EXAM 2 - BIOS 242 – Microbial Growth,
Metabolism, And Environmental Factors
Impacting Microorganisms | Comprehensive
Questions and Verified Answers | 100% Correct |
2026/2027 Update - Chamberlain
This BIOS 242 Exam 2 for Chamberlain College of Nursing focuses on
microbial growth, metabolism, and environmental factors impacting
microorganisms. Key topics include growth phases (lag, exponential,
stationary, death), temperature adaptations (psychrophiles, mesophiles,
thermophiles), nutritional patterns (photoautotrophs,
chemoheterotrophs), and enzymatic function.
Key Exam 2 Study Topics
Normal Growth Curve Stages: Understanding the kinetics
of bacterial growth, including lag, exponential (log), stationary, and death
phases.
Environmental Factors for Growth: Optimal
temperature ranges for psychrophiles (below 15°C), psychrotrophs (),
and mesophiles).
Microbial Nutrition: Definitions of photoautotrophs (sunlight),
chemoautotrophs (inorganic chemicals), and chemoheterotrophs
(organic compounds).
Microbial Ecology: Adaptations to high salt (halophiles) and
high hydrostatic pressure (barophiles).
Enzyme Function: The role of enzymes as biological catalysts,
focusing on how they lower activation energy.
1
, Quiz_________________?
what is a heterotroph? -
Answer
organism that must obtain its carbon in organic form
Quiz_________________?
what is an autotroph? -
Answer
an organism that uses inorganic CO2 as its carbon source
Quiz_________________?
what is a phototroph? -
Answer
microbes that photosynthesize
Quiz_________________?
what is a chemotroph? -
Answer
microbes that gain energy from chemical compounds
2
, Quiz_________________?
what is the temperature range for the optimal rate of growth for a psychrophile? -
Answer
0-15 degrees Celsius
Quiz_________________?
what is the temperature range for the optimal rate of growth for a mesophile? -
Answer
20-40 degrees Celsius
Quiz_________________?
what is the temperature range for the optimal rate of growth for a thermophile? -
Answer
45-80 degrees Celsius
Quiz_________________?
what does a barophile require for growth? -
Answer
high hydrostatic pressure
Quiz_________________?
3
, what is an example of a barophile? -
Answer
deep sea microbes live in 1000x atmospheric pressure
Quiz_________________?
what does a halophile require for growth? -
Answer
high concentration of salt (9-25% NaCl)
Quiz_________________?
what are enzymes? -
Answer
biological catalysts that increase the rate of a chemical reaction
Quiz_________________?
___ ___ is needed for a reaction to occur -
Answer
activation energy
Quiz_________________?
true or false: enzymes lower the activation energy -
4
Metabolism, And Environmental Factors
Impacting Microorganisms | Comprehensive
Questions and Verified Answers | 100% Correct |
2026/2027 Update - Chamberlain
This BIOS 242 Exam 2 for Chamberlain College of Nursing focuses on
microbial growth, metabolism, and environmental factors impacting
microorganisms. Key topics include growth phases (lag, exponential,
stationary, death), temperature adaptations (psychrophiles, mesophiles,
thermophiles), nutritional patterns (photoautotrophs,
chemoheterotrophs), and enzymatic function.
Key Exam 2 Study Topics
Normal Growth Curve Stages: Understanding the kinetics
of bacterial growth, including lag, exponential (log), stationary, and death
phases.
Environmental Factors for Growth: Optimal
temperature ranges for psychrophiles (below 15°C), psychrotrophs (),
and mesophiles).
Microbial Nutrition: Definitions of photoautotrophs (sunlight),
chemoautotrophs (inorganic chemicals), and chemoheterotrophs
(organic compounds).
Microbial Ecology: Adaptations to high salt (halophiles) and
high hydrostatic pressure (barophiles).
Enzyme Function: The role of enzymes as biological catalysts,
focusing on how they lower activation energy.
1
, Quiz_________________?
what is a heterotroph? -
Answer
organism that must obtain its carbon in organic form
Quiz_________________?
what is an autotroph? -
Answer
an organism that uses inorganic CO2 as its carbon source
Quiz_________________?
what is a phototroph? -
Answer
microbes that photosynthesize
Quiz_________________?
what is a chemotroph? -
Answer
microbes that gain energy from chemical compounds
2
, Quiz_________________?
what is the temperature range for the optimal rate of growth for a psychrophile? -
Answer
0-15 degrees Celsius
Quiz_________________?
what is the temperature range for the optimal rate of growth for a mesophile? -
Answer
20-40 degrees Celsius
Quiz_________________?
what is the temperature range for the optimal rate of growth for a thermophile? -
Answer
45-80 degrees Celsius
Quiz_________________?
what does a barophile require for growth? -
Answer
high hydrostatic pressure
Quiz_________________?
3
, what is an example of a barophile? -
Answer
deep sea microbes live in 1000x atmospheric pressure
Quiz_________________?
what does a halophile require for growth? -
Answer
high concentration of salt (9-25% NaCl)
Quiz_________________?
what are enzymes? -
Answer
biological catalysts that increase the rate of a chemical reaction
Quiz_________________?
___ ___ is needed for a reaction to occur -
Answer
activation energy
Quiz_________________?
true or false: enzymes lower the activation energy -
4
