25 public questions tagged with this topic.
Surfactant is a lipoprotein secreted by alveolar cells to reduce surface tension and prevent alveolar collapse.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Most carbon dioxide is transported in the blood as bicarbonate ions (HCO₃⁻), facilitating CO₂ removal from tissues.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
High pCO₂ and high H⁺ concentration reduce hemoglobin’s affinity for oxygen, promoting oxygen unloading in tissues.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Low H⁺ concentration (higher pH) increases hemoglobin's affinity for oxygen, favoring oxygen uptake in the lungs.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
High temperature reduces hemoglobin’s affinity for oxygen, promoting oxygen release at tissues.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
Oxygen dissociation from hemoglobin is influenced by pCO₂, pH, and temperature, but not by enzyme concentration.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Respiratory Disorders - Asthma Emphysema Occupational Disorders
The Bohr effect states that an increase in pCO₂ reduces hemoglobin's affinity for oxygen, promoting oxygen unloading in tissues.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Transport of Carbon Dioxide and Regulation of Respiration
Hypoxia is a condition where oxygen supply to tissues is reduced, affecting cellular respiration.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Transport of Carbon Dioxide and Regulation of Respiration
Nitrogen does not influence hemoglobin’s affinity for oxygen, unlike pO₂, pH, and temperature.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Exchange of Gases and Transport of Oxygen
The pneumotaxic center in the pons moderates the function of the respiratory rhythm center by adjusting the duration of inspiration.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Exchange of Gases and Transport of Oxygen
The primary driving force for oxygen diffusion in the lungs is the partial pressure gradient between alveolar air and blood.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Exchange of Gases and Transport of Oxygen
Oxygen binds reversibly with hemoglobin to form oxyhemoglobin, which facilitates oxygen transport in the blood.
Ref: NCERT Class 11 Biology Chapter 14: Breathing and Exchange of Gases Exchange of Gases and Transport of Oxygen
