Une microbiology final exam with complete
solutions 100 verified latest update
,Nitrogen is a growth Limiting nutrient for many organisms because - ANSWER only a few microbes
can extract it from the atmosphere, but all organisms require if for amino acid and nucleotide synthesis
An organism that tolerates high _ is called a halophile - ANSWER Salt concentrations
What tests are used to help identify bacteria today? - ANSWER All of the above
all of the following are used to protect organisms from the toxic by products of oxygen EXCEPT -
ANSWER protease
A metabolic pathway - ANSWER All the above are true
which of the following molecules would be expected to cross the cytoplasmic membrane rapidly and
without the use of transport proteins? - ANSWER Small hydrophobic Molecules
The molecule that an enzyme acts upon is know as its - ANSWER substrate
any process hat releases energy is referred to as _ process - ANSWER exergonic
are complex communities of various types of microbes that adhere to surfaces
- ANSWER biofilm
In 854, John Snow determined that contaminated water transmits - ANSWER Cholera
Koch's postulates provided guidelines for - ANSWER relating certain microorganisms with certain
diseases
The place on the enzyme where the enzyme interacts with the substrate is called the - ANSWER active
site
Lipid A is also known as - ANSWER endotoxin
At temperatures higher than the maximum growth temperature for an organism - ANSWER hydrogen
bonds are broken, proteins are denatured, and membranes become too fluid
Microbes that can live in the presence or absence of oxygen are called - ANSWER facultative anerobe
, During which growth phase are bacteria more susceptible to antimicrobial drugs - ANSWER Log phase
Anabolic reactions may be characterized as - ANSWER forming large molecules from smaller
molecules
heat is used in the destruction of bacteria because heat - ANSWER denatures enzymes by altering their
tertiary structure
which of the following prokaryotic cells contain an outer membrane - ANSWER gram-negative
bacteria
The study of the occurrence, distribution, and spread of disease is known as - ANSWER epidemiology
which of the following was NOT an aspect of Pasteur's experiments to disprove spontaneous generation
- ANSWER The flasks he used were sealed with corks
Leeuwenhoek made lenses that allowed him to magnify objects more than 200x. however, he failed to
promote scientific inquiry because - ANSWER He didnt reveal how to grind the lenses and no one else
was doing it that well
An organism is one that requires oxygen for growth - ANSWER Obligate aerobic
which of the following statements concerning the characteristics of life is FALSE
- ANSWER Reproduction is defined as an increase in the size of an organism
involves the ability of bacterial cells to sense their numbers by producing and responding to
extracellular chemicals - ANSWER Quorum Sensing
The study of the body's defenses against pathogens is called - ANSWER Immunology
Which of the following measurement techniques would be useful to quantify a species of bacteria that
is difficult to culture? - ANSWER Microscope counts
The Krebs cycle accounts for all of the following EXCEPT - ANSWER production of pyruvate from
glucose
The term barophile refers to which of the following growth requirements - ANSWER hydrostatic
pressure
solutions 100 verified latest update
,Nitrogen is a growth Limiting nutrient for many organisms because - ANSWER only a few microbes
can extract it from the atmosphere, but all organisms require if for amino acid and nucleotide synthesis
An organism that tolerates high _ is called a halophile - ANSWER Salt concentrations
What tests are used to help identify bacteria today? - ANSWER All of the above
all of the following are used to protect organisms from the toxic by products of oxygen EXCEPT -
ANSWER protease
A metabolic pathway - ANSWER All the above are true
which of the following molecules would be expected to cross the cytoplasmic membrane rapidly and
without the use of transport proteins? - ANSWER Small hydrophobic Molecules
The molecule that an enzyme acts upon is know as its - ANSWER substrate
any process hat releases energy is referred to as _ process - ANSWER exergonic
are complex communities of various types of microbes that adhere to surfaces
- ANSWER biofilm
In 854, John Snow determined that contaminated water transmits - ANSWER Cholera
Koch's postulates provided guidelines for - ANSWER relating certain microorganisms with certain
diseases
The place on the enzyme where the enzyme interacts with the substrate is called the - ANSWER active
site
Lipid A is also known as - ANSWER endotoxin
At temperatures higher than the maximum growth temperature for an organism - ANSWER hydrogen
bonds are broken, proteins are denatured, and membranes become too fluid
Microbes that can live in the presence or absence of oxygen are called - ANSWER facultative anerobe
, During which growth phase are bacteria more susceptible to antimicrobial drugs - ANSWER Log phase
Anabolic reactions may be characterized as - ANSWER forming large molecules from smaller
molecules
heat is used in the destruction of bacteria because heat - ANSWER denatures enzymes by altering their
tertiary structure
which of the following prokaryotic cells contain an outer membrane - ANSWER gram-negative
bacteria
The study of the occurrence, distribution, and spread of disease is known as - ANSWER epidemiology
which of the following was NOT an aspect of Pasteur's experiments to disprove spontaneous generation
- ANSWER The flasks he used were sealed with corks
Leeuwenhoek made lenses that allowed him to magnify objects more than 200x. however, he failed to
promote scientific inquiry because - ANSWER He didnt reveal how to grind the lenses and no one else
was doing it that well
An organism is one that requires oxygen for growth - ANSWER Obligate aerobic
which of the following statements concerning the characteristics of life is FALSE
- ANSWER Reproduction is defined as an increase in the size of an organism
involves the ability of bacterial cells to sense their numbers by producing and responding to
extracellular chemicals - ANSWER Quorum Sensing
The study of the body's defenses against pathogens is called - ANSWER Immunology
Which of the following measurement techniques would be useful to quantify a species of bacteria that
is difficult to culture? - ANSWER Microscope counts
The Krebs cycle accounts for all of the following EXCEPT - ANSWER production of pyruvate from
glucose
The term barophile refers to which of the following growth requirements - ANSWER hydrostatic
pressure
