What Mechanism Do Most Retroviruses, but Not HIV, Use to Get

question 13

Multiple Choice

What mechanism do most retroviruses, but not HIV, use to get their genome into the host cell nucleus?

• A) They actively inject their genome into the nucleus through the nuclear pore complex.
• B) These viruses do not need to enter the nucleus to replicate.
• C) They attach their genome to importin proteins which carry them into the nucleus.
• D) They wait until the cell enters mitosis and the nuclear envelope breaks down.
• E) The genome is bound to viral proteins that contain nuclear localization signals that move the genome through the nuclear pore complex.

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Definitions:

Pension Discount Rate

The interest rate used to determine the present value of future pension liabilities.

Current Cash Flows

The money that is moving in and out of a business in the present time, especially as it pertains to operating activities.

Past Service Costs

Costs related to pension plan benefits earned by employees in prior periods, which are recognized in the current period due to plan amendments or changes.

Actuarial Gains and Losses

Gains or losses that arise from the adjustment of assumptions or the application of actuarial models differently over time in evaluating a company's pension liabilities.