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WorksheetsLec 10, 11, 12; ETC, REVIEW & Gluconeogenesis
Total questions: 10
Worksheet time: 5mins
Why reason best explains why a FADH2 molecule produces less ATP than NADH
It has less available energy
It enters the electron transport chain later
It is less reactive
What is the MAIN electron transport chain regulation
It's respiratory controlled as ETC is coupled to ATP synthesis and so it is limited by ADP levels
It enzymatic controlled as the ETC is limited by the amount of necessary enzymes present
It's respiratory controlled as the ETC is limited by the O2 available
What does the ETC do that facilitates oxidative phosphorylation
( think about how are ETC and oxidative phosphorylation coupled)
Release electrons to be captured as energy by ATP synthesis
Release electrons that leave the inner mitochondria and interact with ATP synthase to produce ATP
Release electrons that to oxygen that then interacts with ATP synthase to produce ATP
Release electrons that move H+ ions across the inner mitochondrial membrane creating an electrochemical gradient
Where does the ETC and oxidative phosphorylation take place
Outer mitochondrial membrane
Inner mitochondria membrane
Mitochondrial matrix
Which of these is not part of the ETC
cytochrome q
cytochrome b
cytochrome c
cytochrome c1
Which of these can act as sources of fuel for energy generation (answers all that apply)
Glucose
Pyruvate
Fatty acids
Proteins
Why does gluconeogenesis require 3 times the energy that is produced by glycolysis
Glycolysis has some irreversible reactions that are overcome by extra energy
Gluconeogeneis is an anabolic process which will mean it will always require more energy than what is released
Gylcolysis is only 1/3 efficient at energy trapping but the total glucose energy needs to be put back for gluconeogenesis
What enzyme bypasses (glucose + ATP --------------> glucose-6-phosphate + ADP) in gluconeogenesis
Hexicokinase
phosphofructokinase
Phosphoenolpyruvate carboxykinase
Glucose-6-phosphatase
What enzyme overcomes (PEP + ADP ---------------------> pyruvate + ATP) in gluconeogenesis
pyruvate kinase
phosphofructokinase and hexokinase
Pyruvate carboxylase
Phosphoenolpyruvate carboxykinase and Pyruvate carboxylase
What enzyme overcomes (fructose-6-phosphate + ATP------> fructose-1,6-bisphosphate + ADP ) in gluconeogenesis
hexokinase
phosphofructokinase
Fructose-1,6-bisphosphatase
phosphofructokinase and Fructose-1,6-bisphosphatase
