UTA NURS 5338 EXAM ACTUAL EXAM 2026 | MICROBIOLOGY
FINAL EXAM PORTAGE LEARNING | URGENT EMERGENCIES |
QUESTIONS AND CORRECT ANSWERS | UNIVERSITY OF TEXAS
AT ARLINGTON
Cell walls are found in which of the following (select all that apply):
A. Plants
B. Fungi
C. Bacteria
D. Mammalian cells
E. Algae ---------CORRECT ANSWER-----------------A, B, C, E
What are the byproducts of light reactions used for in dark reactions? --
-------CORRECT ANSWER-----------------The ATP and NADPH produced via
light reactions are used in dark reactions to convert carbon dioxide and
water into organic carbon compounds as well as useful carbohydrates
(a process called carbon fixation).
True or False: Metabolism is a controlled set of biochemical reactions
that occur in living organisms in order to maintain life ---------CORRECT
ANSWER-----------------True
,Why does the alpha toxin (perfringolysin) produced during an infection
of gas gangrene cause cell death? ---------CORRECT ANSWER----------------
-The toxin perforates the membrane. It forms pores in the plasma
membrane of host cells
resulting in uncontrolled ion fluxes and eventually cell lysis and death
Complete the following chemical reaction by placing the appropriate
number in the blanks:__CO2 + __ATP + __NADPH + __H20 →C6H12O6
+ __ADP + __NADP+ ---------CORRECT ANSWER-----------------6, 18, 12,
12, 18, 12
True or False: Enzymes are polysaccharides that catalyze chemical
reactions ---------CORRECT ANSWER-----------------False.
Enzymes are proteins that catalyze chemical reactions.
The ______ surrounds the capsid of some viruses. ---------CORRECT
ANSWER-----------------envelope
,Identify the enzyme associated with the following enzymatic
reactions:A-B → B-A Ab + C → A + Cb ---------CORRECT ANSWER-----------
------Isomerases
Transferases
What determines the specificity of an enzyme? ---------CORRECT
ANSWER-----------------The specificity of an enzyme is heavily influenced
by its active site—a unique chemical structure bound only by select
target molecules. The structure is influenced by the amino acid
composition of the protein as this in turn influences the fold, shape and
'appearance' of the enzyme. The active site (and it's target protein) can
be thought of as a lock-and-key relationship. The active site provides a
specificity (like a lock) that only specific target proteins can bind—much
like how only a specific key will fit into, unlock and 'activate' a lock.
True or False: As movement requires energy, metabolism can be
defined as a controlled set of biochemical reactions that occur in only
motile organisms in order to maintain life. ---------CORRECT ANSWER-----
------------False, Metabolism occurs in all living organisms, not just those
that move.
What are usually metal ions known to assists enzyme during the
catalysis reaction? ---------CORRECT ANSWER-----------------Cofactors are
usually metal ions and assist enzyme during the catalysis reaction.
, Describe the energy transfer process relative to both ATP and ADP. -----
----CORRECT ANSWER-----------------ATP has the energy (phosphate
group) to donate while ADP can accept energy in the form of a
phosphate group. Thus, ATP can be reduced (ATP ⟶⟶ADP + Pi) while
ADP can be built into ATP (ADP + Pi ⟶⟶ATP).
Define anabolism ---------CORRECT ANSWER-----------------Anabolism is
the process of building up or biosynthesis
of macromolecules from small molecular units into much larger
complexes
True or False. You would expect to see a viral envelope on a virus
infecting a plant cell ---------CORRECT ANSWER-----------------False. The
overwhelming majority of animal viruses are enveloped whereas the
majority of plant or bacteria-infecting viruses are not.
From what source do chemotrophs acquire energy? ---------CORRECT
ANSWER-----------------Chemotrophs acquire energy from preformed
chemicals found in the environment.
FINAL EXAM PORTAGE LEARNING | URGENT EMERGENCIES |
QUESTIONS AND CORRECT ANSWERS | UNIVERSITY OF TEXAS
AT ARLINGTON
Cell walls are found in which of the following (select all that apply):
A. Plants
B. Fungi
C. Bacteria
D. Mammalian cells
E. Algae ---------CORRECT ANSWER-----------------A, B, C, E
What are the byproducts of light reactions used for in dark reactions? --
-------CORRECT ANSWER-----------------The ATP and NADPH produced via
light reactions are used in dark reactions to convert carbon dioxide and
water into organic carbon compounds as well as useful carbohydrates
(a process called carbon fixation).
True or False: Metabolism is a controlled set of biochemical reactions
that occur in living organisms in order to maintain life ---------CORRECT
ANSWER-----------------True
,Why does the alpha toxin (perfringolysin) produced during an infection
of gas gangrene cause cell death? ---------CORRECT ANSWER----------------
-The toxin perforates the membrane. It forms pores in the plasma
membrane of host cells
resulting in uncontrolled ion fluxes and eventually cell lysis and death
Complete the following chemical reaction by placing the appropriate
number in the blanks:__CO2 + __ATP + __NADPH + __H20 →C6H12O6
+ __ADP + __NADP+ ---------CORRECT ANSWER-----------------6, 18, 12,
12, 18, 12
True or False: Enzymes are polysaccharides that catalyze chemical
reactions ---------CORRECT ANSWER-----------------False.
Enzymes are proteins that catalyze chemical reactions.
The ______ surrounds the capsid of some viruses. ---------CORRECT
ANSWER-----------------envelope
,Identify the enzyme associated with the following enzymatic
reactions:A-B → B-A Ab + C → A + Cb ---------CORRECT ANSWER-----------
------Isomerases
Transferases
What determines the specificity of an enzyme? ---------CORRECT
ANSWER-----------------The specificity of an enzyme is heavily influenced
by its active site—a unique chemical structure bound only by select
target molecules. The structure is influenced by the amino acid
composition of the protein as this in turn influences the fold, shape and
'appearance' of the enzyme. The active site (and it's target protein) can
be thought of as a lock-and-key relationship. The active site provides a
specificity (like a lock) that only specific target proteins can bind—much
like how only a specific key will fit into, unlock and 'activate' a lock.
True or False: As movement requires energy, metabolism can be
defined as a controlled set of biochemical reactions that occur in only
motile organisms in order to maintain life. ---------CORRECT ANSWER-----
------------False, Metabolism occurs in all living organisms, not just those
that move.
What are usually metal ions known to assists enzyme during the
catalysis reaction? ---------CORRECT ANSWER-----------------Cofactors are
usually metal ions and assist enzyme during the catalysis reaction.
, Describe the energy transfer process relative to both ATP and ADP. -----
----CORRECT ANSWER-----------------ATP has the energy (phosphate
group) to donate while ADP can accept energy in the form of a
phosphate group. Thus, ATP can be reduced (ATP ⟶⟶ADP + Pi) while
ADP can be built into ATP (ADP + Pi ⟶⟶ATP).
Define anabolism ---------CORRECT ANSWER-----------------Anabolism is
the process of building up or biosynthesis
of macromolecules from small molecular units into much larger
complexes
True or False. You would expect to see a viral envelope on a virus
infecting a plant cell ---------CORRECT ANSWER-----------------False. The
overwhelming majority of animal viruses are enveloped whereas the
majority of plant or bacteria-infecting viruses are not.
From what source do chemotrophs acquire energy? ---------CORRECT
ANSWER-----------------Chemotrophs acquire energy from preformed
chemicals found in the environment.
