harmful bacteria

harmful bacteria

With so many species of bacteria, some are bound to be harmful. Harmful bacteria can make you sick. They can also ruin food and be used to hurt people.


There are also ways that bacteria can be harmful to humans and other animals. Bacteria are responsible for many types of human illness ( Figure 1.1), including: Strep throat Tuberculosis Pneumonia Leprosy Lyme disease Luckily most of these can be treated with antibiotics, which kill the bacteria. It is important that when a medical doctor prescribes antibiotics for you, you take the medicine exactly as the doctor tells you. You need to make sure the bacteria is killed.



KidsHealth Food Poisoning at http://kidshealth.org/kid/ill_injure/sick/food_poisoning.html . 1. What are the common bacteria that cause food poisoning? 2. What steps can you take to keep your food safe?

food contamination

Bacterial contamination of foods can lead to digestive problems, an illness known as food poisoning. Raw eggs and undercooked meats commonly carry the bacteria that can cause food poisoning. Food poisoning can be prevented by cooking meat thoroughly, which kills most microbes, and washing surfaces that have been in contact with raw meat. Washing your hands before and after handling food also helps prevent contamination.


Some bacteria also have the potential to be used as biological weapons by terrorists. An example is anthrax, a disease caused by the bacterium Bacillus anthracis. Inhaling the spores of this bacterium can lead to a deadly infection, and, therefore, it is a dangerous weapon. In 2001, an act of terrorism in the United States involved B. anthracis spores sent in letters through the mail.

instructional diagrams

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bacteria can be used as a weapon.

-->  a. true

b. false

bacteria are so small, and there are so many, that they cannot be killed.

a. true

-->  b. false

which diseases are caused by bacteria?

a) strep throat

b) pneumonia

c) leprosy

-->  d) all of the above

lyme disease can be treated with

-->  a) antibiotics

b) aspirin

c) advil

d) anti-lyme

what foods may cause food poisoning?

a) scrambled eggs and raw meat

-->  b) raw eggs and undercooked meat

c) raw meat and spoiled eggs

d) steak and eggs

which of the following is an example of a biological weapon?

-->  a) anthrax

b) anathrax

c) antibiothrax

d) anaphase

what part of a bacterium can be deadly?

a) the cell wall

b) the cytoplasm

-->  c) the spores

d) the nucleus

diagram questions

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