BIOL3200 EXAM 2 CONTENT EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS GRADED A++
LATEST UPDATE
what is happening to cells in the lag phase
prep work (flatline)
what is happening to cells in the log phase
exponential replication (increasing line)
what bacterial growth phase is ideal for microbiology labs
log phase
what is happening to cells in the stationary phase
they're just living (flatline)
what is happening to cells in the death phase
exponential decrease (decreasing line)
lag phase
what phase is #1
log phase
what phase is #2
stationary phase
what phase is #3
death phase
,what phase is #4
________ nutrients: those that must be supplied
essential
macronutrients are required in (small/large) quantities
large
what are the 3 most abundant macronutrients
C, H, O
C, H, O, N, P, S are all (micro/macro)nutrients
macro
micronutrients are required in (small/large) quantities
small
Co, Cu, Mn, Zn, Mo, Ni are trace elements that help with what
enzyme function
Co, Cu, Mn, Zn, Mo, Ni are trace elements that are related to
(micro/macro)nutrients
micro
true/false: all microbes are created equal
false
true/false: macronutrients and macromolecules are one in the same
false
what element is what all of earth's life forms are based on
carbon
how do heterotrophs acquire O2?
,ingests/absorbs it from another organic source
phototrophs are a type of (heterotroph/autotroph)
autotroph
lithotrophs are a type of (heterotroph/autotroph)
autotroph
(heterotrophs/autotrophs) release CO2
heterotrophs
(heterotrophs/autotrophs) make organic compounds by fixing CO2
autotrophs
__________ use light energy to make organic compounds
phototrophs
_________ get energy from the oxidation of minerals
lithotrophs
true/false: heterotrophs and autotrophs are 2 types of microbes
true
what does the carbon cycle "start" with
polysaccharides (carbs)
what step in the carbon cycle turns glucose into CO2 and H2O
glycolysis
is glycolysis in the carbon cycle a heterotrophic or autotrophic process
heterotrophic
do heterotrophs or autotrophs use NADPH and ATP to form glucose at the end of
the carbon cycle
, autotrophs
do heterotrophs or autotrophs make CO2 and H2O through glycolysis
heterotrophs
true/false: autotrophs go through glycolysis
false
what is the overall product of the carbon cycle
glucose
do heterotrophs or autotrophs have a longer process in the carbon cycle
heterotrophs
theoretically, what would happen if there was more heterotrophy than autotrophy
in the carbon cycle
there would be excess CO2 and H2O for a while, then they would run out of glucose
if there was more heterotrophy than autotrophy, what process would no longer
exist
carbon cycle
if there was more heterotrophy than autotrophy in the carbon cycle, what would
run out first: CO2, H2O, glucose
glucose
true/false: only prokaryotes can participate in the nitrogen cycle
true
denitrifiers, nitrogen fixers, and nitrifiers are all types of (prokaryotes/eukaryotes)
prokaryotes
ANSWERS WITH COMPLETE SOLUTIONS GRADED A++
LATEST UPDATE
what is happening to cells in the lag phase
prep work (flatline)
what is happening to cells in the log phase
exponential replication (increasing line)
what bacterial growth phase is ideal for microbiology labs
log phase
what is happening to cells in the stationary phase
they're just living (flatline)
what is happening to cells in the death phase
exponential decrease (decreasing line)
lag phase
what phase is #1
log phase
what phase is #2
stationary phase
what phase is #3
death phase
,what phase is #4
________ nutrients: those that must be supplied
essential
macronutrients are required in (small/large) quantities
large
what are the 3 most abundant macronutrients
C, H, O
C, H, O, N, P, S are all (micro/macro)nutrients
macro
micronutrients are required in (small/large) quantities
small
Co, Cu, Mn, Zn, Mo, Ni are trace elements that help with what
enzyme function
Co, Cu, Mn, Zn, Mo, Ni are trace elements that are related to
(micro/macro)nutrients
micro
true/false: all microbes are created equal
false
true/false: macronutrients and macromolecules are one in the same
false
what element is what all of earth's life forms are based on
carbon
how do heterotrophs acquire O2?
,ingests/absorbs it from another organic source
phototrophs are a type of (heterotroph/autotroph)
autotroph
lithotrophs are a type of (heterotroph/autotroph)
autotroph
(heterotrophs/autotrophs) release CO2
heterotrophs
(heterotrophs/autotrophs) make organic compounds by fixing CO2
autotrophs
__________ use light energy to make organic compounds
phototrophs
_________ get energy from the oxidation of minerals
lithotrophs
true/false: heterotrophs and autotrophs are 2 types of microbes
true
what does the carbon cycle "start" with
polysaccharides (carbs)
what step in the carbon cycle turns glucose into CO2 and H2O
glycolysis
is glycolysis in the carbon cycle a heterotrophic or autotrophic process
heterotrophic
do heterotrophs or autotrophs use NADPH and ATP to form glucose at the end of
the carbon cycle
, autotrophs
do heterotrophs or autotrophs make CO2 and H2O through glycolysis
heterotrophs
true/false: autotrophs go through glycolysis
false
what is the overall product of the carbon cycle
glucose
do heterotrophs or autotrophs have a longer process in the carbon cycle
heterotrophs
theoretically, what would happen if there was more heterotrophy than autotrophy
in the carbon cycle
there would be excess CO2 and H2O for a while, then they would run out of glucose
if there was more heterotrophy than autotrophy, what process would no longer
exist
carbon cycle
if there was more heterotrophy than autotrophy in the carbon cycle, what would
run out first: CO2, H2O, glucose
glucose
true/false: only prokaryotes can participate in the nitrogen cycle
true
denitrifiers, nitrogen fixers, and nitrifiers are all types of (prokaryotes/eukaryotes)
prokaryotes
