How Many Polypeptide Chains Are Present in Hemoglobin

question 63

Multiple Choice

How many polypeptide chains are present in hemoglobin?

• A) one
• B) two
• C) three
• D) four

---

Definitions:

Dependent

A person who relies on another, typically a family member, for financial support and qualifies for certain tax benefits on the supporter's tax return.

Tuition

The charge or fee for instruction, as at a private school or a college or university, often eligible for tax credits or deductions under certain conditions.

Meal Plan

A prepaid system for purchasing meals, often used in college dining halls or by individuals planning dietary needs.

Child Tax Credit

A tax benefit that allows taxpayers to reduce their tax liability on a dollar-for-dollar basis for each qualifying child under a certain age.