MICR221 EXAM QUESTIONS WITH REVISED ANSWERS
Commensal/Mutualistic bacteria of the GI tract - Answer-Lactobacillus, Bacteriodes, Bifidobacterium, Clostridium, Escherichia, Enterococcus
Anaerobes in large intestine - Answer-Bacteriodes, Bifidobacterium, and Clostridium
Bacteria adapted to sto...
MICR221 EXAM QUESTIONS WITH
REVISED ANSWERS
Commensal/Mutualistic bacteria of the GI tract - Answer-Lactobacillus, Bacteriodes,
Bifidobacterium, Clostridium, Escherichia, Enterococcus
Anaerobes in large intestine - Answer-Bacteriodes, Bifidobacterium, and Clostridium
Bacteria adapted to stomach's low pH - Answer-Helicobacter
Urease - Answer-Enzyme used for acid tolerance by Helicobacter
Aerobes - Answer-Require molecular oxygen and final electron acceptor is oxygen.
Anaerobes - Answer-Prefer absence of oxygen. also known as fermentation
Final electron acceptor in anaerobic respiration - Answer-is exogenous, e.g. nitrate,
sulphate.
Electron acceptor in fermentation - Answer-pyruvate
fermentation involves - Answer-ATP is synthesized by substrate level phosphorylation.
Facultative anaerobes - Answer-Can grow with or without oxygen
Microaerophiles - Answer-require little oxygen but not too much
Capnophiles - Answer-Require increased levels of carbon dioxide.
psychrophiles - Answer--5 to 17 degrees
psychrotrophs - Answer--2 to 35 degrees
mesophiles - Answer-15 to 45 degrees
thermophiles - Answer-42 to 80 degrees
hyperthermophiles - Answer-65 to 105 degrees
Symbiosis - Answer-Living together of organisms
Four types of Symbiosis - Answer-Commensalism, Mutualism, Pathogenesis and
Parasitism
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Perfectscorer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £10.85. You're not tied to anything after your purchase.
