What Is the Relationship Between High Intakes of Zinc and the Bioavailability

question 99

Multiple Choice

What is the relationship between high intakes of zinc and the bioavailability of copper?

• A)There is no relationship between the intake of zinc and the bioavailability of copper.
• B)High intakes of zinc increase levels of the protein metallothionein and metallothionein binds copper,reducing copper's bioavailability.
• C)High intakes of zinc increase levels of the protein metallothionein and metallothionein transports copper in the blood.
• D)High intakes of zinc increase levels of the protein metallothionein and metallothionein binds copper,increasing copper's bioavailability.

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Definitions:

Marginal Tax Rate

The rate at which the last dollar of income is taxed, representing the increase in tax payment for every additional dollar earned.

Taxable Income

The portion of an individual or entity's income upon which taxes are levied by the government, after all deductions and exemptions are factored in.

Average Tax Rate

The proportion of total income that is paid in taxes, calculated by dividing the total amount of taxes paid by the total income.

Marginal Tax Rate

The rate at which the last dollar of income is taxed, indicating how much of any additional income will be paid in taxes.