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WorksheetsPhysiology Review
Total questions: 89
Worksheet time: 50mins
Obtain Carbon from organic matter
Heterotrophs
Autotrophs
Obtain carbon from inorganic C or CO2
Convert CO2 to organic compounds
Heterotrophs
Autotrophs
Microbes are classified based on their _______ source?
hydrogen
oxygen
Carbon
phosphorous
_____ is in variable states that can range from biologically useable to toxic in cell.
EX. inorganic: NO2/O2 organic: glucose
carbon
oxygen
hydrogen
nitrogen
Absence of gas O2 (oxygen)
anaerobic
aerobic
Presence of gas O2 (oxygen)
aerobic
anaerobic
Used in: PROTEINS, CH2O’s, LIPIDS & NUCLEIC ACIDS and important for
respiration
oxygen
carbon
nitrogen
hydrogen
is in variable states that must be converted for biological use Usually supplied via inorganic molecule
(ammonia), (nitrate), (nitrite),
oxygen
hydrogen
carbon
nitrogen
Used in: Protein (ALL AMINO ACIDS), DNA, RNA, ATP
sulfur
phosphorus
nitrogen
hydrogen
Used in: OXIDATION-REDUCTION REACTIONS, BUFFER OF pH, HYDROGEN BONDING
hydrogen
sulfur
phosphorous
nitrogen
What are the building blocks to create larger molecules for growth and replication.
(a)
Can use SUNLIGHT as energy source and CO2 as carbon
source via the process of PHOTOSYNTHESIS
photo-autotrophs
chemo-autotrophs
photo-heterotrophs
chemo-heterotrophs
Can use INORGANIC MOLECULES as energy source and
CO2 as carbon source via the process of METHANOGENESIS
photo-autotrophs
chemo-autotrophs
photo-heterotrophs
chemo-heterotrophs
Use LIGHT as energy source and ORGANIC COMPOUNDS
as carbon source via the modified process of
PHOTOSYNTHESIS
photo-autotrophs
chemo-autotrophs
photo-heterotrophs
chemo-heterotophs
use ORGANIC COMPOUNDS as energy + carbon source via
the process of RESPIRATION or FERMENTATION
photo-autotrophs
chemo-autotophs
photo-heterotrophs
chemo-heterotrophs
Most Bacteria use what type of energy sources
photo-autotrophs
chemo-autotrophs
photo-heterotrophs
chemo-heterotrophs
is the process of generating energy and substrates which are used in Anabolism.
catabolism
anabolism
metabolism
is the use of energy and substrates for subsequent biosynthetic pathways.
catabolism
metabolism
anabolism
the net sum of energy transfer between catabolism and anabolism. If enough energy is available for anabolic processes, the cell can grow and replicate.
metabolism
glycolysis
anabolism
catabolism
Energy is stored in high energy bonds between the phosphate groups with catabolism.
CO2
ADP
ATP
Energy is released with loss of a phosphate group and the energy is used in anabolism.
ATP
ADP
CO2
NADH
Loss of electrons
oxidation
reduction
Gain of electrons
oxidation
reduction
serves as a co-enzyme carrier molecule to shuttle electrons during metabolism.
ADP/ATP
NAD/NADH
Oxygen
Net output of Glycolysis
2ATP
4ATP
2NADH
2 Pyruvate
Recycle NADH
Less efficient to make energy, ~2ATP
absence of oxygen
Aerobic
anaerobic
Fermentation
TCA cycle
Converts pyruvate to lactate
aerobic
anaerobic
Fermentation
acts as a Terminal electron acceptor in the ETC of the
electrons from NADH and FADH, which generates ATP energy.
phosphorus
nitrogen
oxygen
hydrogen
Goal is oxidation of pyruvic acid • Efficient transfer of electrons from carbon
molecules to reduce coenzyme electron
carriers NADH and FADH
Glycolysis
Anabolism
TCA cycle/Krebs cycle
alternative inorganic electron acceptor
oxygen
nitrate
nitrite
hydrogen
Goal is oxidation of NADH in pathways that serve as electron
shuttle mechanism and occurs in _________ in
Prokaryotes
cell membrane
mitochondria
cytoplasm
nucleus
Which test is used to test for fermentation
Citrate
MAC Argar
methyl red test
Convert organic molecules and ATP to building blocks
Catabolism
Oxidative
Biosynthesis
Intermediate products of Krebs Cycle are converted to (a) for protein synthesis
Bacteria reproduce by
mitosis
meiosis
binary fission
Bacterial replication involves
anabolic processes for building blocks
DNA replication
Increase cell size
Bacterial growth is
exponential
linear
sigmoidal
stationary
Newly inoculated cells, adjust to new environment
Cells not multiplying at maximum rate
Population is sparse or dilute
death
stationary
log
Lag
Growth occurs at an exponential rate
Cells reach maximum rate of cell division
Continues as long as nutrients and environment are
favorable
lag
stationary
log
death
Population reaches maximum numbers
Rate of cell inhibition or death = Rate of multiplication
death
stationary
log
lag
Decline in growth rate
Caused by depletion of nutrients , O2
excretion of toxic waste products increased density of cells (limited space)
death
log
lag
stationary
substrate of glycolysis
-Think microbiology not biochem
glucose
pyruvate
ADP
NAD+
Which of the following are catabolic pathways
glycolysis
Krebs cycle/TCA
ETC
Biosynthesis
Identify the electron donor in the following Oxidation-Reduction reaction. NADH + O2 --> NAD+ + H2O
NADH
O2
NAD+
H2O
What is an example of a saccharide, found in the
bacterial cell?
