chapter15

Question 1

Zoonotic diseases would have been transferred in which of these ways?

• from another person, either by direct contact, or via an airborne route

Question 2

brucei causes African Sleeping Sickness, and uses a dense glycoprotein coat. The host eventually makes antibodies that coat, but the T. brucei cells are able to alter the structure of the glycoprotein to evade recognition. This is an example of 

• antigenic variation 


Question 3

Which of these is an example of a focal infection? 

• an infected sebaceous gland (or boil) 


Question 4

Which of these is NOT associated with the symptom of diarrhea? Answers include: possible causative agent (name of disease) 

• All of these options can have diarrhea as a symptom. 


Question 5

Hyaluronidase is an example of a(n) 

• exoenzyme.

Question 6

After contact with a pathogen, the next step in pathogenesis is

• adhesion 


Question 7

Invasion refers to when a pathogen 

 • moves into the tissues of the host. 


Question 8

Which of these is NOT a symptom of disease? 

• fever 


Question 9

The first step in causing disease is

• exposure 


Question 10

Which of the following is NOT a virulence factor? 

• restriction enzymes 


 Question 11

Some pathogens cannot be directly transferred from an infected person to a healthy person. These are known as infectious diseases.

 • noncommunicable 


Question 12

Trypanosoma brucei uses capsules to evade phagocytosis, and uses _ host immune system. to evade recognition by the 

• antigenic variation 


Question 13

If your doctor says the pathogen causing your infection entered by a parenteral route, this means it entered through ____ 

• the skin 


Question 14

Match the terms on the left with the descriptions on the left. -osis cyto- -emia -itis [ Choose ] [ Choose ] of the skin related to a tumor inflammation related to the liver cell of the blood diseased or abnormal condition 

  • -osis → diseased or abnormal condition

  • cyto- → related to the liver cell (this one is a bit off in the choices, but closest match given)

  • -emia → of the blood

  • -itis → inflammation


Question 15

The ability of an organism to cause disease is __-

• pathogenicity


Question 16

In the , signs and symptoms decrease in severity, and number of pathogen particles is reduced.

 • period of decline 


Question 17

During the period of ____, the patient is experiencing increasing signs and symptoms of illness. This is when signs and symptoms are most severe.

 • illness 


Question 18 1 pts

An organism that causes serious illness has high, while one that causes typically only mild symptoms is said to have low (The same word fills in both blanks.) • pathogenicity 

• virulence 


Question 19

Which of these is NOT a sign of disease?

• headache 


Question 20

Which of these is a common portal of entry? Choose all that are true.

• integumentary system (skin) 

• urinary system 

• respiratory system 

• gastrointestinal system 

 

Question 21

Aflatoxin, a virulence factor made by Aspergillus, is also a __ in host cells. 

• mutagen and carcinogen 


Question 22 1 pts

Glycan gimmickry is a method used by helminths to ____. 

• they produce glycans similar to the host 


Question 23

iatrogenic diseases would have been transferred in which of these ways?

 • catheter or surgical site infection 


 Question 24 1 pt

Which of the following virulence factors are used by bacteria and fungi? 

• All of these are virulence factors used by both bacteria and fungi.


Question 25 1 pts

In the immune system activation. period, the signs and symptoms begin, and are increasing in severity, often resulting from

 • prodromal