At the isoelectric pH of a tetrapeptide:
A) only the amino and carboxyl termini contribute charge.
B) the amino and carboxyl termini are not charged.
C) the total net charge is zero.
D) there are four ionic charges.
E) two internal amino acids of the tetrapeptide cannot have ionizable R groups.
Correct Answer:
Verified
Q5: Which statement is CORRECT with respect to
Q6: Of the 20 standard amino acids, only
Q7: Amino acids are ampholytes because they can
Q8: In a highly basic solution, pH =
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Q11: Which statement about aromatic amino acids is
Q12: The chirality of an amino acid
Q13: At pH 7.0, converting a glutamic
Q14: For amino acids with neutral R groups,
Q15: Which statement about cystine is CORRECT?
A) Cystine
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