Chapter 15

The pathogens that are not microscopic in size are (a) virus particles (c) worms (b) bacteria (d) mycoplasmas

Diseases that are caused by viruses, bacteria or other pathogens are known collectively as ..1.. diseases.

A disease that is spread from one person to another is said to be ..2..

An example of a disease caused by a bacillus is (a) meningitis (c) syphilis (b) yaws (d) tetanus

Viruses reproduce (a) in living cells (c) in quiet waters (b) on dead organic matter (d) in blood plasma

Ringworm is a disease of the skin that is caused by infection with a (a) protozoan (c) hookworm (b) fungus (d) bacterium

When germs break through the skin, certain chemicals are released from body cells that (a) kill the germs immediately (c) cause the capillaries to expand (b) seal up the wound (d) prevent pain and tenderness

The disease-producing ability of a pathogen is summed up by the term ..6..

Microorganisms that are enclosed in capsules are usually (a) phagocytic (c) harmless (b) anaerobic (d) pathogenic

By the time lymph leaves the lymph vessels and is returned to the blood, the lymph is (a) absolutely sterile (c) almost free of bacteria (b) able to destroy bacteria (d) crowded with bacteria

An injection of gamma globulins can give a person the type of immunity best described as (a) partial (c) lasting (b) temporary (d) active

The purpose of the aeration of water is to (a) remove debris (c) prevent tooth decay (b) improve the color (d) kill anaerobes

Allergy is caused by sensitizing (a) lymphocytes (c) leucocytes (b) antibodies (d) antitoxins

The ability to resist disease is known as ..11..

A malignant mass of cells is known as a (an) (a) metastasis (c) ectoplasm (b) protoplasm (d) neoplasm

Carcinogens are (a) virulent pathogens (c) contact poisons (b) immune proteins (d) cancer producers

A disease vector (a) carries the disease (c) cures the disease (b) causes the disease (d) controls the disease

The phagocytic activities of white blood cells were discovered by (a) Jenner (c) Salk (b) Metchnikoff (d) Sabin

Human body cells that ingest dead bacteria are the (a) pathogens (c) bacteriophages (b) phagocytes (d) antigens

Huge, amoeboid cells that engulf microorganisms that invade the body are the (a) eosinophils (c) erythrocytes (b) stem cells (d) macrophages

B-cells and T-cells are best classified as (a) lymphocytes (c) neutrophils (b) scavenger cells (d) macrophages

Foreign proteins that cause an immune system to react are known as ..18..

The humoral immune response produces (a) auxins (c) antibodies (b) antigens (d) autosomes

Lymphocytes are produced by (a) T-cells (c) plasma cells (b) stem cells (d) neutrophils

The organism Treponema pallidum is associated with the disease (a) asthma (c) syphilis (b) scabies (d) hepatitis

The HIV agent is best described as a (an) ..21..

IgE antibodies bind to the immune cells known as (a) T-cells (c) platelets (b) mast cells (d) scavenger cells

Histamines are closely associated with responses known as (a) infectious (c) occupational (b) allergic (d) pathogenic

The common name for Phthirus pubis is the ..24...

Cancer cells are markedly abnormal in that they (a) are generally infectious (b) are smaller than normal cells (c) are carried by ticks (d) reproduce wildly