Biochem module 8 questions and answers latest top score.

Biochem module 8 questions and answers latest top score. True or False: The majority of reactions of the urea cycle occur in the cytosol. - correct True or False: FADH2 yields 2.5 ATP molecules after donating electrons and hydrogen atoms to the electron transfer chain (ETC). - correct answers.False True or False: ATP is invested in the urea cycle. - correct answers.True True or False: There are five complexes associated with the ETC. - correct answers.False True or False: In the production of ATP via ATP synthase, the H+ ions move from the mitochondrial matrix to the intermembrane space. - correct answers.False The urea cycle involves _________ reactions (only those in the cyclic portion of the process). - 4 - 5 - 6 - 8 - 10 - correct answers.- 4 Which amino acids are involved in the urea cycle? A. Ornithine B. Aspartate C. Threonine D. Both A and B E. Both A and C - correct answers.D. Both A and B Fumarate reenters the mitochondrion as which of the following molecules? - Malate - Ornithine - Citrulline - Fumarase - Ammonia - correct answers.- Malate Urea is useful for excreting nitrogen from cells due to its: - Ability to hydrogen bond with water - Ability to form ions - Large size - Low melting point - None of these - correct answers.- Ability to hydrogen bond with water Which component of the urea cycle is also a member of the CAC? - Fumarate - Malate - Acetyl-CoA - Citrate - None of the above - correct answers.- Fumarate Oxidative deamination results in the removal of __________ from amino acids. A. N2 B. NH4+ C. NO2 D. NH2 E. NH3 - correct answers.B. NH4+ The following chemical species is __________. - correct answers.Urea NADH donates electrons and H+ to complex ______. I II III IV V - correct answers.I Which of the ETC complexes do pump H+ ions? Complex I Complex II Complex III Both A and B Both A and C - correct answers.Both A and C What protein shuttles electrons from Complex III to Complex IV? - NADH dehydrogenase - Arginase - Fumarase - Cytochrome B - Cytochrome C - correct answers.- Cytochrome C What molecule transfers electrons and H+ from both Complex I and Complex II to Complex III? - NADH - FAD - Cytochrome C - Cytochrome B - CoQ - correct answers.- CoQ In what portion of the mitochondrion does the CAC take place? - Matrix - Intermembrane space - Inner membrane - Outer membrane - Both B and C - correct answers.- Matrix At which complex does the following reaction take place? O2 + 4e- + 4H+ → 2H2O Complex I Complex II Complex III Complex IV Both A and B - correct answers.Complex IV During the electron transport chain, protons are pumped from _________ in the mitochondria. - From the intermembrane space to the cytosol - From the intermembrane space to the matrix - From the matrix to the intermembrane space - From outside of the cell to the cytosol - From outside of the cell to the matrix - correct answers.- From the matrix to the intermembrane space Energy released _________________ is utilized for the synthesis of ATP. - In the formation of ATP - In the digestion of proteins through the breakdown into the carbon skeleton - In the degradation of carbohydrates - As proton flow through ATP synthase - None of the above - correct answers.- As proton flow through ATP synthase At which part of ATP synthase is ATP produced?