WBR0341
| Author | [[PageAuthor::Rim Halaby, M.D. [1]]] |
|---|---|
| Exam Type | ExamType::USMLE Step 1 |
| Main Category | MainCategory::Microbiology |
| Sub Category | SubCategory::General Principles |
| Prompt | [[Prompt::The HIV virus is unique in structure compared to other retroviruses. It is spherical with a diameter of approximately 120 nm, surrounded by a viral envelope composed of a phospholipid bilayer formed when the virion buds from the infected cell. It is a diploid virus composed of positive single-stranded RNA coding for 9 viral genes. On the surface of the viral envelope are 2 proteins derived from the env gene essential for viral tropism. Which of the following represent the protein required for viral attachement and entry respectively?]] |
| Answer A | AnswerA::gp120, gp41 |
| Answer A Explanation | AnswerAExp:: |
| Answer B | AnswerB::gp41, gp120 |
| Answer B Explanation | AnswerBExp:: |
| Answer C | AnswerC::gp160, gp41 |
| Answer C Explanation | AnswerCExp:: |
| Answer D | AnswerD::gp41, gp160 |
| Answer D Explanation | AnswerDExp:: |
| Answer E | AnswerE::gp160, gp120 |
| Answer E Explanation | AnswerEExp:: |
| Right Answer | RightAnswer::A |
| Explanation | [[Explanation:: Educational Objective: |
| Approved | Approved::No |
| Keyword | WBRKeyword::HIV, WBRKeyword::attachement, WBRKeyword::entry, WBRKeyword::gp120, WBRKeyword::gp41 |
| Linked Question | Linked:: |
| Order in Linked Questions | LinkedOrder:: |