Bio134S2017 Lecture 09 MT 1.pptx - Welcome to Biology 134/135 Microbiology Question A bacterium with unusually thick sturdy cell walls that normally

Bio134S2017 Lecture 09 MT 1.pptx - Welcome to Biology...

This preview shows page 1 - 11 out of 29 pages.

Welcome to Biology 134/135 Microbiology
Image of page 1
Question: A. The cell will suffer plasmolysis. B. The cell will shrink. C. Water will flow into the cell. D. The cell will undergo osmotic lysis. E. Water will flow out of the cell. A bacterium with unusually thick, sturdy cell walls that normally lives under extremely saline conditions (high salt) is placed into ordinary sea water (moderate salt). Which of the following is the most likely to occur?
Image of page 2
Announcements • The internet report is due online on February 10 th . Assignment details are on Canvas. • The first midterm exam is February 24 th .
Image of page 3
Types of growth media Selective media: - Antibiotics (+/- resistance) - Nutrients (+/- nutritional ability) - Salt (+/- halophiles) - pH (+/- acidophiles or alkaliphiles) - Oxygen (+/- obligate aerobes/anaerobes)
Image of page 4
Types of growth media Selective media:
Image of page 5
Types of growth media Differential media: - Breakdown of a substance in plate - Production of a substance (dye, etc) - pH change
Image of page 6
Types of growth media Differential media: pH
Image of page 7
Types of growth media Differential media: Hemolysis
Image of page 8
Example of differential media Listeria
Image of page 9
Take home message: Bacteria can grow exponentially, but are often limited by their surroundings Bacteria in general can grow almost anywhere, but particular bacteria may have very specific growth conditions We can recreate growth conditions for many types of bacteria with different kinds of media
Image of page 10
Image of page 11

You've reached the end of your free preview.

Want to read all 29 pages?

  • Spring '14
  • LeslieA.King

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors