A(n) is a protein produced in response to an antigen.

• antibody

• complement

• macrophage

• phagocyte

A reaction by tissues to any type of injury by swelling, pain, heat, and redness is called

• phagocytosis

• physical defense

• inflammation

• infection

Saliva and tears contain ____ an enzyme, that destroys many bacteria.

• lysozyme

• toxin

• histamine

• complement

The ____ of malaria is a mosquito.

• antibody

• pathogen

• antibody

• vector

a pathogen that passes from one host to another is said to be ___.

• infectious

• toxic

• nonspecific

• specific

Many pathogens injure the host by producing ____.

• antibodies

• pus

• toxins

• lysozyme

A person with AIDS is susceptible to all kinds of infectious diseases because HIV ___.

• destroys pathogens

• weakens the immune system

• causes an increase of antigens

• causes antibody production

Tags

NGSS.HS-LS1-3

Immunity occurs when the system recognizes a foreign substance and responds by producing ___.

• lymphocytes that make antibodies

• toxins

• antigens

• all of these

A bacterial disease that becomes difficult to cure when the bacteria ____.

• die off

• make interferons

• develop resistance to antibiotics

• produce antibodies

Which body system typically recognizes, attacks and destroys foreign cells or substances that may cause disease?

• digestive

• immune

• excretory

• respiratory