Practice Pakistan questions with answers and explanations.
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Machu Picchu was built by the Inca civilization.
It is located high in the Andes of Peru.
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The cell is the smallest structural and functional unit of living organisms.
All living things are made of one or more cells.
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The heart pumps blood through the circulatory system.
Its contractions deliver oxygen and nutrients to tissues.
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The skin is the body's largest organ by surface area and mass.
It protects internal tissues and helps regulate temperature.
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The femur is the thigh bone.
It is the longest and one of the strongest bones in the body.
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Red blood cells contain hemoglobin, which binds oxygen.
They transport oxygen from the lungs to body tissues.
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Platelets gather at damaged blood vessels and help form clots.
This reduces blood loss after injury.
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The kidneys filter the blood and regulate water and salts.
Their waste product is excreted as urine.
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The cerebellum coordinates movement, posture, and balance.
It lies at the back of the brain.
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Human body cells normally contain 46 chromosomes in 23 pairs.
Reproductive cells contain 23 chromosomes.
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Constantinople served as the capital of the Byzantine Empire.
The city is now known as Istanbul.
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The Berlin Wall opened in November 1989.
Its fall became a symbol of the end of Cold War divisions in Europe.
