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WorksheetsAgents of Disease
Total questions: 15
Worksheet time: 10mins
Infectious diseases are caused by:
poor nutrition
lack of exercise
pathogens (germs)
genetics
Which of the following are infectious diseases? Select all answers that are correct.
athlete's foot caused by a fungus
cardiovascular disease caused by an unhealthy lifestyle
AIDS caused by Human Immunodeficiency Virus
skin cancer caused by exposure to UV radiation
The "germ theory" has led to: (Select all correct answers.)
sterile medical techniques
less water filtration
decreased personal hygiene
More cooked and refrigerated food
All of the non-pathogenic (beneficial) bacteria, fungi, and viruses that live in and on your body are known as your:
vectors
microbiome
fomites
germs
Which of the following are beneficial effects of non-pathogenic bacteria living in and on your body? Choose all correct answers.
They produce vitamins that are essential to your body.
They can get out of control and become pathogenic.
They keep pathogenic bacteria from invading your body.
They help you break down food into nutrients.
An animal, such as a tick or mosquito, that carries a germ but doesn't cause the disease itself, is called a:
fomite
vector
pathogen
prion
Why is the human body an ideal place for microorganisms to live? Choose all correct answers.
There is a relatively constant temperature.
There is not a lot of water in the human body.
There are plenty of nutrients to feed on.
The human body offers very little protection from the outside environment.
How do pathogens (germs) interfere with our homeostasis? Choose all correct answers.
They physically break down cells and tissues.
They release harmful chemicals called toxins.
They feed off of the nutrients in our bodies, taking them away from us.
They make vitamins for us.
An object or surface that pathogens (germs) can live on and be transferred to people is called a:
vector
microbe
fomite
prion
Which of the following are categories of pathogens? Choose all correct answers.
bacteria
viruses
protists
fungi
parasitic worms
Which of the following is a correct statement about pathogen (germ) evolution?
All germs have evolved to be very virulent (harmful).
It is beneficial for all germs to immobilize their host (keep them from moving).
It is most beneficial for germs to evolve a balance between harmfulness and ability to spread.
All germs have evolved to be relatively harmless.
Which of the following would be considered modes of transmission? Choose all correct answers.
animal vectors
person-to-person contact
contaminated water
contaminated food
Which of the following are good ways to help prevent the transmission of infectious diseases? Choose all correct answers.
Let waste water and drinking water mix.
Undercook meat.
Wash your hands before handling food.
Put on bug spray before going on a hike in the woods.
The harmfulness of a disease is known as:
virulence
mode of transmission
the germ theory
a microbiome
The method by which a germ is spread is known as its:
virulence
mode of transmission
microbiome
prion
