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?

large volumes of air cause bacteria to change form

salivary glands cause mutations in bacterial populations

the presence of nutrients makes the mouth a favorable habitat

calcium in the teeth provides a suitable pH environment
Question 3 of 10
Raw poultry has disease causing bacteria. Which will provide people protection?

eating a balanced diet daily

cooking foods properly

visiting a doctor regularly

rinsing dishes thoroughly
Question 4 of 10
Which organism lives in the human intestine and aids in the digestivea process?

the protozoan Entamoeba coli

the fungus Trichophyton rubrum

the algae Fucus vesiculosus

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

bacteria can prevent insulin production

bacteria raise the acidity of processed foods.

some bacteria interfere with digestion
Question 6 of 10
Which factor helps spread disease causing bacteria?

access to new hosts

mutation by heat energy

low temperatures

availability of light
Question 7 of 10
Which of these conditions is caused by bacteria?



seasonal allergies

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

it is a fungus

it is a virus

it is a bacterium

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

increased red blood cell count

swollen glands or tissues

skin rashes or lesions

elevated body temperature
Question 10 of 10
some antibiotics causes digestive side effects. the side effects are the result of

the stomach wall being torn

too much water being drwn into the digestive tract

bacteria being killed in the digestive tract

the antibiotics being converted into stomach acids