Page 1 of 115
UTA MICROBIOLOGY EXAM 2 NEWEST 2025 ACTUAL
EXAM TEST BANK| COMPLETE 500 REAL EXAM
QUESTIONS AND CORRECT VERIFIED ANSWERS/
ALREADY GRADED A+| UTA MOCROBIOLOGY EXAM
2 REVIEW 2025 (BRAND NEW!!)
Uniporters .....ANSWER.....Transport in one direction across the
membrane
Symporters .....ANSWER.....Functions as co-transporters; the two
molecules travel in the same direction; 1. Energy is released as
one substituent moves down its concentration gradient 2. This
energy moves a second substrate against its gradient into the cell
Anitporters .....ANSWER.....Transport a molecule across the
membrane while simultaneously transporting another molecule in
the opposite direction; the actively transported molecule moves in
the direction opposite to the driving ion; 1. Antiporter binds
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substrate A on the cytoplasmic side of the membrane
2.Antiporter opens to the outside, where the concentration of A is
less 3. Substrate A leaves its binding site, and substrate B then
binds to its site 4. Antiporter opens to the inside of the cell.
Substrate B is released in exchange for substrate A
The Phosphotransferase System in E.coli .....ANSWER.....-Type of
group translocation
-Best studied system
-Moves glucose, fructose, and mannose
-Five proteins required
-Energy derived from phosphoenolpyruvate (PEP)
-The product Glucose 6-P is used in glycolysis
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Group Translocation .....ANSWER.....Substance transported is
chemically modified during transport across the membrane,
usually phosphorylated
ABC Systems .....ANSWER.....-ATP-Binding Cassette systems
- >200 different systems identified in prokaryotes
-Often involved in uptake of organic compounds (e.g. sugars,
amino acids), inorganic nutrients (e.g sulfate, phosphate), and
trace metals
-Typically display high substrate specificity
-Contain periplasmic binding proteins
3 components: Periplasmic binding proteins, Membrane- spanning
transporter, and ATP-hydrolyzing protein (i.e ATPase); also
requires ATP energy
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Shown in diagram at C
Cell Wall .....ANSWER.....How prokaryotes protect the cell
membrane? For most species, the cell envelope includes at least
one structural supporting layer and the most common structural
support is _______?
This confers shape and rigidity to the cell and helps it withstand
turgor pressure, can see it for example in E.coli
Mycoplasmas .....ANSWER.....An example of a few prokaryotes
who have a cell membrane with no outer layers
It's difficult to Gram stain
Sacculus .....ANSWER.....The bacterial cell wall, or this, consists of
a single- interlinked molecule; for example disaccharide or
peptidoglycan
UTA MICROBIOLOGY EXAM 2 NEWEST 2025 ACTUAL
EXAM TEST BANK| COMPLETE 500 REAL EXAM
QUESTIONS AND CORRECT VERIFIED ANSWERS/
ALREADY GRADED A+| UTA MOCROBIOLOGY EXAM
2 REVIEW 2025 (BRAND NEW!!)
Uniporters .....ANSWER.....Transport in one direction across the
membrane
Symporters .....ANSWER.....Functions as co-transporters; the two
molecules travel in the same direction; 1. Energy is released as
one substituent moves down its concentration gradient 2. This
energy moves a second substrate against its gradient into the cell
Anitporters .....ANSWER.....Transport a molecule across the
membrane while simultaneously transporting another molecule in
the opposite direction; the actively transported molecule moves in
the direction opposite to the driving ion; 1. Antiporter binds
,Page 2 of 115
substrate A on the cytoplasmic side of the membrane
2.Antiporter opens to the outside, where the concentration of A is
less 3. Substrate A leaves its binding site, and substrate B then
binds to its site 4. Antiporter opens to the inside of the cell.
Substrate B is released in exchange for substrate A
The Phosphotransferase System in E.coli .....ANSWER.....-Type of
group translocation
-Best studied system
-Moves glucose, fructose, and mannose
-Five proteins required
-Energy derived from phosphoenolpyruvate (PEP)
-The product Glucose 6-P is used in glycolysis
,Page 3 of 115
Group Translocation .....ANSWER.....Substance transported is
chemically modified during transport across the membrane,
usually phosphorylated
ABC Systems .....ANSWER.....-ATP-Binding Cassette systems
- >200 different systems identified in prokaryotes
-Often involved in uptake of organic compounds (e.g. sugars,
amino acids), inorganic nutrients (e.g sulfate, phosphate), and
trace metals
-Typically display high substrate specificity
-Contain periplasmic binding proteins
3 components: Periplasmic binding proteins, Membrane- spanning
transporter, and ATP-hydrolyzing protein (i.e ATPase); also
requires ATP energy
, Page 4 of 115
Shown in diagram at C
Cell Wall .....ANSWER.....How prokaryotes protect the cell
membrane? For most species, the cell envelope includes at least
one structural supporting layer and the most common structural
support is _______?
This confers shape and rigidity to the cell and helps it withstand
turgor pressure, can see it for example in E.coli
Mycoplasmas .....ANSWER.....An example of a few prokaryotes
who have a cell membrane with no outer layers
It's difficult to Gram stain
Sacculus .....ANSWER.....The bacterial cell wall, or this, consists of
a single- interlinked molecule; for example disaccharide or
peptidoglycan
