About 479,000 results
Open links in new tab
  1. Respiration (physiology) - Wikipedia

    In physiology, respiration is a process that facilitates the transport of oxygen from the outside environment to bodily tissues and the removal of carbon dioxide using a respiratory system.

  2. Respiration - Definition and Types - ThoughtCo

    Jul 31, 2024 · Respiration is the process of gas exchange between the air and an organism's cells. Three types of respiration include internal, external, and cellular respiration.

  3. Cellular respiration | Definition, Equation, Cycle, Process, …

    Sep 22, 2025 · Cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining …

  4. Respiration - Definition, Types, Characteristics, Examples

    Jan 13, 2024 · Aerobic respiration wants oxygen to do its process. Aerobic respiration is a procedure that can take place in the presence of oxygen only, without oxygen, aerobic …

  5. Respiration Definition - BYJU'S

    Aug 6, 2021 · “Respiration is defined as a metabolic process wherein, the living cells of an organism obtains energy (in the form of ATP) by taking in oxygen and liberating carbon dioxide …

  6. Cellular Respiration: Steps, Process, and Stages | Osmosis

    Aug 21, 2025 · Cellular respiration is a metabolic pathway that uses glucose to produce adenosine triphosphate (ATP), an organic compound the body can use for energy. In ideal …

  7. RESPIRATION Definition & Meaning - Merriam-Webster

    The meaning of RESPIRATION is the movement of air or dissolved gases into and out of the lungs. How to use respiration in a sentence.

  8. Respiration - Definition, Classifications, Cellular Respiration & More

    Feb 6, 2025 · Respiration is a vital biological process through which living organisms convert nutrients into energy, crucial for survival. This process involves the inhalation of oxygen and …

  9. Respiratory System: Organs, Facts, Anatomy & Function

    Apr 2, 2024 · Respiratory System Your respiratory system is made up of your lungs, airways (trachea, bronchi and bronchioles), diaphragm, voice box, throat, nose and mouth. Its main …

  10. Respiration - Science for Everybody

    Explore aerobic and anaerobic respiration in plants and animals. Includes the equations, energy release, and comparisons with fermentation. A key process for understanding energy transfer.