MBIO 3401 EXAM 1 ZHANG
EXAM 2025 LATEST NEWEST
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what type pf microscopy exploits differnces in refactive indices between cell parts and
surroundign media as well as all live cells
phase-contrst microscopy
scanning electron microscopy
,specimen is fixed and embedded, it cannot be used to view live specimen, provdes 3D image
of the specimen
atomic force microscope
measures van der Waals forces, example of scanning probe microscop e
what is the best method to examining the presensce of a chemical structure with a diameter of
3nm?
x-ray crystallography
what is the structure of prokaryotes that performs the same function as mitochodria in
eukaryotes
cell membrane
lipids
have ester linkages, while those of archaea have ether linkages
component of peptidoglycan
n-acetylmuramic acid, n-acetylglucosamine, amino acids, peptide cross-links
prokaryotic outer membrane
found in gram negative bacteria, contains porins, contains toxic component, contains
lipopolysaccharide layer
prokaryotic chromosome
has a single origin of replication and then DNA is replicated bidirectionally
what does a stalked cell in caulobacter crescentus divide to reproduce
a stalked cell and a flagellated cell
what is an extension of the cytoplasm that attaches bacteria to a surface called
stalk
prokaryotic flagella
driven by proton motice force, found in both gram - and gram +, embedded in the cell
envelope, used for chemotaxis
limitations for koch's postulates
not all microbes can be grown in pure culture, sometimes the causing agent can be found in
both healthy and sick individuals, not all those infected develop disease, not all pathogens
have animal modes of infection
causality of koch's postulates
, mycobacterium tuberculosis> tuberculosis, bacillus antracis>anthrax
association of koch's postulates
men wear larger shoes and are stronger than women. do large shoes make you stronger?
how does pasteur disprove spontaneous generation?
the curve of the neck prevented microbes from entering the broth. if the flask was broken, the
broth would be contaminated. boiled broth to get rid of exsiting microbes
why can microbes still grow after boiling?
boiling will not kill endospores, steam sterilization and autoclaving will completely sterilize
the broth
what happens if crystal violet is not added?
the iodine will not react with anything and will be able to leave lipid bilayer after adding
decolorizer. once the counter stain is added, both gram postive and negative will be red
what happens if iodine is not added during gram stain?
crystal violet will not react with anything and the decolorizer will be able to remove the CV.
both gram postive and negative will be red after safrinin
what happens if decolorizer is not added during gram stain
the negative bacteria will retain the color of the CV, and both types of bacteria will be purple
what happens if the counter stain is not added when gram staining
the gram negative will be colorless after being decoloized. gram negative will retain purple
color
what type of energy do photolithoautotrophs require
sunlight through photosynthesis
what type of energy do chemolithotrophs require
inorganic molecule
microbes include members of which of the following groups?
bacteria, archaea, fungi, viruses
which of the following scientist-contribution pairs is not matched correctly?
louis pasteur proved spontaneous generation
what is robert kochs contribution
developed the criteria for establishing a causative link betwen an infectious agent and disease
what is leewunhoek's contribution
EXAM 2025 LATEST NEWEST
UPDATE WITH ACTUAL
QUESTIONS AND DETAILED
VERIFIED ANSWERS WITH
RATIONALES (100%
CORRECT) //BRAND NEW!!
/ALREADY GRADED A+ WITH
GUARANTEED SUCCESS AFTER
DOWNLOAD (ALL YOU NEED TO
PASS YOUR EXAMS
what type pf microscopy exploits differnces in refactive indices between cell parts and
surroundign media as well as all live cells
phase-contrst microscopy
scanning electron microscopy
,specimen is fixed and embedded, it cannot be used to view live specimen, provdes 3D image
of the specimen
atomic force microscope
measures van der Waals forces, example of scanning probe microscop e
what is the best method to examining the presensce of a chemical structure with a diameter of
3nm?
x-ray crystallography
what is the structure of prokaryotes that performs the same function as mitochodria in
eukaryotes
cell membrane
lipids
have ester linkages, while those of archaea have ether linkages
component of peptidoglycan
n-acetylmuramic acid, n-acetylglucosamine, amino acids, peptide cross-links
prokaryotic outer membrane
found in gram negative bacteria, contains porins, contains toxic component, contains
lipopolysaccharide layer
prokaryotic chromosome
has a single origin of replication and then DNA is replicated bidirectionally
what does a stalked cell in caulobacter crescentus divide to reproduce
a stalked cell and a flagellated cell
what is an extension of the cytoplasm that attaches bacteria to a surface called
stalk
prokaryotic flagella
driven by proton motice force, found in both gram - and gram +, embedded in the cell
envelope, used for chemotaxis
limitations for koch's postulates
not all microbes can be grown in pure culture, sometimes the causing agent can be found in
both healthy and sick individuals, not all those infected develop disease, not all pathogens
have animal modes of infection
causality of koch's postulates
, mycobacterium tuberculosis> tuberculosis, bacillus antracis>anthrax
association of koch's postulates
men wear larger shoes and are stronger than women. do large shoes make you stronger?
how does pasteur disprove spontaneous generation?
the curve of the neck prevented microbes from entering the broth. if the flask was broken, the
broth would be contaminated. boiled broth to get rid of exsiting microbes
why can microbes still grow after boiling?
boiling will not kill endospores, steam sterilization and autoclaving will completely sterilize
the broth
what happens if crystal violet is not added?
the iodine will not react with anything and will be able to leave lipid bilayer after adding
decolorizer. once the counter stain is added, both gram postive and negative will be red
what happens if iodine is not added during gram stain?
crystal violet will not react with anything and the decolorizer will be able to remove the CV.
both gram postive and negative will be red after safrinin
what happens if decolorizer is not added during gram stain
the negative bacteria will retain the color of the CV, and both types of bacteria will be purple
what happens if the counter stain is not added when gram staining
the gram negative will be colorless after being decoloized. gram negative will retain purple
color
what type of energy do photolithoautotrophs require
sunlight through photosynthesis
what type of energy do chemolithotrophs require
inorganic molecule
microbes include members of which of the following groups?
bacteria, archaea, fungi, viruses
which of the following scientist-contribution pairs is not matched correctly?
louis pasteur proved spontaneous generation
what is robert kochs contribution
developed the criteria for establishing a causative link betwen an infectious agent and disease
what is leewunhoek's contribution
