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Main Subjects MCQs With Answers
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Human skin is generally described as consisting of which two main layers?
AThe retina and the cornea
BThe cortex and the medulla
CThe epidermis and the dermis
DThe cerebrum and cerebellum
What is a commonly recommended immediate first aid step for a minor household burn?
ACooling the affected area with cool running water
BApplying ice directly to the burned area
CApplying butter or oil to the burn
DCovering the burn tightly with a bandage immediately, without cooling it first
Melanin, a natural pigment produced within the body, is primarily responsible for determining what physical characteristic?
AThe color of a person's skin, hair, and eyes
BHeight
CBlood type
DBone density
CPR, an emergency technique combining chest compressions and rescue breaths, is primarily performed in which situation?
AFor a minor headache
BFor treating a common cold
CFor minor cuts and scrapes
DWhen someone's heart has stopped beating or they have stopped breathing
Keratin, a tough structural protein, is the primary component of which parts of the human body?
AStomach acid
BBone marrow
CBlood plasma
DHair, nails, and the outer layer of skin
Regular aerobic exercise, such as brisk walking or running, generally has what long-term effect on the heart muscle?
AIt weakens the heart muscle over time
BIt has no measurable effect on the heart at all
CIt helps strengthen the heart muscle, improving its overall efficiency
DIt permanently stops the heart from adapting further
Rabies is a serious viral disease that is typically transmitted to humans through what means?
AThe bite or scratch of an infected animal
BContaminated drinking water
CAirborne transmission through coughing
DContact with contaminated soil
What is the main cause of delayed onset muscle soreness (DOMS), felt a day or two after intense or unaccustomed exercise?
ATiny tears in muscle fibres and the inflammation that follows
BLactic acid left in the muscles
CAn increase in bone density
DExcess oxygen in the muscles
What term describes the body’s ability to maintain a relatively stable and balanced internal environment despite changes occurring in its external surroundings?
AOsmosis
BMetabolism
CHomeostasis
DPhotosynthesis only
What is the primary function of tendons, the strong, fibrous connective tissue found throughout the body?
AConnecting muscle to bone
BConnecting bone directly to bone
CStoring digestive enzymes
DProducing new blood cells