Worksheet On Biochemistry

512 Words3 Pages
Question 1 Answers: The sum of all chemical reactions is referred as metabolism. This is divided into catabolism in which complex substances are broken down into simple ones, with the release of ATP, and anabolism in which simple substances are used to make complex ones, spending energy. This type of reaction is also known as a biosynthetic reaction. Part of the energy in both types of reactions is lost to the environment as heat, metabolic pathways are defined as the sequences of chemical reactions in the cell. All these reactions result from the action of specialized proteins known as enzymes. Question 2 Answers: Enzymes are proteins that accelerate biological chemical reactions. They act specifically upon a substrate. Enzymes speed up these reactions…show more content…
 Structure similar to substrate |  Harmful noncompetitive enzyme inhibitor | C.  Tie up metals |  Feedback enzyme inhibition | B.  Binds to allosteric site |  Ribozyme | D.  Catalytic RNA molecule | Question 5 Potentially, how many molecules of ATP can be generated by prokaryotes from the complete oxidation of glucose to CO2 and H2O? Answers: 38 Question 6 How many molecules of ATP are spent by prokaryotes in the oxidation of glucose to pyruvic acid? Answers: 2 Question 7 Although the production of ATP during fermentation is limited, its advantage over respiration is that in fermentation Answers: | The final electron acceptors could be either inorganic or organic molecules | | Glucose is completely oxidized to CO2 and H2O. | | There is not need of an external molecule to serve as a final electron acceptor | | The production of FADH2 and NADH is higher than in respiration | | Glucose is oxidized to ethanol. | Question 8 Which of the following is not an end-product of fermentation? Selected Answer: Pyruvic acid Question 9 What is the fate of NADH molecules generated during glycolysis and Krebs
Open Document