General Knowledge Flashcards

Which blood type is known as the 'universal donor'?

Answer: O negative

O negative red blood cells lack A, B, and Rh antigens, making them compatible with all blood types in emergency situations.

What percentage of the human body is made up of water?

Answer: Around 60%

Water makes up approximately 60% of total adult body weight, though this varies by age, sex, and body composition.

Which of the following is a communicable disease?

Answer: Tuberculosis

Tuberculosis is caused by Mycobacterium tuberculosis and spreads from person to person via airborne droplets.

What is the role of red blood cells?

Answer: Transport oxygen

Red blood cells contain haemoglobin, which binds to oxygen in the lungs and delivers it to tissues throughout the body.

Which part of the brain is primarily responsible for balance and coordination?

Answer: Cerebellum

The cerebellum coordinates voluntary movements, balance, and fine motor control.

Which element is most abundant in the Earth's atmosphere?

Answer: Nitrogen

Nitrogen makes up approximately 78% of the Earth's atmosphere, with oxygen comprising about 21%.

Which of the following best describes a placebo?

Answer: An inert substance given as a control treatment

A placebo is an inactive treatment (e.g., sugar pill) used in clinical trials as a control to distinguish real drug effects from psychological responses.