Which stage of the HIV lifecycle involves the virus attaching to the host cell membrane?
Binding
Integration
Fusion
Reverse Transcription
The Correct Answer is A
A. Binding is the initial step where the HIV virus attaches to the CD4 receptor on the host cell's surface. This interaction is crucial for the subsequent entry of the virus into the host cell.
B. Integration occurs later in the lifecycle, after the virus has entered the host cell and its RNA is converted to DNA.
C. Fusion refers to the process where the viral envelope fuses with the host cell membrane to allow entry into the cell, which follows the binding stage.
D. Reverse Transcription is the process of converting viral RNA into DNA after the virus has entered the host cell, and is not involved in the attachment phase.
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Correct Answer is C
Explanation
A. While knowing the location of the assault may be relevant for police reports, it does not directly pertain to the client’s health and potential exposure to HIV.
B. Permission to contact the police is important for legal reasons, but the priority is to address the client's health needs first.
C. Identifying the individual who assaulted the client is critical for assessing the risk of HIV exposure and determining the need for post-exposure prophylaxis (PEP). This question directly impacts the client’s immediate health care.
D. Understanding the day and time of the assault is useful for legal documentation but is less critical than assessing potential exposure to HIV.
Correct Answer is B
Explanation
A. Blood pressure does not increase during anaphylaxis; instead, it typically decreases due to vasodilation and fluid leakage.
B. During anaphylaxis, blood vessels become more permeable, leading to the release of fluids into the tissues, which causes swelling and contributes to hypotension.
C. Blood vessels do not constrict during anaphylaxis; rather, they dilate as a part of the allergic response, resulting in decreased blood pressure.
D. While there is an immune response during anaphylaxis, white blood cells are not destroyed; rather, they are activated to respond to the allergen, leading to inflammation and other systemic effects.