Topic 3.4 - Cellular Energy 𖦹⋆｡°✩ Flashcards
what is sunlight the main energy input for
living systems
what do autotrophs do
autotrophs capture energy from physical sources (ex. sunlight) or chemical sources and transform that energy into energy sources usable by all cells
is all energy usable
some energy is unusable and is often lost as heat
what law of nature does life not violate
life does not violate the second law of thermodynamics
what is the law of thermodynamics
every energy transfer increases the disorder of the universe. living cells are not at equilibrium; there is a constant flow of materials in and out of the cell
how do cells manage energy resources
by energy coupling. energy releasing processes drive energy-storing processes
what is a sequential reaction
within a chemical pathway, the product of one reaction can serve as a reactant in a subsequent reaction
what do sequential reactions allow for
allow for a more controlled and efficient transfer of energy
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