There are …….types of lymphocytes performing the function in immunity?
a) two
b) three
c) four
d) five
Explanation: 1. B cells and 2. T cells or CD4 cells
Which of the following WBCs release antibodies into the body’s fluids to attack foreign antigens?
a) monocytes
b) B cells
c) T cells
d) neutrophils
Which of the following cells directly kill or destroy infected or malignant cells in the body?
a) B cells
b) T cells
c) both a and b
d) all types of WBCs
Explanation: T-cells are a type of white blood cell called lymphocytes. They help your immune system fight germs and protect you from disease. There are two main types. Cytotoxic T-cells destroy infected cells. Helper T-cells send signals that direct other immune cells to fight infection.
There are…….types of T cells.
a) two
b) three
c) four
d) five
Explanation: 1. Helper T cells and
2. Killer T cells
HIV contains………as genetic material.
a) RNA
b) DNA
c) both
d) single stranded DNA
Which of the following is unique process in HIV life cycle?
a) integration
b) translation
c) binding
d) reverse transcription
Explanation: RNAà DNA is called reverse transcription by reverse transcriptase
