Herpes Viruses: Properties and Infections
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ما هو الاسم الذي يطلق على المجموعة الكبيرة من العوامل المسببة للعدوى بسبب تأثيرها على أنواع متعددة من الحيوانات ذات الدم الحار والبارد؟

  • مرض الهربس
  • مجموعات كبيرة من العوامل المسببة للعدوى
  • مجموعة الفيروسات الهربسية (correct)
  • فيروس الهربس

ما هو الهدف من استقراء فيروس الهربس في جسم المضيف؟

  • لتدمير الجسم المضيف
  • 为了منع تكرار فيروس الهربس
  • لتكاثر الفيروس داخل الجسم المضيف
  • 为了允许 الفيروس أن يبقى حيا طوال الحياة (correct)

ما هو نوع فيروس الهربس الذي يسبب آثاراً متعددة مثل مرض السرطان؟

  • فيروس الهربس من النوع الأول
  • فيروس الهربس من النوع الثالث
  • فيروس الهربس الغاما (correct)
  • فيروس الهربس من النوع الثاني

ما هو الاختلاف بين فصائل فيروس الهربسสามة؟

<p>في الخواص البيولوجية والتركيب الجينومي (D)</p> Signup and view all the answers

ما هو الوقت اللازم لظهور التأثيرات المرضية μετά من الإصابة بفيروس الهربس من النوع الأول أو الثاني؟

<p>5 أيام (A)</p> Signup and view all the answers

ما هو الأساس الذي يتم فيه تحديد علاقة فيروس الهربس مع غيره من الفيروسات؟

<p>بواسطة تحديد التسلسل الجينومي. (D)</p> Signup and view all the answers

ما هو حجم جينوم الفيروس الهرپسي؟

<p>125-229 Kb (D)</p> Signup and view all the answers

ما هو الشكل الهندسي لجزء الكابسيد في الفيروس الهرپسي؟

<p>هندسي إيكوساھيدرالي (C)</p> Signup and view all the answers

ما هو دور جينات Immediate early

<p>تحفيز كتابة جينات لاحقة (A)</p> Signup and view all the answers

ما هو السبب في أن الفيروس الهرپسي يسبب جيلاتي في الخلايا المصابة؟

<p>Presence of DNA polymerase gene (D)</p> Signup and view all the answers

ما هو دور جينات Late γ في الفيروس الهرپسي؟

<p>م код لبروتينات البنية (D)</p> Signup and view all the answers

ما هو أحد سمات الفيروس الهرپسي؟

<p>دورة إنتاج سريعة (D)</p> Signup and view all the answers

What is the characteristic of the genome of herpesviruses?

<p>It has a linear dsDNA genome (D)</p> Signup and view all the answers

What is the function of the immediate early 'α' genes in herpesviruses?

<p>They stimulate transcription of genes (C)</p> Signup and view all the answers

What is the characteristic of the reproductive cycle of herpesviruses?

<p>It has a short reproductive cycle (A)</p> Signup and view all the answers

What is the function of glycoprotein C in herpesviruses?

<p>It is a receptor binding glycoprotein (A)</p> Signup and view all the answers

What happens in the nucleus during the replication of herpesviruses?

<p>The genome is replicated, genes are transcribed, and progeny viruses are assembled (C)</p> Signup and view all the answers

What is the characteristic of the host range of herpesviruses?

<p>It has a variable host range (B)</p> Signup and view all the answers

What is a characteristic of the Herpesviridae family?

<p>They can establish latent infections. (D)</p> Signup and view all the answers

What is the significance of the latent infection property of HV?

<p>It allows the virus to persist for the lifetime of the host. (D)</p> Signup and view all the answers

What is the basis for classification of Herpesviridae into sub-families?

<p>Biological properties and genome structure. (B)</p> Signup and view all the answers

What is cell tropism in the context of Herpesviridae?

<p>The affinity of viruses to certain cells. (D)</p> Signup and view all the answers

What is the significance of phylogenetic analysis in Herpesviridae?

<p>To determine the evolutionary relationships between viruses. (C)</p> Signup and view all the answers

What is the difference in replication cycle between HSV type I and EBV?

<p>EBV can be detected after 5 days of infection. (D)</p> Signup and view all the answers

Flashcards

Herpesvirus Group

A large group of viruses affecting warm and cold-blooded animals.

Persistence of Herpesvirus

Allows the virus to remain alive throughout the host's life.

Gamma Herpesvirus

Type of herpesvirus associated with various diseases, including cancer.

Herpesvirus Strains

Differ in biological properties and genomic structure.

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Symptoms Onset

Symptoms of HSV type I or II appear about 5 days after infection.

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Genomic Sequencing

Basis for determining relationships between herpesviruses.

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Herpesvirus Genome Size

Typically ranges from 125 to 229 Kb.

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Icosahedral Capsid

The geometric shape of the herpesvirus capsid.

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Immediate Early Genes

Genes that stimulate subsequent gene transcription.

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DNA Polymerase Gene

Enables herpesvirus to replicate in infected cells.

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Late γ Genes

Code for structural proteins in herpesviruses.

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Rapid Production Cycle

Characteristic of herpesviruses, leading to quick replication.

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Linear dsDNA Genome

Type of genome found in herpesviruses.

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Immediate Early α Genes

Stimulate the transcription of other genes in herpesviruses.

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Short Reproductive Cycle

Herpesviruses reproduce quickly.

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Glycoprotein C Function

Receptor-binding glycoprotein crucial for virus entry.

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Replication in Nucleus

Process where herpesvirus genome is replicated and genes transcribed.

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Variable Host Range

Herpesviruses can infect various hosts.

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Latent Infections

Ability of herpesviruses to remain dormant within the host.

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Latent Infection's Significance

Allows herpesvirus to persist throughout the host's life.

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Herpesviridae Classification

Based on biological properties and genomic structure.

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Cell Tropism

Affinity of herpesviruses for specific cell types.

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Phylogenetic Analysis Significance

Determines evolutionary relationships between herpesviruses.

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Replication Cycle Comparison

EBV is detectable 5 days post-infection, unlike HSV type I.

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