User:Eric Martz/Hemoglobin Quiz

From Proteopedia

Hemoglobin Quiz

You will get immediate feedback when you click Submit. The quiz below is offered to accompany the interactive tutorial Hemoglobin Molecular Structure.

1. How many bonded atoms are required to constitute a dihedral (torsion) angle, such as phi or psi?

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→	The phi dihedral (torsion) angle is defined by (1) the carboxy carbon from the previous amino acid; (2) N in the amino acid containing the phi bond; (3) Cα in the amino acid containing the phi bond; and (4) the carboxy carbon of the amino acid containing the phi bond.

Questions below may have more than one correct answer.

2. Phi and psi angles directly determine

	Primary structure.
	Secondary structure.
	Tertiary structure.
	Quaternary structure.
→	See Protein primary, secondary, tertiary and quaternary structure.

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