Test: Bacteria
For
Description: Taks review
Subject: Science
Subtopic: Biology
Topic: Multiple Biology Topics
Grade: 8
Instructions: Answer all questions to get your test result.

Question 1 of 10
Some bacteria benefit mammals by helping with
 


defense


respiration


digestion


growth
Question 2 of 10
Many species of bacteria are in the mouth. Which explains the variety in the mouth?
 


calcium in the teeth provides a suitable pH environment


salivary glands cause mutations in bacterial populations


large volumes of air cause bacteria to change form


the presence of nutrients makes the mouth a favorable habitat
Question 3 of 10
Raw poultry has disease causing bacteria. Which will provide people protection?
 


visiting a doctor regularly


rinsing dishes thoroughly


eating a balanced diet daily


cooking foods properly
Question 4 of 10
Which organism lives in the human intestine and aids in the digestivea process?
 


the algae Fucus vesiculosus


the fungus Trichophyton rubrum


the protozoan Entamoeba coli


the bacterium Escherichia coli
Question 5 of 10
Milk has lactose, yogurt contains live bacteria. What does this information demonstrate?
 


some bacteria are beneficial to human health


some bacteria interfere with digestion


bacteria can prevent insulin production


bacteria raise the acidity of processed foods.
Question 6 of 10
Which factor helps spread disease causing bacteria?
 


mutation by heat energy


availability of light


low temperatures


access to new hosts
Question 7 of 10
Which of these conditions is caused by bacteria?
 


AIDS


dental cavities


colds


seasonal allergies
Question 8 of 10
Streptococcus infection causes pain and fever. Strep can be controlled by antitiotics wh
 


it is a bacterium


it is a virus


it is a fungus


it is a protozoan
Question 9 of 10
All the symptoms are associated with bacterial infection except
 


elevated body temperature


skin rashes or lesions


swollen glands or tissues


increased red blood cell count
Question 10 of 10
some antibiotics causes digestive side effects. the side effects are the result of
 


too much water being drwn into the digestive tract


the stomach wall being torn


bacteria being killed in the digestive tract


the antibiotics being converted into stomach acids