Unit 2: Metabolism and Enzymes Flashcards
The sum of all the chemical reactions occurring in an organism.
metabolism
This refers to the breaking down of a molecule.
catabolism
This process releases “potential” E found in the chemical bond between monomers.
This is an exergonic reaction because it releases heat to the environment
Think Catastrophe; breaking up things.
Catabolism
type of reaction that releases heat into the environment
exergonic
This is the assembly of molecules.
anabolism
This process requires “Kinetic” E to position molecules in away so as to create a chemical bond between monomers.
This is an endergonic reaction because it absorbs energy from the environment.
Think Anabolic steroids; these build muscle.
anabolism
type of reaction that absorbs energy from the environment.
endergonic
For living organisms, the chemical E of life is found in ___________ _______.
chemical bonds
The processes of Cellular Respiration and Digestion ________ the E for use by cells.
release
Source of all E for Earth?
sun
Why is the sun the source of energy for Earth?
The process of photosynthesis allows plants to store this solar energy in the form of chemical energy (sugar).
The study of Heat E and its properties
Thermodynamics ((The study of Heat E (Thermo) and its properties (dynamics.))
What is the First Law of Thermodynamics (Also called the Principle of the Conservation of E)?
E cannot be created nor destroyed only transformed or transferred.
What is the Second Law of Thermodynamics?
Every E transfer increases the entropy of the universe.
Sunlight(high quality E) going in and heat (low quality E)coming out; it can’t do work.
means disorder; unable to do work because it is in a low state of order.
entropy