Question

a. How does a Human Immunodeficiency Virus (HIV) replicate in a host?

b. How does a HIV-infected patient lose immunity?

c. List any two symptoms of this disease.​

Answer 1

Answer:

When HIV infects a cell, it first attaches to and fuses with the host cell. Then the viral RNA is converted into DNA and the virus uses the host cell's machinery to replicate itself during a process called reverse transcription. The new copies of HIV then leave the host cell and move on to infect other cells.

White blood cells are an important part of the immune system. HIV infects and destroys certain white blood cells called CD4+ cells. If too many CD4+ cells are destroyed, the body can no longer defend itself against infection.

Fever.

Diarrhea.

Fatigue.

Muscle aches.

Coughing

Answer 2

Answer:

answer a)

HIV is a retrovirus, which means it carries single-stranded RNA as its genetic material rather than the double-stranded DNA human cells carry. Retroviruses also have the enzyme reverse transcriptase, which allows it to copy RNA into DNA and use that DNA "copy" to infect human, or host, cells. When HIV infects a cell, it first attaches to and fuses with the host cell. Then the viral RNA is converted into DNA and the virus uses the host cell’s machinery to replicate itself during a process called reverse transcription. The new copies of HIV then leave the host cell and move on to infect other cells.

answer b)

When (White blood cells) are an important part of the immune system. HIV infects and destroys certain white blood cells called CD4+ cells. If too many CD4+ cells are destroyed, the body can no longer defend itself against infection

answer c)

Fever.

Sore throat.

Headache.

Muscle aches and joint pain.

These are the symptoms of this disease