33. During Animal Viruses multiplication, the synthesis of the RNA molecules. Wh

Question

33. During Animal Viruses multiplication, the synthesis of the RNA molecules. What is the difference between a positive sense and negative sense RNA molecule? A. One will be able to replicate while the other will produce a dead' virus B. One will be able to translate to protein while the other will need to be converted first C. One will be using the host nucleotides to build enzymes while the other will be using them for protein synthesis D. One will be a virulent virus the other will be without virulence factors 34. Which of the following correctly describes the appearance of the Herpes viruses are? A. It is an enveloped virus, with an icosahedral capsid that protects a double stranded DNA core B. It is a non-enveloped virus, with a single stranded RNA core C. It is an enveloped virus with a polyhedral capsid that protects a double stranded RNA core D. It is an non-enveloped virus, with a single stranded DNA core 35. Which is NOT true about the AIDS epidemic? A. Most transmission worldwide is vertical (mother to baby) B. We estimate that about 35 million people are currently infected worldwide C. The epidemic in Africa has been going on longer than the one in the US D. In some countries over 35% of childhood deaths are caused by AIDS HIV 36. What are the criteria set out to diagnose someone with AIDS other than being positive? A. They have a CD4 count less than 200 per ml of blood B. Their CD4 cells are less than 14% of all lymphocytes C. They have or have had one or more CDC listed AIDS defining illnesses D. Any one of the above would meet diagnosis criteria for AIDs ( aka ALL of the Above) hich of the following viral families contains the virus that causes an infection of the salivary glands that can be prevented with a vaccine? A. Coronaviruses B. Paramyxoviruses C. Arboviruses D. Retroviruses 37. W 38. Yaws, Pinta, and Bejel are all diseases that A. are slow, progressive skin diseases that can spread to deep tissues. B. are sexually transmitted. C. are caused by arthropod vectors. D. are caused by Vibrio species. E. are respiratory tract infections.

Explanation / Answer

Single stranded RNA viruses can be classified as positive and negative based on polarity of RNA.Viral replication can be explained as initially virion enters the host cell and releases negative RNA into host's cytoplasm.This negative RNA must be converted to positive RNA by using its own RNA replicase.Then positive RNA acts as mRNA and get translated to viral protein using host's ribosome.

Herpes virus is a family of virus that infects human. The symptoms will be blisters in the skin or mucous membrane of mouth, lips, nose or genitals. The viral structure consists of double stranded linear DNA encapsulated with icosahedral capsid protein which inturn is wrapped with lipid bilayered envelope.

As now-a-days if the HIV is diagnosed in pregnant mother, antiretroviral treatment has been given to mother during and after pregnancy which might restrict HIV transmission from mother to baby.So most transmission worldwide is vertical is not true.

The CD4 count in normal person will be 500 to 1500 per ml of blood but if the count drops below 200 per ml means then the person has been diagnosed with AIDS.

Paramyxo virus causes Mumps during childhood characteried by swelling of salivary glands.According to reports in Unites states 99% of decrease in mumps can be seen with MMR vaccination.

Question number Answer Explanation 33 B

Single stranded RNA viruses can be classified as positive and negative based on polarity of RNA.Viral replication can be explained as initially virion enters the host cell and releases negative RNA into host's cytoplasm.This negative RNA must be converted to positive RNA by using its own RNA replicase.Then positive RNA acts as mRNA and get translated to viral protein using host's ribosome.

34 A

Herpes virus is a family of virus that infects human. The symptoms will be blisters in the skin or mucous membrane of mouth, lips, nose or genitals. The viral structure consists of double stranded linear DNA encapsulated with icosahedral capsid protein which inturn is wrapped with lipid bilayered envelope.

35 A

As now-a-days if the HIV is diagnosed in pregnant mother, antiretroviral treatment has been given to mother during and after pregnancy which might restrict HIV transmission from mother to baby.So most transmission worldwide is vertical is not true.

36 A

The CD4 count in normal person will be 500 to 1500 per ml of blood but if the count drops below 200 per ml means then the person has been diagnosed with AIDS.

37 B

Paramyxo virus causes Mumps during childhood characteried by swelling of salivary glands.According to reports in Unites states 99% of decrease in mumps can be seen with MMR vaccination.

38 A Yaws, pinta and Bejel are infections caused by bacterium that can be spread by close contact of skin infected person usually in children living in poor hygenic conditions

Related Questions

Navigate

• Browse (All)
• Browse 3
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.