Chem 210 Exams 1-8 and Final Exam

Chem 210 Exams 1-8 and Final Exam Which of the following letters corresponds to the α -carbon of a fatty acid? A Correct! B C D E Question 25 3 / 3 pts The process for degrading fatty acids is commonly referred to as: A. β -degradation B. α -degradation C. Spiral D. β -spiral E. α -spiral A B C Correct! D E Question 26 2 / 5 pts (Short answer) In one step of the glycolysis pathway, a six-carbon compound is broken into two three-carbon fragments, only one of which can be further degraded in the glycolysis pathway. What happens to the other three-carbon fragment? Your Answer: In this phase, each 3 carbon suagr is converted into another 3 carbon molecule, pyruvate through a series of reactions. In these reactions 2 ATP molecules and 1 NADH are made. Because this phase takes place twice, one for each of the 3 carbon suagrs, it makes 4 ATP and 2 NADH. In step 5 of glycolysis, glucose (six-carbon) is converted to GAP and DHAP (both 3- carbons). GAP goes on in the glycolysis pathway. The other, DHAP, cannot go on through glycolysis directly; it is converted to GAP by triose phosphate isomerase. Focus on the "one step" part of the question. Question 27 5 / 5 pts (Fill in the blank) Use the following word bank to fill in the appropriate blanks. Not all word will be used; words can be used more than once. Word bank: one, two, three, four, five, six Glucose contains ___(A)_____ carbon atoms. The oxidation of a glucose molecule utilizes ______(B)______ ATP. Later, the ____(C)_____ three-carbon products of glycolysis produce ____(D)______ ATP by direct phosphorylation, which gives a net yield of two ATP. In addition, ____(E)_____ NADH are produced in glycolysis. Your Answer: A) six B) two C) two D) four E) two A) six B) two C) two D)four E) two Question 28 4 / 5 pts (Short response) Consider the fatty which has 20 carbons (below). A. (2 pts) How many cycles of β -oxidation are required? Briefly explain. B. (2 pts) How many acetyl-CoA are produced? Briefly explain. C. (1 pts) How many NADH and FADH2 are produced from β -oxidation (only) of this molecule? Your Answer: A) 20/2= 10-1= 9 B) 10 acetyl-CoA are produced because 20/2= 10 C) 6 NADH and FADH2 A. 9 cycles are required for oleic acid. Each cycle removes two carbon units. ON the final cycle, two acetyl groups are produced. B. There are 10 acetyl-CoA groups produced. Two acetyl-CoA groups on the last cycle. C.There are 9 NADH and 9 FADH2 molecules produced. One per cycle. #3 is not correct.