Class Notes (835,073)
Canada (508,912)
Microbiology (210)
MICR 2420 (131)
Lecture 3

MICR 2420 Lecture 3: Lecture 3_Bacteria
Premium

5 Pages
48 Views
Unlock Document

Department
Microbiology
Course
MICR 2420
Professor
Lucy Mutharia
Semester
Winter

Description
Lecture 3: Bacteria Why is microbiology important? Beer, wine, cheese Soy sauce Yogurt Tabasco sauce And other fermented foods Agriculture Medicine Biotechnology Astrobiology Buildabacterialcell workshop 3. Outer membrane option: Gram negative What you get: DNA Ribosomes Cytoplasm Plasma membrane Thin cell wall (1 or 2 sheets of peptidoglycan) Outer membrane (contains lipopolysaccharide) There are antigens sticking out of the cell Basic Gram Negative Option Pros Able to defend itself against a wide range of toxic molecules due to the outer membrane The membrane has pores that are connected to pumps that pump out harmful material More resistant to antibiotics Has a builtin storage compartment the periplasmic space Space for bacteria to store preformed molecules Resistant to osmotic lysis A wide range of pleasing shapes to choose from Same shapes as gram positive Available in Gram stained red! Do not stain violet since there is not enough peptide Cons Toxic if not handled correctly Requires a bigger genome to make the more complex cell wall can be expensive to maintain Gram Negative Models Ecoli is a standard microbe used in labs Some strains of helicobacter pylori cause stomach ulcers Stomach ulcers can be cured by antibiotics Is the first microbe listed as a carcinogen Causes cancer by interacting with host cells
More Less

Related notes for MICR 2420

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit