BIOD 171 PORTAGE LEARNING FINAL EXAM
QUESTIONS AND ANSWERS 2025/2026
TEST BANK
The function of the mitochondria is - correct answer>>To produce energy (ATP)
The function of the ribosome is - correct answer>>Protein synthesis
The gliding motility of a living cyanobacteria - correct answer>>Phase
contrast The HIV surface glycoprotein gp41 binds what host cellular
receptor? - correct answer>>CXCR4
HIV gp41 binds to the receptor CXCR4
The number of phases (3 vs. 4) and/or the number of times a loop passes
through a previous phase (once vs. multiple times) is acceptable provided
what happens? - correct answer>>Either deviation is acceptable in practice
provided the resulting gradient contains within it the growth of individual
colonies—if not, the experiment must be repeated.
The plasma membrane - correct answer>>Restricts movement of materials in
and out of the cell & Prevents essential nutrients from escaping The process of
carbon fixation begins with which of the following reactants: select all that apply.
- correct answer>>CO2, H2O, ATP, NADPH
There are how many known forms of amino acids - correct
answer>>twenty This phosphorylation process occurs in the mitochondria
of chemotropic eukaryotes. - correct answer>>Oxidative phosphorylation
This type of microscope enhances contrast between specimen and
,background but does not permit the visualization of intracellular
structures. - correct answer>>Dark Field
This type of microscope is best suited for visualizing GFP, RFP, and
YFP proteins. - correct answer>>Fluorescence
This type of microscope is capable of capturing images in multiple
focal planes, rendering a specimen in 3-D. - correct
answer>>Confocal This type of microscope uses a specialized
condenser and objective to amplify the slight differences between
cells and background. - correct answer>>Phase-Contrast
To be considered a pure culture, the sample (1) can be traced back to a
single cell and (2)__________ ? - correct answer>>The culture must also be
free from external contaminants. Simply put, a pure sample would never
contain multiple bacterial species (ie) Strep and Staph.
True of False: The genetic material within a prokaryotic cell is
contained within a membrane-enclosed region. - correct
answer>>False Only eukaryotic cells contain its genetic material
within a nucleus. True or False: A cell that is adherent, flat (thin),
and unstained is easily identified using bright field microscopy. -
correct answer>>False
True or False: Archaea is noted for its ability to survive under harsh
conditions.
Correct! - correct answer>>True
, Archaea can often be found in harsh conditions such as high salt
levels, high acid conditions, high temperatures and even oxygen-
poor conditions.
True or False: Chloroplasts are specific to algae and plants. - correct
answer>>True
True or False: Chocolate agar gets its brown color from cocoa to
produce an enriched media. - correct answer>>False
Chocolate (cocoa) is never added to the media. The name is derived
simply based on the color that actually comes from the presence of
'cooked' (lysed) red blood cells in the media.
True or False: During fermentation one means of eliminating
pyruvate is by converting it into lactic acid. - correct answer>>True
Pyruvate can be converted into either lactic acid or ethanol and
then eliminated from the cell.
True or False: Enzymes slow down chemical reactions to conserve
energy. - correct answer>>False
True or False: Following the decolorization step of the Gram stain,
GramNegative bacteria will appear colorless. - correct answer>>True, Even
together, the LPS and thin peptidoglycan layer are unable to retain the
crystal violet dye during decolorization.
True or False: Growth media is best suited for distinguishing
between two similar species of bacteria. - correct answer>>False
QUESTIONS AND ANSWERS 2025/2026
TEST BANK
The function of the mitochondria is - correct answer>>To produce energy (ATP)
The function of the ribosome is - correct answer>>Protein synthesis
The gliding motility of a living cyanobacteria - correct answer>>Phase
contrast The HIV surface glycoprotein gp41 binds what host cellular
receptor? - correct answer>>CXCR4
HIV gp41 binds to the receptor CXCR4
The number of phases (3 vs. 4) and/or the number of times a loop passes
through a previous phase (once vs. multiple times) is acceptable provided
what happens? - correct answer>>Either deviation is acceptable in practice
provided the resulting gradient contains within it the growth of individual
colonies—if not, the experiment must be repeated.
The plasma membrane - correct answer>>Restricts movement of materials in
and out of the cell & Prevents essential nutrients from escaping The process of
carbon fixation begins with which of the following reactants: select all that apply.
- correct answer>>CO2, H2O, ATP, NADPH
There are how many known forms of amino acids - correct
answer>>twenty This phosphorylation process occurs in the mitochondria
of chemotropic eukaryotes. - correct answer>>Oxidative phosphorylation
This type of microscope enhances contrast between specimen and
,background but does not permit the visualization of intracellular
structures. - correct answer>>Dark Field
This type of microscope is best suited for visualizing GFP, RFP, and
YFP proteins. - correct answer>>Fluorescence
This type of microscope is capable of capturing images in multiple
focal planes, rendering a specimen in 3-D. - correct
answer>>Confocal This type of microscope uses a specialized
condenser and objective to amplify the slight differences between
cells and background. - correct answer>>Phase-Contrast
To be considered a pure culture, the sample (1) can be traced back to a
single cell and (2)__________ ? - correct answer>>The culture must also be
free from external contaminants. Simply put, a pure sample would never
contain multiple bacterial species (ie) Strep and Staph.
True of False: The genetic material within a prokaryotic cell is
contained within a membrane-enclosed region. - correct
answer>>False Only eukaryotic cells contain its genetic material
within a nucleus. True or False: A cell that is adherent, flat (thin),
and unstained is easily identified using bright field microscopy. -
correct answer>>False
True or False: Archaea is noted for its ability to survive under harsh
conditions.
Correct! - correct answer>>True
, Archaea can often be found in harsh conditions such as high salt
levels, high acid conditions, high temperatures and even oxygen-
poor conditions.
True or False: Chloroplasts are specific to algae and plants. - correct
answer>>True
True or False: Chocolate agar gets its brown color from cocoa to
produce an enriched media. - correct answer>>False
Chocolate (cocoa) is never added to the media. The name is derived
simply based on the color that actually comes from the presence of
'cooked' (lysed) red blood cells in the media.
True or False: During fermentation one means of eliminating
pyruvate is by converting it into lactic acid. - correct answer>>True
Pyruvate can be converted into either lactic acid or ethanol and
then eliminated from the cell.
True or False: Enzymes slow down chemical reactions to conserve
energy. - correct answer>>False
True or False: Following the decolorization step of the Gram stain,
GramNegative bacteria will appear colorless. - correct answer>>True, Even
together, the LPS and thin peptidoglycan layer are unable to retain the
crystal violet dye during decolorization.
True or False: Growth media is best suited for distinguishing
between two similar species of bacteria. - correct answer>>False
