BCH3023
Critical
Thinking 4
Thermal Properties of Enzymes
Optimal
Temperature
This is the best temperature for
enzymes to be active It also
indicate the fragility or stability
of their metabolic enzymes
(LibreTexts, “The Effects of PH
and Temperature on Microbial
Growth”).
When would enzymes
not be active?
If the bacteria is incubated or
expose to lower or higher
temperature than its optimum,
enzymes will not be active
(Hawaii, “Physical Factors That
Control Microbial Growth”).
Microorganism Growth Temperature
Classifications
Psychrophiles
Mesophiles
Grows between
-10˚C and 20˚C
Grows between 10˚C
and 50˚C
Thermophiles
Grows between
40˚C and 75˚C
Hyperthermophiles
Grows between
80°C and 121°C
Tankeshwar, Acharya. “Psychrophiles, Mesophiles, Thermophiles.”)
Similarities Between
DNA and RNA
A nitrogenous base, a
phosphate group, and a
pentose sugar (Arizona,
“Large Molecules Problem
Set”).
Sources
1.
“8.3: The Effects of PH and Temperature on Microbial Growth.” Biology LibreTexts, 29 May 2020,
https://bio.libretexts.org/Courses/Manchester_Community_College_(MCC)/Remix_of_Openstax%3AMicrobio
logy_by_Parker_Schneegurt_et_al/08%3A_Microbial_Growth/8.03%3A_The_Effects_of_pH_on_Microbial_Gr
owth.Large Molecules Problem Set.
http://www.biology.arizona.edu/biochemistry/problem_sets/large_molecules/06t.html.Physical Factors
That Control Microbial Growth.
https://www2.hawaii.edu/~johnb/micro/m140/syllabus/week/handouts/m140.9.1.html.Tankeshwar, Acharya.
“Psychrophiles, Mesophiles, Thermophiles.” Microbe Online, https://microbeonline.com/psychrophilesmesophiles-thermophiles/.