Boundless Lecture Slides
Available on the Boundless Teaching Platform
Free to share, print, make copies and changes. Get yours at www.boundless.com
Boundless Teaching
Platform
Boundless empowers educators to engage their students
with affordable, customizable textbooks and intuitive
teaching tools. The free Boundless Teaching Platform
gives educators the ability to customize textbooks in
more than 20 subjects that align to hundreds of popular
titles. Get started by using high quality Boundless books,
or make switching to our platform easier by building from
Boundless content pre-organized to match the assigned
textbook. This platform gives educators the tools they
need to assign readings and assessments, monitor
student activity, and lead their classes with pre-made
teaching resources.
Using Boundless Presentations
The Appendix
The appendix is for you to use to add depth and
breadth to your lectures. You can simply drag and
drop slides from the appendix into the main
presentation to make for a richer lecture
experience.
Get started now at:
http://boundless.com/teaching-platform
Free to edit, share, and copy
Feel free to edit, share, and make as many copies
of the Boundless presentations as you like. We
encourage you to take these presentations and
make them your own.
If you have any questions or problems please email:
educators@boundless.com
Free to share, print, make copies and changes. Get yours at www.boundless.com
About Boundless
Boundless is an innovative technology company making education more affordable and
accessible for students everywhere. The company creates the world’s best open educational
content in 20+ subjects that align to more than 1,000 popular college textbooks. Boundless
integrates learning technology into all its premium books to help students study more efficiently
at a fraction of the cost of traditional textbooks. The company also empowers educators to
engage their students more effectively through customizable books and intuitive teaching tools
as part of the Boundless Teaching Platform. More than 2 million learners access Boundless free
and premium content each month across the company’s wide distribution platforms, including its
website, iOS apps, Kindle books, and iBooks. To get started learning or teaching with
Boundless, visit boundless.com.
Free to share, print, make copies and changes. Get yours at www.boundless.com
Culturing Microorganisms > Bacterial Population Growth
Bacterial Population Growth
• Microbial Growth Cycle
• Growth Terminology
Free to share, print, make copies and changes. Get yours at www.boundless.com
www.www/boundless.com/microbiology?campaign_content=book_228_section_62&campaign_term=Microbiology&utm_campaign=powerpoint&ut
m_medium=direct&utm_source=boundless
Culturing Microorganisms > Bacterial Population Growth
Microbial Growth Cycle
• Bacterial requirements for growth include sources of energy such as organic
carbon molecules and metal ions. Also specific temperature, pH, and the need (or
lack of need for oxygen) are important for optimal growth.
• Bacteria grow to a fixed size and then reproduce through binary fission which a
form of asexual reproduction. Under optimal conditions, bacteria can grow and
divide extremely rapidly.
• Different kinds of bacteria need different amounts of oxygen to survive.
• For microbial growth to process, microorganisms require certain nutrients
including carbon, nitrogen, phosphorus, sulfur, and metal ions.
• Various types of bacteria thrive at different temperatures.
Metabolic characteristics of microorganisms
View on Boundless.com
• Many bacteria grow best at neutral pH. However, certain bacteria can survive and
even grow in quite acid or alkaline conditions.
Free to share, print, make copies and changes. Get yours at www.boundless.com
www.www/boundless.com/microbiology/textbooks/boundless-microbiology-textbook/culturing-microorganisms-6/bacterial-population-growth62/microbial-growth-cycle-381-
Culturing Microorganisms > Bacterial Population Growth
Growth Terminology
• An autotroph, which means self-feeding or producer, is an organism that
produces complex organic compounds (such as carbohydrates and proteins) from
simple substances present in its surroundings. To produce these organic
compounds it either uses energy from light or inorganic chemical reactions.
• Photoautotrophs are a type of autotroph that use light (sunlight if they are green
plants) as their energy source.
• Chemoautotrophs are also a type of autotroph that derive energy from chemical
reactions and synthesize all necessary organic compounds from carbon dioxide.
• A heterotroph is an organism that, unlike an autotroph, cannot fix carbon and
uses organic carbon for growth. Heterotrophs use the products formed by
Metabolic characteristics of microorganisms
View on Boundless.com
autotrophs to survive.
• Photoheterotrophs are a type of heterotroph that use light for energy, but cannot
use carbon dioxide as their sole carbon source.
