I am made of two atoms, and I help you breathe. What am I? UPCNET PYQ

Oxygen is a diatomic molecule (O₂) essential for life. It is required for cellular respiration, which produces energy in the form of ATP. This gas is vital for all aerobic organisms, including humans, and is transported in the blood by hemoglobin. In UPCNET PYQ, this question tests basic knowledge of chemistry and human physiology, especially the role of oxygen in respiration and nursing care.

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📘 Topic: Chemistry & Physiology – Respiratory System
📍 Exam: UPCNET PYQ
💡 Tip: Remember — “Oxygen is a diatomic molecule that keeps us alive.”

I am made of two atoms, and I help you breathe – What am I?
Answer – Oxygen (O₂)
Oxygen is essential for life
It is a diatomic molecule consisting of two oxygen atoms
Required for cellular respiration in all aerobic organisms
Helps produce energy in the form of ATP
Transported in blood by hemoglobin
Oxygen enters the body through the respiratory system
It diffuses into the alveoli of the lungs
Essential for metabolism of nutrients
Supports brain, heart, and muscle function
Deficiency leads to hypoxia and other complications
Used in medical oxygen therapy for patients
Important in critical care and emergency settings
Involved in combustion and many chemical reactions
Plays a role in oxidative phosphorylation
Oxygen is colorless, odorless, and tasteless
Maintains life processes and homeostasis
Vital for energy production and cell function
Frequently asked in UPCNET exams for nursing students
Concept important in chemistry and physiology for nursing

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