BIOL 2051 - MICRO - LUZAN EXAM 1 QUESTIONS &
ANSWERS SOLVED 100% CORRECT.
The use of Gram stain microbiology is important because they differentiate
__________ Answer - bacterial cells with different cell walls
The cytoplasmic membrane could be best described as __________ Answer - a
highly selective permeability barrier
Differential selection and descent with modification occurs during a process
called ________ Answer - evolution
If delta G is negative, the reaction is ________ Answer - exergonic
The rigid layer that is present in the cell walls of Bacteria that is primarily
responsible for the strength of the wall is known as __________ Answer -
peptidoglycan
T/F: Microbial sterilization is used to kill all microbes in or on objects Answer -
True
Which of the following would be used by a chemoorganotroph? Answer -
C2H3O2-
, T/F: Activation energy is the energy required for a chemeical reaction to begin.
Answer - True
When does endospore formation commence? Answer - when bacterial growth
ceases due to limitation of an essential nutrient
Cells move polar molecules across the cell membrane against a concentration
gradient using Answer - Energy and transport proteins
The change in free energy for a particular reaction is the most useful in
determining ________ Answer - Whether there will be a requirement or
production of energy
Based on the functional roles of phosphate in various microbial metabolisms,
which of the following compounds most likely contain phosphate? Answer -
Both inorganic and organic
Which of the following is false? Answer - Most available nitrogen is in organic
forms.
T/F: A pure culture contains a population of identical cells Answer - True
You have discovered a new coccoid-shaped microorganism with no nucleus, a
rigid cell wall, and a diameter of 2 micrometers. Chemical tests reveal that its
cell wall does NOT contain peptidoglycan. The new microorganism is
___________ Answer - most likely an archaeon
Electron microscopy has greater _________ than light microscopy, because the
wavelength of visible light is much larger than the wavelength of electrons.
Answer - resolution
ANSWERS SOLVED 100% CORRECT.
The use of Gram stain microbiology is important because they differentiate
__________ Answer - bacterial cells with different cell walls
The cytoplasmic membrane could be best described as __________ Answer - a
highly selective permeability barrier
Differential selection and descent with modification occurs during a process
called ________ Answer - evolution
If delta G is negative, the reaction is ________ Answer - exergonic
The rigid layer that is present in the cell walls of Bacteria that is primarily
responsible for the strength of the wall is known as __________ Answer -
peptidoglycan
T/F: Microbial sterilization is used to kill all microbes in or on objects Answer -
True
Which of the following would be used by a chemoorganotroph? Answer -
C2H3O2-
, T/F: Activation energy is the energy required for a chemeical reaction to begin.
Answer - True
When does endospore formation commence? Answer - when bacterial growth
ceases due to limitation of an essential nutrient
Cells move polar molecules across the cell membrane against a concentration
gradient using Answer - Energy and transport proteins
The change in free energy for a particular reaction is the most useful in
determining ________ Answer - Whether there will be a requirement or
production of energy
Based on the functional roles of phosphate in various microbial metabolisms,
which of the following compounds most likely contain phosphate? Answer -
Both inorganic and organic
Which of the following is false? Answer - Most available nitrogen is in organic
forms.
T/F: A pure culture contains a population of identical cells Answer - True
You have discovered a new coccoid-shaped microorganism with no nucleus, a
rigid cell wall, and a diameter of 2 micrometers. Chemical tests reveal that its
cell wall does NOT contain peptidoglycan. The new microorganism is
___________ Answer - most likely an archaeon
Electron microscopy has greater _________ than light microscopy, because the
wavelength of visible light is much larger than the wavelength of electrons.
Answer - resolution
