Intro To Metabolism Flashcards
(36 cards)
What is Metabolism?
the sum of all chemical reactions that involve the transfer of energy
What does metabolism do?
Its how cells create and store their energy
Do all Eukaryotic cells use the same system for metabolism?
yes
For all organisms, what is the “starting point”
The Sun
what other “starting point” is there?
heat vents
What does SCIENTIFIC LAW state?
a description of what you can expect to see
What are the rules of scientific law?
- will never explain why you see that
- it will have a mathematical equation to describe it
what is THERMODYNAMICS?
the study of energy, and energy changes
what is the 1st Law of thermodynamics?
the amount of energy in a isolated system is consistant, energy can only be transported from one form, into another
what is the SECOND law of thermodynamics?
the universe moves toward a state of higher disorder,
- to maintain a level of order, and complexity, energy must be added
t or f, all energy in biological systems follow the laws of thermodynamics
T
to maintain the order in an organized system, energy must…..
constantly be put in
What do AUTOTROPHS do
create their own energy
Give some examples of how AUTOTROPHS use light
- some photosynthesize using energy from sunlight
- some chemosynthesize using heat energy from thermal vents
where do HETEROTROPHS gain their energy from?
eating other organisms
____ is lost in the form of heat at each trophic level
energy
what is ATP
the useable state of energy in all cells
what does ATP stand for?
Adenosine Triphosphate
what is ATP made of?
a ribose sugar with a adenine base, and 3 triphosphates
explain the ATP cycle
…
where do molecules in food store chemical energy?
in their bonds
__________ break down _______-_______ molecules to produce ATP
Organisms, Carbon-based molecules
what are the most commonly broken molecules to make ATP?
carbohydrates
T or F, carbohydrates used to make ATP are stored in LARGE amounts
F
