MICROBIOLOGY TEST CH. 7,8 TEST WITH REVISED
ANSWERS #22
What word is used to describe an organism and their cellular respiration pathways? -
correct answer Aerobic
A ________ microbe requires only inorganic nutrients and carbon dioxide as a sole
carbon source. - correct answer Autotrophic
Identify all of the general macronutrients found in a cell. - correct answer CHONPS
Phases in order for a normal bacterial growth curve. - correct answer Lag, exponential,
stationary, death
An organism whose energy sources come from metabolizing the nutrients from other
organisms is called a - correct answer Heterotroph
A symbolic relationship where one organism benefits at the expense of another is
termed - correct answer Parasitism
What word is used to describe organisms which do not use oxygen in their cellular
respiration pathways. - correct answer Anaerobic
A solution which is ______ will cause a cell to swell with water. - correct answer
Hypotonic
Cellular growth can be visualized by an increase in: - correct answer cellular
components
Cell number
Cell size
Microbes that use photosynthesis to derive their energy are classified as _______ while
microbes that gain energy from oxidizing chemical compounds are classified as
_______. - correct answer Phototrophs, Chemotrophs
Which term is used exclusively to describe water's movement across a selective
membrane? - correct answer Osmosis
Which term is used to describe organisms that use the sun's light to directly power their
metabolic pathways? - correct answer Phototrophs
The term _______ describes two solutions having the same osmotic pressure such that,
when separated by a semipermeable membrane, there is no net movement of solvent in
either direction. - correct answer Isotonic
True or False: Zinc and Nickel are macronutrients? - correct answer False
, A cell in a ______ environment will lose water over time due to the high solute
concentration found outside the cell. - correct answer Hypertonic
What is not a good example of a chemoheterotroph? - correct answer Plants. Good
examples are humans.
Which term describes organisms which aquire their nutrition from other organisms or
their waste products? - correct answer Chemotrophs
Regarding oxygen, identify how microbes deal with its toxic properties. - correct answer
Must have a relationship with organism that can protect them from oxygen's toxic
effects.
Must contain detoxyfying enzymes.
Live in environments lacking oxygen.
______ phase is when a bacterial cell is placed into a new environment and cell division
is slow. - correct answer Lag
Describe how biofilms work to be resistant to many antibiotics. - correct answer Can
produce a protective compounds to stop antibiotic activity and thereby protect the entire
biofilm.
Peripheral microbes die and protect more internal microbes from harm.
_______ is a type of symbiotic relationship between 2 organisms in which 1 species
derives benefit without harming the other. - correct answer Commensalism
An autotroph organism that utilizes light for energy and carbon dioxide primarily as a
carbon source is termed a ________. - correct answer Photoautotroph
Biota of humans are capable of making _____ for the human body. - correct answer
Vitamins
From which body site could a facultative aerobic bacterial pathogen be isolated? -
correct answer Deep wound, intestine, surface of skin.
To obligate anaerobes, oxygen is: - correct answer Toxic, not used.
The movement of small, nonpolar molecules along a concentration gradient by
spontaneous random motion to achieve a uniform distribution is termed ______
diffusion. - correct answer Simple
Identify any condition which would be optimal for most human anaerobic pathogens -
correct answer Low to no oxygen present.
Approximately 35 C.
Near Ph 7
ANSWERS #22
What word is used to describe an organism and their cellular respiration pathways? -
correct answer Aerobic
A ________ microbe requires only inorganic nutrients and carbon dioxide as a sole
carbon source. - correct answer Autotrophic
Identify all of the general macronutrients found in a cell. - correct answer CHONPS
Phases in order for a normal bacterial growth curve. - correct answer Lag, exponential,
stationary, death
An organism whose energy sources come from metabolizing the nutrients from other
organisms is called a - correct answer Heterotroph
A symbolic relationship where one organism benefits at the expense of another is
termed - correct answer Parasitism
What word is used to describe organisms which do not use oxygen in their cellular
respiration pathways. - correct answer Anaerobic
A solution which is ______ will cause a cell to swell with water. - correct answer
Hypotonic
Cellular growth can be visualized by an increase in: - correct answer cellular
components
Cell number
Cell size
Microbes that use photosynthesis to derive their energy are classified as _______ while
microbes that gain energy from oxidizing chemical compounds are classified as
_______. - correct answer Phototrophs, Chemotrophs
Which term is used exclusively to describe water's movement across a selective
membrane? - correct answer Osmosis
Which term is used to describe organisms that use the sun's light to directly power their
metabolic pathways? - correct answer Phototrophs
The term _______ describes two solutions having the same osmotic pressure such that,
when separated by a semipermeable membrane, there is no net movement of solvent in
either direction. - correct answer Isotonic
True or False: Zinc and Nickel are macronutrients? - correct answer False
, A cell in a ______ environment will lose water over time due to the high solute
concentration found outside the cell. - correct answer Hypertonic
What is not a good example of a chemoheterotroph? - correct answer Plants. Good
examples are humans.
Which term describes organisms which aquire their nutrition from other organisms or
their waste products? - correct answer Chemotrophs
Regarding oxygen, identify how microbes deal with its toxic properties. - correct answer
Must have a relationship with organism that can protect them from oxygen's toxic
effects.
Must contain detoxyfying enzymes.
Live in environments lacking oxygen.
______ phase is when a bacterial cell is placed into a new environment and cell division
is slow. - correct answer Lag
Describe how biofilms work to be resistant to many antibiotics. - correct answer Can
produce a protective compounds to stop antibiotic activity and thereby protect the entire
biofilm.
Peripheral microbes die and protect more internal microbes from harm.
_______ is a type of symbiotic relationship between 2 organisms in which 1 species
derives benefit without harming the other. - correct answer Commensalism
An autotroph organism that utilizes light for energy and carbon dioxide primarily as a
carbon source is termed a ________. - correct answer Photoautotroph
Biota of humans are capable of making _____ for the human body. - correct answer
Vitamins
From which body site could a facultative aerobic bacterial pathogen be isolated? -
correct answer Deep wound, intestine, surface of skin.
To obligate anaerobes, oxygen is: - correct answer Toxic, not used.
The movement of small, nonpolar molecules along a concentration gradient by
spontaneous random motion to achieve a uniform distribution is termed ______
diffusion. - correct answer Simple
Identify any condition which would be optimal for most human anaerobic pathogens -
correct answer Low to no oxygen present.
Approximately 35 C.
Near Ph 7
