June 21

Which amino acid has a one-letter code "Y"?

• Valine

• Threonine

• Tyrosine

• Tryptophan

Which amino acid has a one-letter code "A"?

• Alanine

• Valine

• Lysine

• Arginine

Which amino acid has a one-letter code "K"?

• Serine

• Lysine

• Cysteine

• Methionine

Which amino acid has a positively charged side chain?

• Val

• Tyr

• Ala

• Arg

Both myoglobin and antibody have β-sheets

• TRUE

• FALSE

Fetal hemoglobin has a LOWER affinity to BPG

• TRUE

• FALSE

both fetal and maternal hemoglobins have α and β subunits

• TRUE

• FALSE

What is the shape of the binding curve for O2 binding to myoglobin?

• hyperbolic

• sigmoidal

• sigmoidal

• bimodal

low pH stabilizes the T state of hemoglobin

• TRUE

• FALSE

release of CO2 stabilizes the T state of myoglobin

• TRUE

• FALSE