glycolysis

Question 1

glycolysis anaerobic or aerobic process?

Answer 1

Anaerobic process because oxygen is not consumed

Question 2

inputs to glycolysis

Answer 2

• a molecule of glucose
• 2 ATP

Question 3

net output from glycolysis

Answer 3

• produces 2 3-carbon molecules of pyruvate
• a net total of 2 molecules of ATP (uses 2, synthesizes 4)
• 2NADH

Question 4

how is ATP in glycolysis synthesized

Answer 4

substrate level phosphorylation

Question 5

overall goal of glycolysis

Answer 5

• break down glucose i.e. being oxidized
• extract the energy from this reduced form
  of carbon in several steps
• synthesize high ATP & NADH (an electron
  carrier)
• create pyruvate – a molecule that can be
  used in different pathways.

Question 6

phase I

Answer 6

• energy investment phase
• add phosphate group to our glucose molecule
• 2 ATP used to phosphorylate a 6C sugar with 2 negatively charged phosphate groups

Question 7

phase II

Answer 7

• energy payoff phase
• 4 ATP made by substrate level phosphorylation
  - transferring protons from phosphate to ATP… extract energy from it!`
• 4 electrons removed (from G3P) to reduce 2 NAD+ to 2 NADH

Question 8

how many electrons can each NAD+ pick up

Answer 8

2, which are carried by hydrogens