Download CHEM 210 Module 7 Exam Questions and Answers 2025 and more Exams Chemistry in PDF only on Docsity!
Question 2
3 / 3 pts
Question 3
3 / 3 pts
CHEM 210 Module 7 Exam Questions and Answers
Question 1
3 / 3 pts True or False: The ΔG value for a particular reaction is -78kJ/mol. This value indicates the reaction is NOT spontaneous. FALSE True or false: A biochemical metabolic pathway is a single reaction that converts starting material into products. FALSE True or false: Three ATP molecules are used in the energy-investing stage of glycolysis. FALSE
Question 4
3 / 3 pts True or False: The citric acid cycle occurs in the absence of oxygen. FALSE
Question 5
0 / 3 pts
Question 6
3 / 3 pts True or false: The β-oxidation pathway degrades both even-numbered and odd- numbered fatty acids. TRUE
Glucose Glucose-6- phosphate Fructose Fructose-6-phosphate Hexokinase
Question 10
3 / 3 pts
GLUCOSE
In glycolysis, when glucose enters a cell, it is immediately phosphorylated to form glucose-6-phosphate. The phosphate donor in this reaction is ATP, and the enzyme is . Hexokinas e Aldolase CoA Phosphohexose isomerase None of the above HEXOKINASE In the last reaction of glycolysis, ATP is formed by the direct transfer of a phosphate group from a metabolite to ADP. This process is referred to as: Substrate-level phosphorylation Protein phosphorylation Lipid phosphorylation Isomerization Photo-protein dephosphorylation
Question 12
3 / 3 pts
Question 13
3 / 3 pts
Question 14
3 / 3 pts Under anaerobic conditions, to which compound is pyruvate converted? NADH Lactate Hexokinas e GAP None of the above LACTATE How many steps are in the glycolysis pathway? 3 6 10 12 14 10 The reactions of glycolysis take place in/on the. Mitochondri a Vacuoles Ribosome Cytosol None of the above CYTSOL How is ATP used in the initial steps of glycolysis?
Question 15
3 / 3 pts Isomerization reaction Phosphorylation reaction Protein production Lipid phosphorylation None of the above PHOSPHORYLATION REACTION Which of the following is a cyclic pathway? A. CAC B. PDH C. Glycolysis D. Oxidative phosphorylation E. β- oxidation A.CAC
Question 16
3 / 3 pts
Question 17
3 / 3 pts
Besides NADH and FADH 2 , what energy molecule is produced directly in the citric acid cycle? ATP GTP CTP TTP None of the above GTP What molecule is missing in the following reaction? A. Fumarate
B. Malate
B. FAD; FADH 2
C. CO 2 ; ATP
Question 22
3 / 3 pts
Question 23
3 / 3 pts
D. NAD+; NADH
E. O 2 ; CO 2
E.O2; CO
How many phases are in the complete degradation of glucose via cellular respiration? 2 3 4 5 1 3 The PDH complex has three enzymes, which are referred to as: P, D, and H E1, E2, and E Enzyme A, Enzyme B, and Enzyme C Enzyme a, Enzyme b, and Enzyme c None of the above E1, E2, AND E Of the following, which coenzyme(s) is (are) necessary for β-oxidation? A. O 2
C. GTP
D. Both A and B E. None of the above B.FAD
Question 24
3 / 3 pts Which of the following letters corresponds to the α-carbon of a fatty acid? B
Question 26
5 / 5 pts
Question 25
3 / 3 pts The sequential process for oxidizing fatty acids to acetyl-CoA is often called: A. β-degradation B. α-degradation C. Spiral D. α-spiral E. β-spiral E. β-spiral (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? 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. Question 27
Question 28
5 / 5 pts words 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. A) six B) two C) tw o D)fou r E) two (Short response) Consider the fatty acid which has 20 carbons (below). A. (2 pts) How many cycles of β-oxidation are required for catabolism? Briefly explain.
B. (2 pts) How many acetyl-CoA are produced during catabolism? Briefly explain. C. (1 pts) How many NADH and FADH 2 are produced from β-oxidation (only) of this molecule?
