Name the type of human cell HIV attacks on its entry into the body. Explain the events that occur in the cell which further lead to cause immuno deficinency syndrome.

Name the cells HIV (Human Immunodeficiency Virus) gain entry into after infecting the human body. Explain the events that occur in these cells.

Trace the events that occur in human body to cause immunodeficiency when HIV gains entry into the body.

In human body , HIV attacks mainly the cells with

Name the two types of cells in which the HIV multplies after gaining entry into humen body.

Name the two types of cells in which the HIV multplies after gaining entry into human body.

(a) Name the stage of plasmodium that gains entry into the human body. (b) Trace the stages of in the body of female anopheles after its entry. (c) Explain the cause of periodic recurrence of chill and high fever during malarial attack in humans.

Study the diagram showing replication of HIV in humans and answer the following questions accordingly : (i) Write the chemical nature of the coat A . (ii) Name the enzyme B acting on X to produce molecule 0 . N ame 0 . (iii) Mention the riame of the host cell D the HIV attacks first when it enters into the human body. (iv) Name the two different cells the new viruses E suibsequently attack.

Name the stage of cell cycle at which one of the following events occur Crossing over between homologous chromosomes takes place

Name the stage of cell cycle at which one of the following events occur Centromere splits and chromatids separate.

Name the stage of cell cycle at which one of the following events occur Pairing between homologous chromosomes takes place.