The immune system is involved in

The formation of antibodies within our body is called:

Both B cells and T cells of immune system are produced in:

Active immunity is

In the cell-mediated immune response, T lymphocytes divide and secrete

Solution

T-lymphocytes perform several immune functions including the release of cytokines.

Phagocytes

Solution

Phagocytes are nonspecific cells (not B and T cells) that digest non-self materials and present protein fragments of those non-self materials on their surface. They do not have antibodies.

When the receptor of a T_H cell binds to a pathogen being presented on a macrophage it

Solution

When the T_H cell binds antigen being presented on a macrophage, it secretes cytokines which activate itself and B cells.

Transfusing a personwith blood plasma proteins from a personor animal that has been actively immunized against a specific antigen provides

Solution

Passive immunity is conferred by the transfer of antibodies from one individual to another.

B lymphocytes are primarily involved in

Solution

B lymphocytes are involved in humoral immunity by producing antibodies.

Patients with HIV are susceptible to a variety of infections because

the virus produces cell surface receptors that bind to pathogens, making it easier for those pathogens to be infective.
synthesizing a DNA copy of the viral genome makes a person fell sick.
HIV attacks and destroys the T helper cells, which are central to mounting an effective immune response, making those individuals more susceptible to other infections.
HIV destroys B cells so that antibodies cannot be made in response to invading pathogens.

Solution

An HIV-infected individual is more susceptible to a variety of infections because the virus destroys T_H cells, which are essential for mounting an effective immune response. HIV does not bind to pathogens; it binds to T_H cells. HIV does not destroy B cells.

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