Portage Biochemistry- Module 7 with accurate ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
detailed answers ||\\//||
A scientist uses the term flux regarding a biochemical pathway. What does flux mean? -
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correct answer✔✔Flux is the rate of flow through a biochemical pathway.
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A particular pathway breaks down proteins into amino acids. Is this an anabolic or a
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catabolic pathway? - correct answer✔✔Catabolic. This is degradation of a molecule. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
The acetyl group is connected to CoA to make Acetyl-CoA. A) What specific atom of CoA
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connects to the carbon atom on the acetyl group? B) What nucleotide base is part of CoA? -
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correct answer✔✔A) Sulfur B) Adenine ||\\//|| ||\\//|| ||\\//|| ||\\//||
Both carbohydrates and lipids are broken down into Acetyl-CoA for further processing. What
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pathway does Acetyl-CoA go to next? - correct answer✔✔Citric Acid Cycle (CAC) ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the "ETC" and what happens there? - correct answer✔✔Electron transport chain.
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NADH is converted into ATP at the ETC. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the sign (+ or -) of ΔG for the breakdown of ATP to ADP? Why is the sign important?
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- correct answer✔✔(-). A negative means spontaneous, or favorable, and is able to power
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other processes. ||\\//||
What molecule (FADH2, ATP, ADP, or CoA) is shown below? - correct answer✔✔ADP
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What are the two phases of glycolysis? How many reactions in each? - correct
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answer✔✔The preparatory phase and payoff phase. Five reactions in each. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, How many ATPs are invested in glycolysis? - correct answer✔✔2
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What is the net number of ATP gained from glycolysis? - correct answer✔✔2 (2 invested, 4
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gained, for a net of 2) ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
How many reactions of glycolysis have a single arrow "→" in their reaction equation? -
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correct answer✔✔3 ||\\//||
What is the fate of pyruvate produced in glycolysis? - correct answer✔✔Under anaerobic
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conditions, it goes to lactate or sometimes ethanol or other products to regenerate NAD+ for ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
glycolysis. Under aerobic conditions, it proceeds to the citric acid cycle.
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For one molecule of glyceraldehyde-3-phosphate, how many ATP or NADH are produced (or
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required) in the glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate step in glycolysis? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
1 NADH required
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1 NADH produced
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2 ATP produced
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You Answered 1 ATP required ||\\//|| ||\\//|| ||\\//|| ||\\//||
None of the above - correct answer✔✔1 NADH produced ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Fill in the appropriate blanks in the following sentence using the word bank. All words will
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not be used; words can be used more than once.
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Word (phrase) bank: ||\\//|| ||\\//||
Reaction 3 ||\\//||
Reaction 6 ||\\//||
detailed answers ||\\//||
A scientist uses the term flux regarding a biochemical pathway. What does flux mean? -
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correct answer✔✔Flux is the rate of flow through a biochemical pathway.
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A particular pathway breaks down proteins into amino acids. Is this an anabolic or a
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catabolic pathway? - correct answer✔✔Catabolic. This is degradation of a molecule. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
The acetyl group is connected to CoA to make Acetyl-CoA. A) What specific atom of CoA
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connects to the carbon atom on the acetyl group? B) What nucleotide base is part of CoA? -
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correct answer✔✔A) Sulfur B) Adenine ||\\//|| ||\\//|| ||\\//|| ||\\//||
Both carbohydrates and lipids are broken down into Acetyl-CoA for further processing. What
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pathway does Acetyl-CoA go to next? - correct answer✔✔Citric Acid Cycle (CAC) ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the "ETC" and what happens there? - correct answer✔✔Electron transport chain.
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NADH is converted into ATP at the ETC. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
What is the sign (+ or -) of ΔG for the breakdown of ATP to ADP? Why is the sign important?
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- correct answer✔✔(-). A negative means spontaneous, or favorable, and is able to power
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other processes. ||\\//||
What molecule (FADH2, ATP, ADP, or CoA) is shown below? - correct answer✔✔ADP
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What are the two phases of glycolysis? How many reactions in each? - correct
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answer✔✔The preparatory phase and payoff phase. Five reactions in each. ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
, How many ATPs are invested in glycolysis? - correct answer✔✔2
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What is the net number of ATP gained from glycolysis? - correct answer✔✔2 (2 invested, 4
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gained, for a net of 2) ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
How many reactions of glycolysis have a single arrow "→" in their reaction equation? -
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correct answer✔✔3 ||\\//||
What is the fate of pyruvate produced in glycolysis? - correct answer✔✔Under anaerobic
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conditions, it goes to lactate or sometimes ethanol or other products to regenerate NAD+ for ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
glycolysis. Under aerobic conditions, it proceeds to the citric acid cycle.
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For one molecule of glyceraldehyde-3-phosphate, how many ATP or NADH are produced (or
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required) in the glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate step in glycolysis? ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
1 NADH required
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1 NADH produced
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2 ATP produced
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You Answered 1 ATP required ||\\//|| ||\\//|| ||\\//|| ||\\//||
None of the above - correct answer✔✔1 NADH produced ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//|| ||\\//||
Fill in the appropriate blanks in the following sentence using the word bank. All words will
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not be used; words can be used more than once.
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Word (phrase) bank: ||\\//|| ||\\//||
Reaction 3 ||\\//||
Reaction 6 ||\\//||
