Which of the following statements are true about respiration ?
(i) during inhalation, ribs move inward and diaphragm is raised
(ii) the gaseous exchange takes place in the alveoli
(iii) haemoglobin has greater affinity for carbon dioxide than oxygen
(iv) alveoli increase surface area for the exchange of gases

Which of the following is a by product of Aerobic respiration? i. Carbon dioxide ii. Oxygen iii. Water iv. None of them

Which of the following statements (s) is (are) correct ? (i) Pyruvate can be converted into ethanol and carbon dioxide by yeast (ii) Fermantation takes place in aerobic bacteia (iii) Fermantation takes place in mitochondria (iv) Fermentation is a form of anaerobic respiration

Which of the following statements (s) is (are) correct ? (i) Pyruvate can be converted into ethanol and carbon dioxide by yeast (ii) Fermantation takes place in aerobic bacteia (iii) Fermantation takes place in mitochondria (iv) Fermentation is a form of anaerobic respiration

Which of the following statement(s) is (are) correct? (i) Pyruvate can be converted into ethanol and carbon dioxide by yeast (ii) Fermentation takes place in aerobic bacteria (iii) Fermentation takes place in mitochondria (iv) Fermentation is a form of anaerobic respiration

Which of the followig statements are true about surfactants ? (i) Thin non- cellular films made of protein and phospholipids - covering alveolar membrane. (ii) Their synthesis begins only after the 25^(th) week of gestation . (iii) They lower the surface tension in the alveoli and prevents the lungs from collapsing. (iv) They are synthesised and secreted by type II cells of the squamouse epithelial cells of alveoli.

Which of the following statements (s) is (are) correct? (i) Pyruvate can be converted into ethanol and carbon dioxide by yeast. (ii) Fermentation takes place in aerobic bacteria. (iii) Fermentation takes place in mitochondria. (iv) Fermentation is a form of anaerobic respiration.