Test: Bacteria
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




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?


dental cavities


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