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11 Cards in this Set

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__________is the total potential energy of a system
Enthalpy
not entropy
Entropy & enthalpy are related by a 3rd type of energy termed ____________
free energy (G)
energy gratis!!
What is the amount of energy able to do work under the conditions of a biochemical reaction?
free energy (G)
energy gratis!!
By what equation are free energy, enthalpy, and entropy related?
H = G + TS, where H is enthalpy, G is free energy, S is entropy, and T is absolute temp.
4 variables.
Enzymes work best under specific conditions which are (3)___________, _____________, & ____________.
temp, pH, and ion concentration
think enzymes
A cell regulates enzyme activity in 3 ways. What are they?
1. By controlling the amount of enzyme produced.
2. By controlling the amount of substrate that is present
3. by feedback inhibition
think cell regulation
The formation of a product that inhibits an earlier reaction in the sequence of the cell regulation of enzyme activity is___________.
feedback inhibition
present tenst of fed.
In __________ the inhibitor completes with the normal substrate for binding to the active site of the enzyme.
competitive inhibition
adj for compete
________________occurs when an inhibitor forms weak chemical bonds with the enzyme.
Reversible inhibition
go backwards
Most eukaryotes & prokayotes carry out ________________, a form of cellular respiration requiring _____________.
aerobic respiration, oxygen
During aerobic respiration, nutrients are catabolized to _____________ & ____________.
carbon dioxide, water