StudyGuideLecs6-9.pdf - This document is for your own...

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Study Guide for Lectures 6, 7, 8, and 9 Microbiology 101 Spring 2018
Terms to know
binary fission
exponential growth
planktonic growth
biofilm
endospore
psychrophile, thermophile, mesophile
pasteurization
acidophile, alkaliphile
halophile
aerobe, microaerophile, anaerobe aerotolerant
reactive oxygen species
carotenoid
catalase
autotroph
heterotroph
potential energy
chemotroph
phototroph
electron donor
electron acceptor
energy source
oxidation
reduction
redox reaction
electron carrier
NAD + /NADH
ATP
substrate-level phosphorylation (SLP)
ATP synthase
fermentation
respiration
electron transport chain (ETC)
quinone
cytochrome
flavoprotein
Iron-Sulfur protein
proton motive force (PMF)
reaction center
light harvesting center
photosystem
defined medium
complex medium
Study questions
Learning goal 1. Understand the features of biofilm and planktonic growth.
1. How does planktonic growth differ from biofilm growth?
2. Where are four places you might find microbial biofilms?
3. How many generations would it take for a bacterial population to grow from one cell to a population
of over 10,000 cells (or more)?
4. If the bacterium in question 1 had a 10 minute doubling time, about how long would this take (to go
from 1 cell to at least 10,000 cells)?
5. What are two examples of how biofilm growth may occur in the human body?

This document is for your own personal use only and may not be redistributed in any form.
Property of the University of Wisconsin
Learning goal 2. Be able to describe endospore formation and understand its purpose in starvation
survival.
6. What is the basic process for endospore formation and how does it differ from binary fission?
7. Which of the following pairs of terms would be better to describe the endospore formation process?
a. binary fission/asymmetric cell division
b. irreversible/reversible
c. not reproductive/ reproductive
d. phagocytosis/engulfment
8. Bacterial endospores function in
Learning goal 3. Be able to explain the different environmental factors that are important in
determining microbial growth.
9. How are high temperatures and low temperatures different in terms of control of microbial growth?
10. What is pasteurization?
11. Know the general classes of microbes with regard to oxygen interactions. Know what the different
types of growth in the test tubes in the figure represent and be able to explain the growth patterns for
each class of microbe.
8. What are reactive oxygen species, when do they occur, why are they important and what are two
ways cells have to deal with them?
9. An aerotolerant microbe is best described as one that is