Question

0.75 pts Question 20 Which about nitrogen fixation is true? O Decomposers perform to create nitrites and nitrates O Involves creating ammonia (NH3) from atmospheric nitrogen gas Is the same as denitrification O Involves recycling N2 back into the atmosphere None is true about nitrogen fixation

Answer 1

1)Involves creating ammonia from atmospheric nitrogen gas. Nitrogen fixation is process in which molecular nitrogen in the air is converted into ammonia in the soil. The other options are not suitable because, the decomposers actually perform to create ammonia directly and only after that ammonia is converted into nitrites and nitrates. Denitrification is the process of converting nitrates into nitrogen gas by denitrifying bacteria. Recycling nitrogen back into the atmosphere is called denitrification. Therefore more the suitable answer is creating ammonia from atmospheric nitrogen gas. The nitrogen fixation and nitrogen cycle is different. Nitrogen cycle refers to the entire process including fixation, ammonification, nitrification, and denitrification, but nitrogen fixation is just a process in the nitrogen cycle that involves the bacterial conversion of atmospheric nitrogen to ammonia in the presence of an enzyme complex called nitrogenase.

2)Glucose → 2 Ethyl alcohol + 2 CO2 + 2ATP.  Alcoholic fermentation is a biological process in which sugar (glucose) is converted into alcohol (ethanol/ethyl alcohol) and carbon dioxide by giving out 2 ATP of energy. The formula of Glucose is C6H12O6, which comes at LHS. Thus the RHS must be 2 C2H5OH + 2 CO2 for balancing the equation (6carbon at LHS and RHS). 2 ADP is converted into ATP and along with that 2NADH are also produced. Thus the other options could be ruled out as they are saying different numbers of ATP molecules and Carbon dioxide.