TTU MBIO 3401: Control of Microbial Growth
(Smith) questions with complete solutions graded
A+
1. What are the nor- Sea level, temperature 20-40C, neutral pH, 0.9% salt, ample nutrients.
mal growth con-
ditions for mi-
croorganisms?
2. What are Organisms that can survive in extreme conditions outside the normal
ex-
growth window.
tremophile
s? Organisms that thrive in extremely cold environments, with temperatures
ranging from 0-20°C.
3. What are
psy- Organisms that grow best at moderate temperatures, typically
chrophiles? ranging from 15-45°C, which is around body temperature.
4. What are
Organisms that thrive in extremely warm environments, with temperatures
mesophiles
ranging from 40-80°C.
?
Organisms that can survive in extremely high temperatures,
5. What are
ranging from 65-121°C.
ther-
mophiles?
- Organisms adapted to grow at very high pressure up to 1,000 atm,
110 MaP, and
6. What are
hyper-
thermophiles?
7. What are
barophiles/piezoph15il,0e0s0?psi
- Usually are also psychrophiles because the average temperature at the
ocean floor is 2C.
8. Barotolerant Organisms that grow well over the range of 1-50 MPa.
9. Osmolarity Measure of solute molecules in a solution, inversely related to available
water.
1/
12
, TTU MBIO 3401: Control of Microbial Growth
(Smith) questions with complete solutions graded
A+
10. What are -Membrane channel proteins that facilitate rapid water transport
aqua- porins?
across the membrane after than dittusion
-They protect the cell from osmotic stress
11.
2/
12
(Smith) questions with complete solutions graded
A+
1. What are the nor- Sea level, temperature 20-40C, neutral pH, 0.9% salt, ample nutrients.
mal growth con-
ditions for mi-
croorganisms?
2. What are Organisms that can survive in extreme conditions outside the normal
ex-
growth window.
tremophile
s? Organisms that thrive in extremely cold environments, with temperatures
ranging from 0-20°C.
3. What are
psy- Organisms that grow best at moderate temperatures, typically
chrophiles? ranging from 15-45°C, which is around body temperature.
4. What are
Organisms that thrive in extremely warm environments, with temperatures
mesophiles
ranging from 40-80°C.
?
Organisms that can survive in extremely high temperatures,
5. What are
ranging from 65-121°C.
ther-
mophiles?
- Organisms adapted to grow at very high pressure up to 1,000 atm,
110 MaP, and
6. What are
hyper-
thermophiles?
7. What are
barophiles/piezoph15il,0e0s0?psi
- Usually are also psychrophiles because the average temperature at the
ocean floor is 2C.
8. Barotolerant Organisms that grow well over the range of 1-50 MPa.
9. Osmolarity Measure of solute molecules in a solution, inversely related to available
water.
1/
12
, TTU MBIO 3401: Control of Microbial Growth
(Smith) questions with complete solutions graded
A+
10. What are -Membrane channel proteins that facilitate rapid water transport
aqua- porins?
across the membrane after than dittusion
-They protect the cell from osmotic stress
11.
2/
12
