week 12: Intro to Metabolism Flashcards
What is energy provided by?
e- with negative radox potential
High energy e-
What kind of power do cells need?
reductive power for anabolic processes
if you want building blocks–> need a source
What provides reductive power in cells?
high energy electrons
What element do cells need to build?
Need carbon to build cellular components
Where does all our energy come from?
The sun
How do plants synthesise macromolecules?
sunlight as energy (H+)
What happens when H+ goes to He?
gives off energy
Definition of metabolism?
catabolism + anabolism
What is catabolism?
Large complex organic molecules decomposed into smaller ones degradative oxidative enegy liberated converging
What is anabolsim?
Large complex organic molecules are constructed from small molecules Biosynthetic reductive (needs energy) energy is required diverging
What is a converging pathway?
many starting materials to a smaller number of end products
What is a diverging pathway?
A handful of amino acids to many proteins
What is oxidation?
loss
A reducing agent ie it can reduce something else
What is the most reduced/highest free energy of carbon?
alkanes > alcohol > aldehyde >carboxylic acids > CO2
What energy pathway does glucose follow?
catabolism
