medium · MCAT bio-biochem
An amino acid with an acidic side chain (such as glutamic acid) has three pKa values: 2.2 (α-carboxyl), 4.3 (side-chain carboxyl), and 9.7 (α-amino).
What is the isoelectric point (pI) of this amino acid?
- 7.00
- 6.45
- 3.25
- 5.95
Sign up free to see the explanation and track your rank →
More MCAT bio-biochem practice
- What genetic term describes a single gene influencing multiple seemingly unrelated traits?
- In the human ear, sound waves cause fluid in the cochlea to… — Which cells are responsible
- An electrophysiologist observes a neuron at its resting memb… — Which ion is primarily res
- Which structure is most likely dysfunctional?
- Which organelle would you expect to be exceptionally well-developed in these cells?
- Which molecule acts as a 'fluidity buffer' in animal cell membranes?
- A scientist is tracking the movement of a secreted protein. If the protein has just left t
- A molecule moves into a cell against its concentration gradient using energy provided by a