What Hemoglobin Consists of Four Gamma Chains

question 30

Multiple Choice

What hemoglobin consists of four gamma chains?

• A) Hemoglobin H
• B) Hemoglobin Bart's
• C) Hemoglobin F
• D) Hemoglobin A₂
• E) None of the above

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Definitions:

Network Externalities

The effect on a user of a product or service that results from an increase in the number of other users of the same or compatible products or services.

Natural Monopolies

Market conditions where a single firm can supply a good or service more efficiently than any competitor due to economies of scale, hence dominating the market.

Positive Feedback

Put simply, success breeds success, failure breeds failure; the effect is seen with goods that are subject to network externalities.

Marginal Social Benefits

The additional benefits to society as a whole from producing one more unit of a good or service.