Exam 29: a Special Topic: Infectious Disease

A (n)________ is a global outbreak of disease.

Bacteria reproduce rapidly.It is possible for a few bacteria to grow in numbers sufficient to spoil milk left out overnight.What is the process by which bacteria reproduce?

A gentleman noticed a rash,forming a target-like design,on his arm.Subsequently,he developed pain and later arthritis.The bacterium that caused his condition was most likely spread by ________.

Tetracycline antibiotics are frequently included in commercial poultry feed.Why is the practice unwise for human health in the long run?

A new antibiotic is introduced which will only destroy organisms lacking a nuclear membrane.A dispute develops over its safety when used in people.What arguments would you use in this discussion?

Developers wish to build a road through an isolated area where few people have ever visited before.The proposed route is wet and warm with many species of wild rodents and other mammals.What issues concerning disease might this route raise?

Given the information in this chapter,why do you suppose that the rabies virus attacks mammal nervous systems but not those of crocodiles?

A pathogen is a disease-causing organism,but not all pathogens are alike.Some pathogens are more dangerous than others.When describing the relative ability of a pathogen to cause disease,we are considering its ________.

A(n)________ is an animal that carries a disease from one host to another.

What is the most effective way of killing Staphylococcus in the food you are preparing?

Infectious proteins that are heat-resistant and that cannot be destroyed by ultraviolet light or most chemicals are known as ________.

________ are disease-causing organisms that invade a person's body.

Athlete's foot is caused by a(n)________.

A camping party got lost in the wilderness for several days.They had sufficient food but misplaced their matches and could only drink the water from the clear lakes and streams in the area without boiling it.Very quickly everyone developed diarrhea that lasted the entire 8 days until they were rescued.Which type of pathogen was probably responsible?

Bacteria that normally live on or in the body and prevent other bacteria from becoming too numerous are referred to as ________.

Cholera is spread by contaminated food and water.The bacterium kills because it changes the permeability of the large intestinal cells.Which therapy would give the best chance of saving a person given the information in this chapter?

Explain how antibiotics are used to treat bacterial infections.What are some of the problems concerning the use of these drugs?

In some cultures parts of the central nervous system (e.g.,brains)of cattle are popular foods.Predict the issues that might arise from this practice.

Which of the following characteristics of a medicine might be effective in treating a herpes simplex infection with as little harm to the patient as possible?

Lyme disease is caused by a bacterium found in the bloodstream of small woodland rodents like mice or chipmunks,and is also found occasionally in deer.Yet humans get this disease without coming into direct contact with either rodents or deer.Explain the concept of a biological vector and discuss how humans contract Lyme disease.