HIV at One Time Only Infected Nonhuman Primates but Now

question 142

Multiple Choice

HIV at one time only infected nonhuman primates but now infects humans as well. Likewise, the avian flu only infected birds but now infects humans. What causes the host range of a virus to increase?

• A)The size of the virus changes over time and allows the virus to infect a different host cell.
• B)The virus integrates with another virus to gain the DNA sequences that allow infection of a new host cell.
• C)The virus gains entry into a new host cell through random mutation of the virus's genome.
• D)Changes in the human genome over time make humans more susceptible to infection by different kinds of viruses.
• E)None of the other answer options is correct.

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Definitions:

Real Assets

Physical or tangible assets that have intrinsic value due to their substance and properties, such as real estate, commodities, or natural resources.

Buying a Bond

The act of purchasing a bond, a debt security issued by entities such as governments or corporations, where the issuer owes the holders a debt and is obliged to pay interest.

Debt Relationship

The relationship between a borrower and lender, defined by the terms under which money or goods are borrowed.

Lending Money

The act of giving money to an individual or entity with the expectation that the amount will be returned, often with interest, at a later date.