SBI3U
1.
Text pp. 390-399
Kingdoms: Archaebacteria and Eubacteria
a) List some of the inhospitable environments where bacteria are able to survive.
b) How may this have come about?
2. Characteristics of Bacteria
1) All bacteria are _______________-celled and ____________________.
This means their DNA is not surrounded by a ____________________.
2) Cell ______________ in bacteria are not surrounded by _____________.
3) Their DNA is in the form of a single ___________________, usually in the
shape of a ____________.
4) All bacteria reproduce asexually by ______________ _______________.
3. Structure of Bacteria (refer to p. 391)
Draw the basic structure of a bacterial cell below. Use a ruler and pencil and label it on
the right hand side. Give it a title.
4. Classification of Bacteria
Bacteria are usually classified by their:
5. Identification
Use the classification terms on p. 391 to identify the following groups of bacteria.
a)
b)
c)
d)
e)
f)
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SBI3U
Text pp. 390-399
6. Gram Stain (refer to diagram p. 392)
Describe the differences between gram positive and gram negative bacteria.
7. Nutrition
Use the information in the text to complete the schematic diagram below.
Write an explanatory phrase for each type below the diagram.
BACTERIA
Heterotrophs
Autotrophs
Photoheterotroph:
Chemoheterotroph:
Photoautotroph:
Chemoautotroph:
8. Respiration
Bacteria may release energy from nutrients with or without oxygen.
a) _______________ ______________ must have oxygen to survive.
b) _______________ ______________ can only grow in the absence of oxygen.
c) ___________________ ________________ can grow with or without oxygen.
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9. Reproduction
Asexual Reproduction
Draw four labeled diagrams to show binary fission.
Text pp. 390-399
How is binary fission different from mitosis?
Sexual Reproduction
This process is called _____________________.
How does this process increase the chances of survival for a bacterial population?
Endospore Formation
a) What is an endospore?
b) How is it formed?
10. Bacteria in Ecosystems
Explain the role of bacteria in the following cycles:
Nitrogen Cycle
Carbon/Oxygen Cycle
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SBI3U
Text pp. 390-399
11. Bacteria and Disease
Only a small percentage of prokaryotes are ________________ or ______________
causing. These bacteria produce deadly substances called _____________ in the
human body that cause disease symptoms.
Two Types of Toxins
1)
__________________________________________________________________
__________________________________________________________________
Examples
2)
__________________________________________________________________
__________________________________________________________________
Examples
Think of ways in which we are protected against bacterial disease.
12. Putting Bacteria to Work
Waste Management
Sewage Treatment
Dairy Foods
13. Antibiotic Resistance
Explain how antibiotic resistance develops in a bacterial population.
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