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(a) In the process of respiration, state the function of alveoli.

(b) Rate of breathing in aquatic organisms is much faster than that in terrestrial organisms. Give reasons.

(c) Complete the following pathway showing the breakdown of glucose :

\underset{(6-carbon \; molecules)}{Glucose}\overset{in \: cytoplasm}{\rightarrow}(i)\xrightarrow[(3-carbon \; molecules +energy)]{?}\xrightarrow[in\: mitochondria]{Presence\; of\; O_{2}}(ii)\underline{?}+H_{2}O+energy

 

 

 

 
 
 
 
 

Answers (1)

a) In the process of respiration, alveoli plays an important part as it's function is to exchange oxygen and carbon dioxide molecules to and from the bloodstream.

b) The rate of breathing in aquatic organisms is much faster due to the low concentration of oxygen in the aquatic environment than that seen in terrestrial organisms.

c) i) Pyruvate

ii) CO+ H2O + Energy

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Safeer PP

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