Question

1. What is the overall goal of cellular respiration? What are the reactants of cellular respiration? What are the products of cellular respiration? 2. Why is cellular respiration also called aerobic respiration? 3. Is glucose oxidized or reduced? Is oxygen oxidized or reduced? 4. Why is it important that there are many small intermediate steps in cellular respiration rather than one or two short bursts of metabolic energy? 5. What critical role does NAD+ and FAD play in cellular respiration? 6. List the major reactions of cellular respiration. Where does each reaction occur inside the cell? 7. What two types of reactions are anaerobic? What is the difference between glycolysis and fermentation? 8. What are the advantages and disadvantages of fermentation? What is the difference between bacterial fermentation and yeast fermentation?

Answer 1

1- The overall goal of cellular respiration is to produce energy for the cell to perform various functions . The energy is in the form of ATP . It is the reaction that converts the biochemical energy into adenosine triphosphate ( ATP ) .

The various reactants are :-

A) carbohydrates - sugar

B) proteins - amino acids

C) fats - fatty acids

The products of cellular respiration are -

A) Carbon dioxide

B) Water

C) Heat or energy

2- The cellular respiration is called aerobic respiration because it requires oxygen ( O² ) to produce ATP . The oxygen acts as a oxidizing agent and elctron acceptor .

3- The glucose is oxidized and the oxygen is reduced .

4- It is very important to produce energy into smaller fractions rather than in a single large step in the form of burst because energy is required continuously and a single step will produce energy in fraction of seconds and after that there will be no energy left for further functions and that single step will produce a large amount of energy that is not utilized as a whole by the cell.

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