Study the given flow chart and answer any four questions.  

 

 

a) Name X, Y, and Z? 

(i) X-Glycolysis, Y-Anaerobic, Z-Aerobic 

(ii) X-Krebs’s cycle, Y-Aerobic, Z-Anaerobic 

(iii) X-Glycolysis, Y-Aerobic, Z-Anaerobic 

(iv) X-Glycolysis, Y-Aerobic, Z-Krebs’s cycle 

 

b) The process X occurs in _____ and Y occurs in _____ part of the cell.  

(i) Mitochondria and cytoplasm, respectively 

(ii) Cytoplasm and mitochondria, respectively  

(iii) Both takes place in the cytoplasm  

(iv) Both take place in Mitochondria 

 

c) Which of these organisms engages in process Z? 

(i) Bacteria  

(ii) Humans 

(iii) Yeast  

(iv) Spirogyra 

 

d) What area of the human body does process Z occur in? 

(i) In muscle cells  

(ii) In Kidneys 

(iii) In liver cells  

(iv) In Leydig's cell 

 

e) Where in a cell does aerobic respiration take place? 

(i) Mitochondria  

(ii) Cytoplasm  

(iii) Nucleus  

(iv) Plastid  

a) Glycolysis is the breakdown of complex carbohydrates into simpler forms, i.e. pyruvic acid. Thus, X represents glycolysis. In the absence of oxygen, pyruvic acid further converts into alcohol and carbon dioxide with less amount of energy, which is known as anaerobic respiration. Thus, Z represents anaerobic. Whereas, in the presence of oxygen, pyruvic acid converts into carbon dioxide, and water, with a large amount of energy, which is known as aerobic respiration. Thus, Y represents aerobic. 

Hence, the correct option is (iii) X-Glycolysis, Y-Aerobic, Z-Anaerobic.  

b) The breakdown of glucose into a three-carbon molecule called pyruvate takes place in the cytoplasm, whereas the process of aerobic respiration takes place in mitochondria. 

 Hence, the correct option is (ii) Cytoplasm and mitochondria, respectively.  

c) The anaerobic process, i.e. Z, takes place in yeast. This process takes place in the absence of air.  

Hence, the correct option is (iii) Yeast. 

d) In the human body, Z(anaerobic respiration) take place in muscle cells.  

Hence, the correct option is (i) In muscle cells.  

e) Aerobic respiration takes place in the mitochondria of the cell.  

Hence, the correct option is (i) Mitochondria.