Explanation

• The term “antigen” was coined in 1899 by Ladislas Deutsch (László Detre).
• The word is derived from “antibody-generating” (anti + gen).

Additional information:

• Louis Pasteur is famous for his work on vaccination and germ theory.
• Edward Jenner pioneered the smallpox vaccine.

Last verified on 01-09-2026

Explanation

• The skin is considered the largest organ of the human body.
• It covering an area of about 1.5-2 square meters (16-22 square feet).
• It weighing around 3-4 kilograms (7-9 pounds).

Last verified on 01-09-2026

Explanation

• Phosphorus is not among the top 10 most abundant elements in the Earth's crust.
• Most abundant element in Earth crust is Oxygen.
• Oxygen in the crust is (46. 1%).
• The chemical formula of oxygen (dioxygen) is O2.

List of 10 Most Abundant Elements in the Earth's Crust:

Last verified on 01-09-2026

Explanation

• Deuteranopia is a type of red-green colour blindness caused by the absence of functioning green-sensitive cones.
• It mainly affects the ability to distinguish green from red.
• It is an X-linked recessive condition.
• It is more common in males.

Last verified on 01-09-2026

Explanation

• Depression is classified as a psychological and medical mood disorder
• It disrupts normal work and social life.
• Low mood or ongoing sadness
• Loss of pleasure in hobbies.
• Changes in sleep or weight