Latest 4 | BIOS 242 Exam 2 Fundamentals of Microbiology with Lab - Chamberlain What are macronutrients? ✓ Required in relatively large quantities and play a principal role in cell structure and metabolism. What are micronutrients? ✓ They are present in smaller amounts and are involved in enzyme function and maintenance of protein structure. What are heterotrophs and their carbon sources? ✓ An organism that must obtain its carbon in organic form and is dependent on other life forms. What is an autotroph and their carbon sources? ✓ They use inorganic CO2 and can convert that CO2 into carbon compounds. They are self -feeders. What are photoautotrophs? ✓ They capture energy from light rays for cell metabolism. They produce organic molecules that can be used by themselves and heterotrophs. What are chemoautotrophs and their carbon source? ✓ They use organic compounds for energy and inorganic compounds as a carbon source What are chemoheterotrophs and their carbon source? ✓ They derive both carbon and energy from or ganic compounds. The organic molecules processed through respiration or fermentation release energy into the form of ATP What is an Aerobe (Aerobic organism)? ✓ Can use gaseous oxygen in its metabolism and possesses the enzymes needed to process toxic oxygen products What is a facultative anaerobe? ✓ An aerobe that does not require oxygen for its metabolism. Can grow without oxygen. Metabolizes by aerobic respiration when oxygen is present. Adopts anaerobic metabolism (fermentation) when oxygen is absent. What are aerotolerant anaerobes? ✓ They do not utilize oxygen and survive and grow to a limited extent in its presence. What are obligate acidophiles? ✓ Organisms that require an acidic environment for growth, Molds/Yeasts tolerate acid and are common spoilage agents of pickled foods. What are alkaliphiles? ✓ They live in basic minerals. Bacteria that decompose urine create alkaline conditions. What are obligate halophiles? ✓ Require high concentrations of salt to grow What are facultative halophiles? ✓ Resistant to salt, even though they do not normally reside in high -salt environments Describe the steps of binary fission ✓ 1) Parent cell enlarges ✓ 2) Chromosomes duplicated ✓ 3) Cell envelope pulls together in the center forming a septum. ✓ 4) Cell divides into two daughter cells. Describe the ecological groups by temperature and their range. 1) Psychrophile 2) Psychrotroph 3) Mesophile 4) Thermophile 5) Extreme thermophile - 1) 15 to 15 2) 5 to 35 3) 10 to 50 (Most pathogenic) 4) 45 to 80 5) 65 to 130
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 or Stuvia-credit 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 gradexam. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
