Use the Following Information to Answer the Question

question 68

Multiple Choice

Use the following information to answer the question.
"The native structure of hemoglobin (Hb) comprises of two α and two β subunits, each of which carries a heme group. There appear to be no previous studies that report the in-vitro folding and assembly of Hb from highly unfolded α and β globin in a 'one-pot' reaction. One difficulty that has to be overcome for studies of this kind is the tendency of Hb to aggregate during refolding. This work demonstrates that denaturation of Hb in 40% acetonitrile at pH 10.0 is reversible." (J Am Soc Mass Spectrum 2007, 18, 8-16)
Hemoglobin is ________.

• A) a tertiary protein with two polypeptides
• B) a quaternary protein with two polypeptides
• C) a tertiary protein with four polypeptides
• D) a quaternary protein with four polypeptides

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Definitions:

Leadership Styles

Refers to the various approaches and methods leaders use to motivate, guide, and manage their teams.

Sequence

A specific order in which related events, movements, or things follow each other.

Prototype Matching Hypothesis

A theory suggesting that patterns of recognition are based on how closely stimuli match cognitive prototypes, or idealized examples, in memory.

Agentic

Pertaining to an agent or someone who acts; relating to actions that result from one's own choices and decisions, rather than external forces.