Explanation

• The mitochondrion is the primary site of oxidative phosphorylation in eukaryotic cells.
• Oxidative phosphorylation occurs mainly across the inner mitochondrial membrane.
• It produces most of the cell’s ATP (energy) through the electron transport chain and ATP synthase.

Last verified on 05-09-2026

Explanation

• The lungs exchange gases — they absorb oxygen (O₂) and release carbon dioxide (CO₂).
• This process is essential for respiration and energy production in the body.

Last verified on 05-09-2026

Explanation

• The pituitary gland is located at the base of the brain.
• It is below the hypothalamus.
• It sits in a hollowed-out area of the sphenoid bone called the sella turcica.

Last verified on 05-09-2026

Explanation

• Antonie van Leeuwenhoek is known as the Father of Microbiology.
• He was the first to observe and describe microorganisms using a microscope.
• He observed microscopic organisms in 1674.
• His discoveries included bacteria, protozoa, and other microscopic life forms.

Last verified on 05-09-2026

Explanation

Explanation

• Allergy is an abnormal immune response to harmless substances like dust or pollen.
• It occurs when the body reacts excessively to an allergen.
• This reaction involves the immune system producing antibodies.
• Thus, allergy is mainly due to an antigen–antibody reaction.

Last verified on 23-04-2026

Explanation

• Blood groups are identified by specific antigens present on the surface of red blood cells.
• These antigens determine compatibility for blood transfusions.
• They are key to classifying blood types like A, B, AB, and O.

Last verified on 04-09-2026

Explanation

• First Polio Vaccine Introduced: 1955
• Developer: Dr. Jonas Salk
• Type: Inactivated Polio Vaccine (IPV)
• Oral Polio Vaccine (OPV): 1961
• Developer of OPV: Dr. Albert Sabin

Last verified on 20-07-2026

Explanation

• The Banyan tree is famous for developing aerial roots from its branches.
• These roots grow downward and may become supporting trunks.
• Because of its multiple root-like structures.

Last verified on 04-09-2026

Explanation

• The normal number of ribs in a human body is 24 (12 pairs).

Additional information:

• Upper ribs: True ribs (1–7 pairs)
• Lower ribs: False ribs (8–12 pairs)
• Floating ribs: Last 2 pairs (11–12)

Last verified on 24-06-2026