AP BIOLOGY

THE HUMAN IMMUNE SYSTEM

AIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The AIDS virus weakens your immune system by destroying your ____ .
A
White blood cells
B
red blood red blood cells
C
“B” Cells
D
“T” Cells
Explanation: 

Detailed explanation-1: -HIV finds the white blood cells, called CD4 cells. HIV gets inside the CD4 cell and makes copies of itself. Then, HIV kills the CD4 cell and the new HIV copies find other CD4 cells to get inside and start the cycle again. HIV kills immune system cells that help the body fight infections and diseases.

Detailed explanation-2: -HIV binds to the CD4 molecule on the surface of helper T-cells and replicates within them. This results in destruction of CD4+ T-cells and leads to a steady decline in this population of T-cells.

Detailed explanation-3: -HIV destroys CD4 T lymphocytes (helper T cells). Because of this, healthcare professionals measure CD4 levels to monitor HIV progression and AIDS. Helper T cells are crucial for immune system function and activate after encountering antigens from disease-causing microorganisms.

Detailed explanation-4: -HIV infects and deletes CD4+ T cells that normally coordinate the adaptive T-and B-cell response to defend against intracellular pathogens.

There is 1 question to complete.