
Biological Buffer Systems
Flashcard
•
Biology
•
KG
•
Practice Problem
•
Hard
Feruzaxon Feruzaxon
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16 questions
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1.
FLASHCARD QUESTION
Front
Almost every biological process is pH-dependent; a small change in pH produces a large change in the rate of the process.
Back
What is the significance of pH in biological processes?
2.
FLASHCARD QUESTION
Front
Enzymes and many of their substrates contain ionizable groups with characteristic pKa values.
Back
What role do ionizable groups play in enzymes and substrates?
3.
FLASHCARD QUESTION
Front
Cells maintain a specific and constant cytosolic pH, usually near pH 7, keeping biomolecules in their optimal ionic state.
Back
How do cells maintain cytosolic pH?
4.
FLASHCARD QUESTION
Front
Constancy of pH is achieved primarily by biological buffers.
Back
What is the primary means of achieving pH constancy in biological systems?
5.
FLASHCARD QUESTION
Front
The ion product of water (Kw) is derived from the equilibrium constant (K_eq) and describes the ionization of pure water.
Back
What is the ion product of water (Kw)?
6.
FLASHCARD QUESTION
Front
It relates to the dissociation of weak acids in equilibrium and helps calculate pH based on the ratio of proton acceptor to proton donor.
Back
What is the Henderson-Hasselbalch equation used for?
7.
FLASHCARD QUESTION
Front
A titration curve is the plot of the pH of the analyte solution vs. the volume of the titrant added as the titration progresses.
Back
What does a titration curve represent?
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