WGU BIOCHEMISTRY OA FINAL TEST
2026 QUESTIONS WITH CORRECT
ANSWERS GRADED A+
◍ True or False: According to the Module, a compound with a molecular mass
of 1,000 g/mol is considered a macromolecule..
Answer: False
◍ Prokaryote (Pro- Before, Kary- Nucleus).
Answer: No NucleusTightly Bound, Circular Chromosome (1)Asexual
◍ True or False: Biomolecules can have two or more different functional
groups..
Answer: True
◍ Virulence Factors (ability to cause disease).
Answer: bacteria-associated molecules that are required for a bacterium to
cause disease while infecting eukaryotic hosts such as humans
◍ Prokaryote.
Answer: -no membrane bound organelles (nucleus, mitochondria,
chloroplasts)-has cytoplasmic soup(soupy)-Only BACTERIA &
ARCHAEA
◍ Flagellum.
Answer: used for movement only (w/o bacterium won't move)
◍ Bacteria.
Answer: Run- Tumble (movement)
◍ True or False: The following functional group is an amine. C2H5NH2.
Answer: True
◍ True or False: In a eukaryotic cell, the organelles called peroxisomes serve
, the purpose of digesting macromolecules..
Answer: False
◍ pilus (pili).
Answer: hairlike, submicroscopic structure made of protein that can help a
bacterial cell attach to environmental surfaces and act as a bridge between
cells
◍ Plasmid.
Answer: exchange genetic information
◍ True or False: Carbon dioxide has a linear molecular shape AND has a bond
angle of 109.5o..
Answer: False
◍ Of the following, ____________ is not a property of carbon.Forming ionic
bondsForming cyclic structuresForming multiple bondsForming bonds with
oxygenBonding in long chains.
Answer: Forming ionic bonds
◍ Capule(thick)/ slime layer(thin).
Answer: protection to the bacterial cell (slimy, made up of
polysaccharides(sticky)1.helps bacteria stick producing biofilms2.protect
cell from phagocytosis (won't eat bacteria w/ capsule)
◍ _____________ is a functional group found in carbohydrates..
Answer: Alcohols
◍ The following functional group is an example of
_________.Ch3COCH2CH3.
Answer: Ketone
◍ A ___________ is a chemical formula that shows how the atoms of a
molecule are bonded to one another..
Answer: Kekule' structure
◍ A collection of two or more macromolecules uniting is called a _______..
Answer: Supramolecular Complex
,◍ An organic compound with this structure, C=C, contains a ________
functional group..
Answer: Alkene
◍ Cell wall.
Answer: A rigid structure(peptidoglycan) that surrounds the cell membrane
and provides support to the cell from bursting (hypertonic solution)
◍ Cell membrane (plasma membrane) (selectively permeable membrane).
Answer: Found in all cells. Protects the cell by controlling what gets
in(good) and out (waste).
◍ bacteria cell wall.
Answer: made of peptidoglycan, name after staining technique
◍ What element has been called the "super glue" of the chemical world?.
Answer: C
◍ What would be the approximate size of a human cell?12 μm1 nm15 nm0.2
inch15 cm.
Answer: 12 μm
◍ Cell Wall Type and the Gram Stain.
Answer: Gram positive, gram negative, acid fact
◍ Gram positive cell wall- Thick.
Answer: -Keep primary stain-cell wall-peptidoglycan (60-90%)- Thick &
Rigid-Teichoic acids- Embedded in peptio.(attachment sites for
bacteriophages (virus that infects bacteria)-Lipoteichoic acids-anchor the
cell membrane
◍ For pentane, there are________ carbon and ________hydrogen atoms..
Answer: 5, 12
◍ When writing an organic functional group, scientists often write an "R" as
part of the structure. What does the R indicate?.
Answer: Rest of the molecule
, ◍ Gram positive cell wall function.
Answer: Protects cell from lysisProtects cell from phagocytes (made of
sugar so phagocytes think cell is supposed to be there)Maintains cell
shapeConfer new abilities (take genetic info transfer to another bacteria
cellAntibiotic resistancetoxin productionUtilize new
carbohydrates-purple/blue stain
◍ According to the module, the study of carbon compounds is referred to as
_____..
Answer: Organic Chemistry
◍ The ___________ functional group was NOT discussed in this
module.AlcoholAmineAromaticThiolAll of these were discussed.
Answer: All of these were discussed
◍ gram negative cell wall (more pathogenic).
Answer: Lose primary stain &counterstain neededThin peptidoglycan
(10-20%)Outer membrane- extra layer of protection Periplasmic space
(metabolism and breaks down substances to go into cell
membrane)Lipopolysaccharide (endotoxin-toxic to humans, no effect when
attached to bacteria, harmful when released (treatment/immune try to fight
off infection)Toxic-causes fever, inflammation,
shock/deathExotoxin-bacteria produced and release-counterstain turn
pink/red
◍ Which number would be closest to the approximate number of ribosomes in
an
E. coli cell?938400150026,000.
Answer: 26,000
◍ Eukaryotes have molecules that provide a protective structure. This network,
which is found in all eukaryotes, is called the _____________..
Answer: Cytoskeleton
◍ Acid fast.
