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( 145. In the given the DNA without protein (d) DNA only the given flow chart, the replication of retrovirus host cell is shown. Observe it carefully and fill the blank A, B and C. up the blank A (A) Virus infects normal cell Viral RNA is introduced in host cell Viral RNA incorporates into host genome Do yoon pitagor to New Viruses are produced

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Similar Questions

Q1

Study the following statements (I - III) and select the correct option stating true (T) and false (F).

I. Proto oncogene is a normal cell growth regulator.
II. Oncogenic viruses transform cancerous cells to normal cells by binding with the host cell DNA.
III. Retrovirus incorporates genetic material from a host cell into its own genome upon infection, converting it into a viral oncogene.

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Q2

Viral DNA after being converted from viral RNA by X, incorporates into host genome to undergo replication. What is ‘X’ ?

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Q3

In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions.
(a) Fill in (1) and (2)
(b) Why is the virus called retrovirus?
(c) Can the infected cell survive while viruses are being replicated and released?

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Q4

Select the right sequence regarding replication of HIV in a cell.

i) Reverse transcription of Viral RNA to viral DNA.
ii) Viral DNA incorporationin host DNA.
iii) Trnascription of viral DNA to viral RNA.
iv) Translation of viral RNA and synthesis of viral proteins.
v) Copies of HIV viruses.

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Q5

Read the following statements regarding the HIV virus.
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B. It multiplies in helper T cells and produces progeny virus.
C. In the macrophages of the host, the RNA genome of the virus replicates to form viral DNA.
D. Reverse transcriptase becomes inactive in the host cell.
How many of the above statements are correct?

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