At the complete end of cellular respiration, how many molecules of atp are produced

38 ATP

Explanation:

On complete oxidation of one molecule of glucose yields 38 ATP.  Break up of energy production is given below:  

During glycolysis 2 ATP and 2 NADH is produced. During formation of Acetyl CoA, 2 NADH is produced.  During Citric Acid Cycle, 2 ATP, 6 NADH, 2 FADH₂ are produced.  

Finally during Electron transport chain, reduced coenzymes NADH and FADH₂ oxidised to release ATP. Each NADH produce 3ATP and each FADH₂ produces 2 ATP. Altogether 10 NADH is produced during entire process of cellular respiration which yield 30 ATP and 2 FADH₂ yields 4 ATP. Therefore, on complete oxidation of one molecule of glucose yields 38 ATP.

That is true tge cactus as a structural adaptation to its envirinment has it leaves reduced to spines. but this doesnt mean it cant produce food it produces food because of the presence of chlorophyll in its stem

The correct answer is  b)