UNE Microbiology Final Exam Questions And Answers Rated A+ New Update Assured Satisfaction
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UNE Microbiology
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UNE Microbiology
UNE Microbiology Final Exam Questions And Answers
Rated A+ New Update Assured Satisfaction
Nitrogen is a growth Limiting nutrient for many organisms because - -only a few
microbes can extract it from the atmosphere, but all organisms require if for amino acid
and nucleotide synthesis
An organi...
UNE Microbiology Final Exam Questions And Answers
Rated A+ New Update Assured Satisfaction
Nitrogen is a growth Limiting nutrient for many organisms because - -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 - -Salt concentrations
What tests are used to help identify bacteria today? - -All of the above
all of the following are used to protect organisms from the toxic by products of oxygen
EXCEPT - -protease
A metabolic pathway - -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? - -Small hydrophobic Molecules
The molecule that an enzyme acts upon is know as its - -substrate
any process hat releases energy is referred to as _ process - -exergonic
__ are complex communities of various types of microbes that adhere to surfaces - -
biofilm
In 854, John Snow determined that contaminated water transmits - -Cholera
Koch's postulates provided guidelines for - -relating certain microorganisms with
certain diseases
The place on the enzyme where the enzyme interacts with the substrate is called the -
-active site
Lipid A is also known as - -endotoxin
At temperatures higher than the maximum growth temperature for an organism - -
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 - -facultative
anerobe
During which growth phase are bacteria more susceptible to antimicrobial drugs - -
Log phase
Anabolic reactions may be characterized as - -forming large molecules from smaller
molecules
, UNE Microbiology Final Exam Questions And Answers
Rated A+ New Update Assured Satisfaction
heat is used in the destruction of bacteria because heat - -denatures enzymes by
altering their tertiary structure
which of the following prokaryotic cells contain an outer membrane - -gram-negative
bacteria
The study of the occurrence, distribution, and spread of disease is known as - -
epidemiology
which of the following was NOT an aspect of Pasteur's experiments to disprove
spontaneous generation - -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 - -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 - -Obligate aerobic
which of the following statements concerning the characteristics of life is FALSE - -
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 - -Quorum Sensing
The study of the body's defenses against pathogens is called - -Immunology
Which of the following measurement techniques would be useful to quantify a species of
bacteria that is difficult to culture? - -Microscope counts
The Krebs cycle accounts for all of the following EXCEPT - -production of pyruvate
from glucose
The term barophile refers to which of the following growth requirements - -
hydrostatic pressure
which of the following is TRUE statement concerning the structure and function of enzymes
- -After an enzyme has catalyzed a reaction, it resumes its original shape and can
interact with a new substrate molecule
Anabolism - -Synthesis of cellular compounds, Photosynthetic reactions that
produce glucose
, UNE Microbiology Final Exam Questions And Answers
Rated A+ New Update Assured Satisfaction
Catabolism - -Digestion of cellular compounds, Cells fed glucose and yielding
energy by fermentation and respiration, involves the krebs cycle, starch used for cellular
energy, involves glycolysis
Anabolism and Catabolism both - -Total of biochemical processes in a cell , the
metabolism of chemoheterotrophs
T/F resolution fo the spontaneous generation debate occurred with Koch's use of swan-
necked flasks - -Falses
T/F Refrigeration temperatures are too cold for the growth of microorganisms - -False
T/F the bacterial chromosome is continuos loop of DNA suspended in the cytosol without a
nuclear membrane - -True
T/F Environmental changes can result in the inactivation of enzymes - -TRUE
T/F Fermentation pathways provide a cell with an alternative wat to regenerate NAD+ for
glycoloysis - -True
T/F Obligate anerobes have enzymes such as superoxide dismutase to protect them from
the damaging effects of oxygen - -False
T/F A selective medium can be formulated either by including inhibitory chemical
substances or by leaving out a single crucial nutrient - -True
T/F an obligate halophile will burst if placed in freshwater - -True
T/F Christian Gram devised a staining technique that divides all bacteria into 2 groups -
-Ture
T/F Glucose is used as an energy source only when proteins are fats are not available -
-False
Microbes that cause infectious disease are called - -pathogens
a _ is a mass of cells that are descended from a single cell through successive cell
divisions - -colony
enzymes increase the rate of reaction by lowering the _ energy - -activation
Lipid _ is a part of the Gram negative cell wall that can produce fever, inflammation, and
shock when it is released into the bloodstream - -A
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