Lec 10, 11, 12; ETC, REVIEW & Gluconeogenesis

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

Tags

NGSS.HS-LS1-7

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

Tags

NGSS.HS-LS1-7

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

Tags

NGSS.HS-LS1-7

Where does the ETC and oxidative phosphorylation take place

• Outer mitochondrial membrane

• Inner mitochondria membrane

• Mitochondrial matrix

Tags

NGSS.HS-LS1-7

Which of these is not part of the ETC

• cytochrome q

• cytochrome b

• cytochrome c

• cytochrome c1

Tags

NGSS.HS-LS1-7

Which of these can act as sources of fuel for energy generation (answers all that apply)

• Glucose

• Pyruvate

• Fatty acids

• Proteins

Tags

NGSS.HS-LS1-7

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