capsule
peptidoglycan cell wall
flagella
cell membrane
DNA
What is an example of a amino acid, found in the
bacterial cell?
capsule
peptidoglycan cell wall
flagella
cell membrane
DNA
Which catabolic metabolism pathway of aerobic respiration takes place in the cell membrane of
bacteria and mitochondria in eukaryotes?
ETC
glycolysis
Kreb cycle
measures CELL DENSITY:
Record optical density (OD) or Absorbance (A) units
(a)
Bacteria can be quantified by
spectrophotometer
total cell count
live-count serial dilution
Based on Colony Forming Unit (CFU)
One bacteria lands on a media plate and replicates to a visible
“colony”, which can be counted
live count serial dilutions
total cell count
spectrophotometer
OD600 on y axis
Spectrophotometer
Viable Cell count
CFU/ml on y axis
Spectrophotometer
Viable Cell count
In order to deal with these toxic radicals, bacteria that
utilize O2
usually produce the following 2 enzymes
(a)
O2
necessary, use only aerobic respiration
Die in absence of O 2
Obligate aerobes
Obligate anaerobes
Facultative anaerobes
Aerotolerant
Microaerophiles
Cannot use O2
die when exposed to O2
Lack SOD and catalase!
Obligate aerobes
Obligate anaerobes
Microaerophiles
Aerotolerant
Facultative anaerobes
Can use both aerobic respiration (using O2) and
fermentation/anaerobic respiration (without O 2)
Obligate aerobes
Obligate anaerobes
Microaerophiles
Aerotolerant
Facultative anaerobes
Can grow in the presence or absence of O2
aerotolerant
microaerophiles
facultative anaerobes
obligate aerobes
Require lesser amounts of O2
Obligate aerobes
Obligate anaerobes
Microaerophiles
Aerotolerant
Facultative anaerobes
Some microbes can survive in extreme conditions aka
(a) such as high salt, temperature or low
Small range that promotes fastest growth & metabolism
rates
minimum
Maximum
optimum
Grow best at cold temperatures
Psychrotrophs
Mesophiles
Thermophiles
Grow best at human body temperatures
Psychrotrophs
Mesophiles
Thermophiles
Grow best at high temperatures
Psychrotrophs
Mesophiles
Thermophiles
Growth at low Ph
acidophile
alkaliphiles
neutrophiles
Growth at high Ph
acidophile
alkali-Giles
neutrophiles
doesn't kill bacteria cells just stops replication. Stops translation
bacteriostatic
bactericidal
The three domains of life was created by
Alexander Fleming
John Snow
Louis pasteur
Karl Woese
viewed microbes under microscope/ animalcules
Anton Van leeuwenhoek
John Snow
Robert koch
Edward Jenner
Cholera, water systems, epidemiology
Frances Redi
Edward Jenner
John snow
Joseph lister
mycology
fungi
bacteria
viruses
algae
sticks/attached to specimen - basic
positively charged stain
negatively charged stain
settles around specimen to form silhouette - acidic
positively charged stain
negatively charged stain
o-antigen
flagella
capsule
LPS
K- antigen
LPS
Capsule
Flagella
H-antigen
flagella
capsule
LPS
Gram Positive is associated with
Teichoic acid
pentaglycine bridge
LPS
lipoteichoic acid
outer membrane
Gram Negative is associated with
Teichoic acid
pentaglycine bridge
LPS
Porin Protein
outer membrane
Both Gram Positive and Gram Negative Have
Peptide bond
integral proteins
NAG/NAM
LPS
tetra peptide linkage
No Flagella
Atrichous
polar
lophotrichous
amphitrichous
Peritrichous
flagella - single at 1 of both ends
Atrichous
polar
lophotrichous
amphitrichous
Peritrichous
flagella - all around cell
Atrichous
polar
lophotrichous
amphitrichous
Peritrichous
flagella - bunch at 1 end
Atrichous
polar
lophotrichous
amphitrichous
Peritrichous
The vector for Trypanosoma
-sleeping disease
kissing bug
sandflies
mosquitos
Cat poop
The vector for Leishmania
-skin/ internal lesions
kissing bug
sandflies
mosquitos
Cat poop
Which protist causes abortion
trichomona
Giardia
toxoplasma
plasmodium
Roundworms
nematodes
cestodes
trematodes
Flukes: leaf shaped
nematodes
cestodes
trematodes
Viruses more sensitive to disinfectants
enveloped
naked
Enveloped viruses can do which type of viral release?
cell lysis
budding
exocytosis
