Ch. 12 Lesson 4: Question Preview (ID: 4680)


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How was penicillin discovered?
a) Chemists found the substance in food supplies b) Bacteria contaminated a dish of the antibiotic c) The mold contaminated a dish of bacteria d) Chemists separated penicillin from the soil
Which product can be made from compounds found in petroleum?
a) plastic b) cement c) ammonia d) silk
Why shouldn\'t you mix cleaning materials?
a) they may produce inexpensive new compunds b) they may contaminate your food c) they may cause diseases to multiply d) they may cause unexpected chemical reactions
Chemists have found substances in foods that prevent diseases. What are these substances called?
a) fertilizers b) antibiotics c) medicines d) vitamins
Chains of large molecules containing identical smaller units connected together make up nylon. What is this general type of material called?
a) plastic b) polymer c) natural fabric d) metal
What does the warning label on a chemical cleanser tell you?
a) how chemists mix the chemical b) how to use chemicals safely c) how the chemical was first discovered d) how the chemical improves our lives
What is an antibiotic?
a) medicine that kills bacteria b) chemical found in food that prevents disease c) chemical that helps farmers grow healthier plants d) medicine that cures diseases cause by mold
What bacteria-killing substance did Alexander Fleming discover?
a) penicillin b) insulin c) aspirin d) vitamins
Which of the following is an example of Technology in health?
a) Penicillin b) Nylon c) Plastic d) Cement
Which of the following is an example of Technology in transportation?
a) Penicillin b) Plastic c) Chemical Cleaners d) Petroleum
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