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Name
Date
Class
Content Practice B
LESSON 1
Diseases
Directions: Answer each question or respond to each statement on the lines provided.
1. Which term is NOT a pathogen?
A. virus
B. genetics
C. disease-causing fungus
D. disease-causing bacteria
2. What is the term for a disease that can spread from one person to another?
A. active
B. infectious
C. pathogenic
D. environmental
3. In which process is a food heated to a temperature that kills most
harmful bacteria?
A. sanitation
B. sterilization
C. vaccination
D. pasteurization
4. Which procedure did Edward Jenner develop to prevent smallpox?
A. sanitation
B. sterilization
C. vaccination
D. pasteurization
5. Which procedure, developed in the late 1800s, reduced the deaths from
infections after surgery?
A. sanitation
B. sterilization
C. vaccination
D. pasteurization
6. What was the purpose of Koch’s rules?
A. to determine the existence of viruses
B. to determine whether bacteria caused an illness
C. to determine a process for cleaning surgical tools
D. to determine the cause of a noninfectious disease
14
Immunity and Disease
Name
Date
Class
Key Concept Builder
LESSON 1
Diseases
Key Concept Why do we get diseases?
Directions: Work with a partner to answer each question or respond to each statement on the lines provided.
1. Explain how Edward Jenner developed and tested the first vaccination, although he did
not know about pathogens.
2. How did John Snow cause a decrease in new cases of cholera? What did he think was
causing the disease?
3. What are two things Louis Pasteur discovered about bacteria?
4. Name and describe the process that is based on Pasteur’s work.
5. How did Joseph Lister make surgery safer in the mid-1800s?
16
Immunity and Disease
Name
Date
Class
Key Concept Builder
LESSON 1
Diseases
Key Concept Why do we get diseases?
Directions: Complete this paragraph by choosing terms from the word bank and writing them in the correct spaces.
bacteria
healthy
identical
illness
reproduce
In 1867, Koch developed a procedure known as Koch’s rules to determine whether
caused an illness. Koch’s first rule was that the bacteria
(1.)
must be present in all organisms with the disease, but not in (2.)
organisms. Koch’s second rule was that the bacteria must (3.)
in
the lab. Koch’s third rule was that a sample of the newly grown bacteria must cause the
when it is injected into a healthy organism. Koch’s fourth
(4.)
rule was that when the suspected pathogen is removed from the infected animal and grown
in the lab, it must be (5.)
to the original pathogen.
Directions: In the space provided, complete this table by listing different types of pathogens and at least two
examples of diseases they cause.
Pathogens
Examples of Diseases They Cause
6.
7.
8.
9.
10.
11.
12.
13.