Question

Asgarrent: Chapter AS Question 10 Not yet awer Marlen otot le Leuconostoc species are used to ferment cabbage into sauerkraut producing lactic acid, ethanol, and carbon dioxide. This type of fermentation is called Select one or more a. homolactic acid fermentation b. alcohol fermentaiton c. heterolactic acid fermentation d. acid alcohol fermentation Question 11 Maldo Pace Cytochrome coxidase and cytochrome c form the last complex in the electron transport chain of some microbes. The reaction catalyzed by cytochrome coardase is shown below. 4 Fe2+-cytochrome + 8 H+in+024 Fe3+ cytochrome c+ 2 H20 4 Hrout Cyanide binds irreversibly to cytochrome coxidase preventing it from carrying out the reaction above. Therefore cyanide Select one or more: a increases in the rate of conversion of oxygen to water b. decreases the rate of transfer of hydrogen ions across the membrane C. Increases in the formation of ATP from ADP and Pi. decreases in the concentration of NADH in the cell

Answer 1

(10)

The glucose is converted into two molecules of lactate by homofermentative bacteria in the process of homolactic acid fermentation. The reaction used to undergo substrate-level phosphorylation to produce two molecules of ATP is shown below:

glucose + 2ADP +2Pi + 2lactate + 2ATP

Hence, option (a) is incorrect.

A biochemical process in which sugars like glucose is broken into small amounts of ethanol, carbon dioxide, and ATP is known as alcohol fermentation. The reaction is given below:

C6H1206 → 2C2H5OH + 2002

Hence, option (b) is incorrect.

Less ATP and less lactate are generated by the heterofermentative bacteria but they produce some other end products alongside lactate in the process of heterolactic acid fermentation. The reaction is shown below:

glucose + ADP + Pi + lactate + ethanol + CO2 + ATP

Hence, option (c) is correct.