland
d) Adrenal gland
Answer: c) Pineal gland
- What is the primary function of the cardiovascular system in the body?
a) Regulation of body temperature
b) Transporting oxygen and nutrients to tissues
c) Producing insulin
d) Filtering waste products from the blood
Answer: b) Transporting oxygen and nutrients to tissues
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- Which chamber of the heart pumps oxygenated blood to the rest of the body?
a) Left atrium
b) Left ventricle
c) Right atrium
d) Right ventricle
Answer: b) Left ventricle
- Which blood vessel carries oxygenated blood from the lungs to the heart?
a) Pulmonary artery
b) Pulmonary vein
c) Aorta
d) Coronary artery
Answer: b) Pulmonary vein
- What is the primary function of the digestive system?
a) Pumping blood to the body
b) Producing insulin
c) Breaking down food and absorbing nutrients
d) Regulating body temperature
Answer: c) Breaking down food and absorbing nutrients
- Which organ produces enzymes and bicarbonate to aid in digestion and neutralize stomach acid?
a) Stomach
b) Small intestine
c) Liver
d) Pancreas
Answer: d) Pancreas
- What is the primary function of the integumentary system? a) Regulating blood sugar levels
b) Maintaining body temperature and protecting against pathogens
c) Producing insulin
d) Digesting food
Answer: b) Maintaining body temperature and protecting against pathogens
- Which part of the brain is responsible for coordinating voluntary muscle movements and balance?
a) Cerebrum
b) Cerebellum
c) Medulla oblongata
d) Hypothalamus
Answer: b) Cerebellum
- What is the primary function of the immune system in the body?
a) Regulation of blood glucose levels
b) Maintenance of electrolyte balance
c) Defense against pathogens and foreign invaders
d) Oxygen transport
Answer: c) Defense against pathogens and foreign invaders
- Which type of white blood cell plays a central role in specific immune responses and the production of antibodies?
a) Lymphocytes
b) Neutrophils
c) Eosinophils
d) Basophils
Answer: a) Lymphocytes
- What is the primary function of the adrenal glands in the body?
a) Producing insulin
b) Regulation of calcium levels
c) Regulation of stress responses and production of hormones like cortisol
d) Digestion of food
Answer: c) Regulation of stress responses and production of hormones like cortisol
- Which hormone is responsible for regulating blood pressure and fluid balance in the body?
a) Insulin
b) Thyroxine
c) Aldosterone
d) Epinephrine
Answer: c) Aldosterone
- What is the primary function of the skeletal system in the body?
a) Transporting oxygen
b) Regulating blood pressure
c) Providing support and protection, as well as facilitating movement
d) Digesting food
Answer: c) Providing support and protection, as well as facilitating movement
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