Home
Flashcards
Preview
Exam 1 (Biochemistry I)
Home
Get App
Take Quiz
Create
What is ATP?
adenosine triphosphate; ribose sugar with cyclic amine and phosphate group
Why is NADPH a dinucleotide?
it has 2 nucleotides
What is high fidelity?
organisms reproduce virtually identical copies of themselves
What are biomolecules?
carbon compounds
What's a linear alphatic molecule?
stearic acid
What's a cyclic molecule?
cholesterol
What's a planar molecule?
chlorophyll
What is chlorophyll?
porphyrin + Mg2+
What is hemoglobin?
porphyrin + Fe
What is the structural organization of complex biomolecules?
metabolites and macromolecules- organelles-membranes-cells
How much energy is in noncovalent interactions?
4-30 kJ/mol
How much energy is in covalent interactions?
300-400 kJ/mol
Equation for Kw
Kw=[H+][OH-]=1.0x10^-14
Equation for pH
pH=-log[H+]
Equation for pOH
pOH=-log[OH-]
Equation for [H3O+]
10^-pH
Equation for [OH-]
10^-pOH
Equation for Ka
Ka=[H+][A-]/[HA]
Equation for pKa
pKa=-logKa
What does a large Ka mean?
lots of dissociation
Henderson-Hasselbalch Equation
pH=pKa+log([A-]/[HA])
What is the principal buffer system of the cells?
the phosphate buffer system
How do you choose a buffer?
suitable pKa, no interference with the reaction, suitable ionic strength and solubility, no biological activity
What is the equation for energy?
ΔE= sum of the heat (q) + work (w)
What is the equation for enthalpy?
ΔH= ΔE
What does it mean to be endothermic?
ΔH>0
What does it mean to be exothermic?
ΔH<0
What is entropy a measure of?
disorder
What is the equation for Gibbs free energy?
ΔG= ΔH-TΔS
What does it mean to be endergonic?
ΔG<0
What does it mean to be exergonic?
ΔG>0
What is another equation for Gibbs free energy?
ΔG= G°+RTlnKeq
What does it mean when ΔS<0?
the final state is more ordered; unfavorable
What does it mean when ΔS>0?
the final state is less ordered; more favorable
What is ΔG dependent on?
reactants and reaction conditions (pH, temperature, pressure, etc.)
NADH
NAD+
What does NADH stand for?
Nicotinamide-adenine dinucleotide
Author
gbiebs
ID
365687
Card Set
Exam 1 (Biochemistry I)
Description
Updated
2024-09-09T00:19:19Z
Show Answers
Home
Flashcards
Preview