Answer the questions.
Answers
Answer:
1) break down of glucose is depend upon the availablity of oxygen , in the presence of oxygen glucose is broken down aerobically and in the absence of oxygen glucose is broken down anaerobically
2 )(a) Transport of oxygen: The oxygen in the alveolar air is taken up by blood in the alveolar blood vessels to be transported to all the cells in the body. In human beings, the respiratory pigment, called haemoglobin present in the red blood corpuscles carries oxygen to different tissues of the body.
(b) Transport of carbon dioxide: Carbon dioxide is more soluble in water. Hence is mostly transported from body tissues in the dissolved form in our blood plasma to lungs. Where it diffuses from blood to air in the lungs.
3) In humans, a pair of lungs are designed in such a way that they are lined by a thin membrane, the smaller tubes called bronchioles a balloon-like structure called alveoli and network of blood capillaries increase the surface area for exchange of gases.
Explanation:
1. oxidation of glucose occurs in aerobic and aerobic pathways (gluconeogenesis , glycosis , ETC , TCA cycles )
2. the transport of oxygen takes place through blood
the oxygen forms forms a bond with heamoglobin present in the RBC named as 'oxyhemoglobin ' majority of oxygen is transported through the body in this way
3. our lungs have many small chambers "alveoli " in which air fill and external inspiration takes place , the lung tissue stretchs while inhaling the rib cage expands too and dighpram contracts , vice versa for exhaling
hope this helps
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