• Chemoheterotrophs are a type of heterotroph that are unable to fix carbon and
form their own organic compounds so they must use products formed by
autotrophs.
Free to share, print, make copies and changes. Get yours at www.boundless.com
www.www/boundless.com/microbiology/textbooks/boundless-microbiology-textbook/culturing-microorganisms-6/bacterial-population-growth62/growth-terminology-382-
Appendix
Free to share, print, make copies and changes. Get yours at www.boundless.com
Culturing Microorganisms
Key terms
• Aerobe Any organism (but especially a bacterium) that can tolerate the presence of oxygen or that needs oxygen to survive.
• Anaerobe An anaerobic organism; one that does not require oxygen to sustain its metabolic processes.
• autotroph an organism that can synthesize its food from inorganic substances, using heat or light as a source of energy.
• binary fission The process whereby a cell divides asexually to produce two daughter cells.
• heterotroph An organism which requires an external supply of energy in the form of food as it cannot synthesize its own.
Free to share, print, make copies and changes. Get yours at www.boundless.com
Culturing Microorganisms
Metabolic characteristics of microorganisms
This is a flowchart to help determine how a microorganism undergoes growth development.
Free to share, print, make copies and changes. Get yours at www.boundless.com
Wikipedia. "File:Troph flowchart.svg - Wikipedia, the free encyclopedia." CC BY-SA http://en.wikipedia.org/w/index.php?title=File:Troph_flowchart.svg&page=1
View on Boundless.com
Culturing Microorganisms
Metabolic characteristics of microorganisms
This is a flowchart to help determine how a microorganism undergoes growth development.
Free to share, print, make copies and changes. Get yours at www.boundless.com
Wikipedia. "File:Troph flowchart.svg - Wikipedia, the free encyclopedia." CC BY-SA http://en.wikipedia.org/w/index.php?title=File:Troph_flowchart.svg&page=1
View on Boundless.com
Culturing Microorganisms
Which of the following are conditions that affect microbial growth?
A) Oxygen
B) All of the above answers
C) pH
D) Nutrients
Free to share, print, make copies and changes. Get yours at www.boundless.com
Culturing Microorganisms
Which of the following are conditions that affect microbial growth?
A) Oxygen
B) All of the above answers
C) pH
D) Nutrients
Free to share, print, make copies and changes. Get yours at www.boundless.com
Boundless - LO. "Boundless." CC BY-SA 3.0 http://www.boundless.com/
Culturing Microorganisms
Which of the following is NOT a type of heterotroph?
A) Photoautotrophs
B) autotrophs
C) chemoautotrophs
D) All of the above answers
Free to share, print, make copies and changes. Get yours at www.boundless.com
Culturing Microorganisms
Which of the following is NOT a type of heterotroph?
A) Photoautotrophs
B) autotrophs
C) chemoautotrophs
D) All of the above answers
Free to share, print, make copies and changes. Get yours at www.boundless.com
Boundless - LO. "Boundless." CC BY-SA 3.0 http://www.boundless.com/
Culturing Microorganisms
Attribution
• Wikipedia. "Heterotroph." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Heterotroph
• Wikipedia. "Autotroph." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Autotroph
• Wikipedia. "Chemoautotroph." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Chemoautotroph
• Wikipedia. "Phototroph." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Phototroph
• Wikipedia. "Photoheterotroph." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Photoheterotroph
• Wiktionary. "heterotroph." CC BY-SA 3.0 http://en.wiktionary.org/wiki/heterotroph
• Wiktionary. "autotroph." CC BY-SA 3.0 http://en.wiktionary.org/wiki/autotroph
• University of South Carolina. "Bacterial nutrition, growth and energy metabolism." CC BY
http://pathmicro.med.sc.edu/fox/nutrition.htm
• Wikipedia. "Bacteria." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Bacteria#Growth_and_reproduction
• Wikipedia. "Microbial metabolism." CC BY-SA 3.0 http://en.wikipedia.org/wiki/Microbial_metabolism
• Wiktionary. "Anaerobe." CC BY-SA 3.0 http://en.wiktionary.org/wiki/Anaerobe
• Wiktionary. "Aerobe." CC BY-SA 3.0 http://en.wiktionary.org/wiki/Aerobe
• Wiktionary. "binary fission." CC BY-SA 3.0 http://en.wiktionary.org/wiki/binary+fission
Free to share, print, make copies and changes. Get yours at www.boundless.com