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Advanced Biochemistry Exam 1 Questions
And Answers (Guaranteed A+)
Catabolism - answer✔Metabolic pathways that break down molecules, releasing energy.
Anabolism - answer✔Metabolic pathways that construct molecules, requiring energy.
Gluconeogenesis - answer✔The formation of glucose from noncarbohydrate sources.
Occurs mostly in liver and kidneys.
Helps maintain glucose levels in blood, which can be extracted for metabolic needs.
What is the starting material for gluconeogenesis? - answer✔Oxaloacetate
What are some non-carbohydrate precursors that are converted to oxaloacetate in
gluconeogenesis? - answer✔Lactate and Pyruvate
What two amino acids cannot be broken down into oxaloacetate? What are they broken down
into? - answer✔Leucine and Lysine, Acetyl-CoA.
How do gluconeogenesis enzymes relate to those of glycolysis? - answer✔Some of the same
reversible enzymes of glycolysis are used in gluconeogenesis.
What is the advantage of catabolism and anabolism being separate pathways? - answer✔They
can both be thermodynamically favored and independently controlled.
Pyruvate Carboxylase - General Info - answer✔1st Step
Gluconeogenesis
ATP driven
Substrates: Pyruvate and HCO3-
Forms oxaloacetate
What vitamin is used by Pyruvate Carboxylase in the first step of gluconeogenesis? What does it
do? - answer✔Biotin (B7). It functions as a CO2 carrier
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