Lecture 2 Flashcards
How many irreversible glycolytic reactions are there?
3
Name the 3 irreversible pathways of glycolysis
PFK ( F6P to FBP)
hexokinase (glucose to G6P)
Pyruvate kinase (PEP to pyruvate)
Where does glycolysis occur?
cytoplasm
true or false; glycolysis occurs in the absence of oxygen?
true
true or false; glycolysis is a necessary first step in aerobic respiration and fermentation
true
how much ATP and NADH are produced?
2 ATP and 2 NADH for every glucose molecule
what are the 2 phases of glycolysis?
energy investment phase and energy generation phase
What does it mean by catabolic reaction?
break down large molecule
provide energy for ATP
What does it mean by ANAbolic reaction
use small molecule to build large ones
require energy
What is the first law of thermodynamics
energy can neither be created nor destroyed although maybe changed from one form to another
What is the second law of thermodynamics
the entropy of any closed system if not in thermal equilibrium almost always increases
What does it mean by Gibbs Free energy
The energy (G) that can be converted to work at a uniform temperature and pressure throughout a system
What does reducing power mean?
refers to the addition of electrons to NAD+ to produce NADH
How many ways does glycolysis produce energy?
2
What are the 2 ways that glycolysis produces energy?
directly via substrate level phosphorylation
indirectly by the reduction of NAD+ to NADH (NAD+ captures released electrons to produce NADH)
