Researchers Analyze the HIV Viral Structure and Replication Cycle for New

question 110

Multiple Choice

Researchers analyze the HIV viral structure and replication cycle for new drug targets.  They find the virus encodes a large glycoprotein, which gets cleaved into 2 subunits, the surface and transmembrane subunits.  These subunits remain noncovalently bound to each other in the virion.  Upon activation of the surface protein, conformational changes occur in the transmembrane subunit exposing the functional inner core.  A novel drug is developed that selectively binds and prevents normal functioning of the transmembrane subunit, interfering with the normal viral replication cycle.  This agent most likely directly inhibits which of the following viral processes?

• A)Attachment of the virus to target cell surface
• B)Budding and release of a new virus particle
• C)Cleavage of polyproteins by viral encoded enzyme
• D)Entry of the viral core into host cytoplasm
• E)Integration of the viral DNA into host genome
• F)Synthesis of DNA from viral RNA template
• G)Transcription of mRNA from proviral DNA

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Definitions:

Phallic Stage

A stage in Freudian psychosexual development, occurring in early childhood, where the libido's focus is on the genital area, and the beginnings of sexual identity are formed.

Libido

A phrase in the context of psychoanalytic theory that refers to the libido or sexual longing.

Sexual Energy

The energy associated with sexual desires and activities.

Repressed Memories

Experiences that are unconsciously set aside because they carry a high emotional burden of stress or trauma.