Answer: Mycobacterium (pathogenic &causes TB & hansens)Thin layer of
2026 QUESTIONS WITH CORRECT
ANSWERS GRADED A+
◍ True or False: According to the Module, a compound with a molecular mass
of 1,000 g/mol is considered a macromolecule..
Answer: False
◍ Prokaryote (Pro- Before, Kary- Nucleus).
Answer: No NucleusTightly Bound, Circular Chromosome (1)Asexual
◍ True or False: Biomolecules can have two or more different functional
groups..
Answer: True
◍ Virulence Factors (ability to cause disease).
Answer: bacteria-associated molecules that are required for a bacterium to
cause disease while infecting eukaryotic hosts such as humans
◍ Prokaryote.
Answer: -no membrane bound organelles (nucleus, mitochondria,
chloroplasts)-has cytoplasmic soup(soupy)-Only BACTERIA &
ARCHAEA
◍ Flagellum.
Answer: used for movement only (w/o bacterium won't move)
◍ Bacteria.
Answer: Run- Tumble (movement)
◍ True or False: The following functional group is an amine. C2H5NH2.
Answer: True
◍ True or False: In a eukaryotic cell, the organelles called peroxisomes serve
, the purpose of digesting macromolecules..
Answer: False
◍ pilus (pili).
Answer: hairlike, submicroscopic structure made of protein that can help a
bacterial cell attach to environmental surfaces and act as a bridge between
cells
◍ Plasmid.
Answer: exchange genetic information
◍ True or False: Carbon dioxide has a linear molecular shape AND has a bond
angle of 109.5o..
Answer: False
◍ Of the following, ____________ is not a property of carbon.Forming ionic
bondsForming cyclic structuresForming multiple bondsForming bonds with
oxygenBonding in long chains.
Answer: Forming ionic bonds
◍ Capule(thick)/ slime layer(thin).
Answer: protection to the bacterial cell (slimy, made up of
polysaccharides(sticky)1.helps bacteria stick producing biofilms2.protect
cell from phagocytosis (won't eat bacteria w/ capsule)
◍ _____________ is a functional group found in carbohydrates..
Answer: Alcohols
◍ The following functional group is an example of
_________.Ch3COCH2CH3.
Answer: Ketone
◍ A ___________ is a chemical formula that shows how the atoms of a
molecule are bonded to one another..
Answer: Kekule' structure
◍ A collection of two or more macromolecules uniting is called a _______..
Answer: Supramolecular Complex
,◍ An organic compound with this structure, C=C, contains a ________
functional group..
Answer: Alkene
◍ Cell wall.
Answer: A rigid structure(peptidoglycan) that surrounds the cell membrane
and provides support to the cell from bursting (hypertonic solution)
◍ Cell membrane (plasma membrane) (selectively permeable membrane).
Answer: Found in all cells. Protects the cell by controlling what gets
in(good) and out (waste).
◍ bacteria cell wall.
Answer: made of peptidoglycan, name after staining technique
◍ What element has been called the "super glue" of the chemical world?.
Answer: C
◍ What would be the approximate size of a human cell?12 μm1 nm15 nm0.2
inch15 cm.
Answer: 12 μm
◍ Cell Wall Type and the Gram Stain.
Answer: Gram positive, gram negative, acid fact
◍ Gram positive cell wall- Thick.
Answer: -Keep primary stain-cell wall-peptidoglycan (60-90%)- Thick &
Rigid-Teichoic acids- Embedded in peptio.(attachment sites for
bacteriophages (virus that infects bacteria)-Lipoteichoic acids-anchor the
cell membrane
◍ For pentane, there are________ carbon and ________hydrogen atoms..
Answer: 5, 12
◍ When writing an organic functional group, scientists often write an "R" as
part of the structure. What does the R indicate?.
Answer: Rest of the molecule
, ◍ Gram positive cell wall function.
Answer: Protects cell from lysisProtects cell from phagocytes (made of
sugar so phagocytes think cell is supposed to be there)Maintains cell
shapeConfer new abilities (take genetic info transfer to another bacteria
cellAntibiotic resistancetoxin productionUtilize new
carbohydrates-purple/blue stain
◍ According to the module, the study of carbon compounds is referred to as
_____..
Answer: Organic Chemistry
◍ The ___________ functional group was NOT discussed in this
module.AlcoholAmineAromaticThiolAll of these were discussed.
Answer: All of these were discussed
◍ gram negative cell wall (more pathogenic).
Answer: Lose primary stain &counterstain neededThin peptidoglycan
(10-20%)Outer membrane- extra layer of protection Periplasmic space
(metabolism and breaks down substances to go into cell
membrane)Lipopolysaccharide (endotoxin-toxic to humans, no effect when
attached to bacteria, harmful when released (treatment/immune try to fight
off infection)Toxic-causes fever, inflammation,
shock/deathExotoxin-bacteria produced and release-counterstain turn
pink/red
◍ Which number would be closest to the approximate number of ribosomes in
an
E. coli cell?938400150026,000.
Answer: 26,000
◍ Eukaryotes have molecules that provide a protective structure. This network,
which is found in all eukaryotes, is called the _____________..
Answer: Cytoskeleton
◍ Acid fast.
Answer: Mycobacterium (pathogenic &causes TB & hansens)Thin layer of
