cfu 5

When nutrients are in abundance, which hormone is being used? what cycle is favored?

• insulin, gluconeogenesis

• insulin, glycolysis

• glucagon, gluconeogenesis

• glucagon, glycolysis

If nutrients are scarce, what hormone is being used? which cycle is favored?

• insulin, gluconeogenesis

• insulin, glycolysis

• glucagon, gluconeogenesis

• glucagon, glycolysis

What happens to pfk-2 and FBPase-2 when insulin is being used? what happens to f2,6bp

• pfk-2 activated

  fbpase-2 inactivated

  f2,6bp decreased

• pfk-2 inactivated

  fbpase-2 activated

  f2,6bp decreased

• pfk-2 activated

  fbpase-2 inactivated

  f2,6bp increased

• pfk-2 inactivated

  fbpase-2 activated

  f2,6bp decreased

What happens to pfk-2 and FBPase-2 when glucagon/epi is being used? what happens to f2,6bp

• pfk-2 activated

  fbpase-2 inactivated
  f2,6bp increases

• pfk-2 inactivated

  fbpase-2 activated

  f2,6bp increases

• pfk-2 activated

  fbpase-2 inactivated

  f2,6bp decreases

• pfk-2 inactivated

  fbpase-2 activated

  f2,6bp decreases

what activates G6Pase

• glucagon

• epi

• cortisol

• G6P

which of the following induces g6pase

• glucagon

• epi

• insulin

• g6p

• cortisol

can NADH made in the cytosol dire4ctly cross the inner mitochondrial matrix

• yes

• no

What are the fates of pyruvate

• anaerobic:

  (muscle) pyruvate --> lactate

  lactate enters the membrane (liver) --> pyruvate via the cori cycle

• aerobic: pyruvate from the cytosol --> acetyl Coa

• --> alanine

• --> oxaloacetate

  mitochondria- TCA

  cytosol-glucogenic precursor

fate is determined by

• PFK-2 presence

• NAD+:NADH ratio

• oxygen pressure

• hormone presence

During anaerobic conditions, what does pyruvate make?

• acetyl CoA

• oxaloacetate

• lactate

• PEP