Microbiology BIOD 171 Final Exam –
Portage Learning 2025 | Fully Solved |
Verified Answers | A+ Score Guaranteed
Which of the following are considered Protista? Select all that apply:
- Bacteria
- Amoeba
- Algae
- Yeast - Answer - Amoeba
- Algae
True or False: A defining characteristic of Protista is the inability of colonies to form
tissue layers - Answer True
The function of the ribosome is (select all that apply):
- To produce energy (ATP)
- Lipid Synthesis
- Protein Synthesis
- Waste disposal via hydrolytic enzymes - Answer - Protein synthesis: ribosomes are
located in the cytoplasm of prokaryotic cells and in the ER of eukaryotic cells.
Cell walls are found in which of the following (select all that apply):
- Algae
- Bacteria
- Mammalian cells
- Plants
- Fungi - Answer - Algae
- Bacteria
- Plants
- Fungi
The function of the mitochondria is (select all that apply):
- To produce energy
- Protein synthesis
- waste disposal via hydrolytic enzymes
- Protein modification and distribution
- lipid synthesis - Answer - To produce energy: Mitochondria are considered the power
plant of the cell, as it produces ATP
True or False: All multicellular microorganisms classified as Animalia are autotrophic -
Answer False - they are heterotrophic
How many ATP does the tricarboxylic acid (TCA) cycle produce per pyruvate?
- 2 ATP
- 34 ATP
1
, - 4 ATP
- 1 ATP - Answer - 1 ATP: The TCA produces only 1 ATP per pyruvate
In the absence of glucose, which of the following can be used as alternative energy
sources? Select all that apply:
- Nucleic Acids
- Lactose
- Carbohydraes
- Lipids - Answer - Lactose
- Carbohydrates
- Lipids
True or False: The beta-oxidation pathway catabolizes the fatty acid chains of lipids -
Answer True
True or False: Plants, algae and bacteria all contain chloroplasts - Answer False -
Chloroplasts are specific to algae and plants only
The process of photophosphorylation produces which of the following: Select all that
apply.
- ATP
- Glyceraidenhyde 3-phosphate
- NADPH
- H20
- C02 - Answer - ATP
- NADPH
Short Answer : What is one of the main functions of light reactions? - Answer - to
generate ATP via proton concentration gradient
True or False: The Calvin cycle must occur in the absence of light - Answer False - the
term "dark reactions" (also known as the Calvin cycle) simply denotes the second stage
in photosynthesis - dark reactions do not actually require darkness in order to occur
True or False: Following the decolorization step of the Gram stain, Gram-negative
bacteria will appear colorless - Answer True - even together, the LPS and thin
peptidoglycan layer are unable to retain the crystal violet dye during decolorization
True or False: if you wish to study motility of an organism you cannot heat fix, but you
can chemically fix the specimen? - Answer False - both heat and chemical strategies
will kill the cell, making motility observations impossible
Short Answer : You want to observe the size and shape of a cell. What is the easiest
staining technique that you could perform? Name at least one dye you would use during
this process. - Answer Simple stain - the dyes you could use could be:
- Methylene Blue
2
Portage Learning 2025 | Fully Solved |
Verified Answers | A+ Score Guaranteed
Which of the following are considered Protista? Select all that apply:
- Bacteria
- Amoeba
- Algae
- Yeast - Answer - Amoeba
- Algae
True or False: A defining characteristic of Protista is the inability of colonies to form
tissue layers - Answer True
The function of the ribosome is (select all that apply):
- To produce energy (ATP)
- Lipid Synthesis
- Protein Synthesis
- Waste disposal via hydrolytic enzymes - Answer - Protein synthesis: ribosomes are
located in the cytoplasm of prokaryotic cells and in the ER of eukaryotic cells.
Cell walls are found in which of the following (select all that apply):
- Algae
- Bacteria
- Mammalian cells
- Plants
- Fungi - Answer - Algae
- Bacteria
- Plants
- Fungi
The function of the mitochondria is (select all that apply):
- To produce energy
- Protein synthesis
- waste disposal via hydrolytic enzymes
- Protein modification and distribution
- lipid synthesis - Answer - To produce energy: Mitochondria are considered the power
plant of the cell, as it produces ATP
True or False: All multicellular microorganisms classified as Animalia are autotrophic -
Answer False - they are heterotrophic
How many ATP does the tricarboxylic acid (TCA) cycle produce per pyruvate?
- 2 ATP
- 34 ATP
1
, - 4 ATP
- 1 ATP - Answer - 1 ATP: The TCA produces only 1 ATP per pyruvate
In the absence of glucose, which of the following can be used as alternative energy
sources? Select all that apply:
- Nucleic Acids
- Lactose
- Carbohydraes
- Lipids - Answer - Lactose
- Carbohydrates
- Lipids
True or False: The beta-oxidation pathway catabolizes the fatty acid chains of lipids -
Answer True
True or False: Plants, algae and bacteria all contain chloroplasts - Answer False -
Chloroplasts are specific to algae and plants only
The process of photophosphorylation produces which of the following: Select all that
apply.
- ATP
- Glyceraidenhyde 3-phosphate
- NADPH
- H20
- C02 - Answer - ATP
- NADPH
Short Answer : What is one of the main functions of light reactions? - Answer - to
generate ATP via proton concentration gradient
True or False: The Calvin cycle must occur in the absence of light - Answer False - the
term "dark reactions" (also known as the Calvin cycle) simply denotes the second stage
in photosynthesis - dark reactions do not actually require darkness in order to occur
True or False: Following the decolorization step of the Gram stain, Gram-negative
bacteria will appear colorless - Answer True - even together, the LPS and thin
peptidoglycan layer are unable to retain the crystal violet dye during decolorization
True or False: if you wish to study motility of an organism you cannot heat fix, but you
can chemically fix the specimen? - Answer False - both heat and chemical strategies
will kill the cell, making motility observations impossible
Short Answer : You want to observe the size and shape of a cell. What is the easiest
staining technique that you could perform? Name at least one dye you would use during
this process. - Answer Simple stain - the dyes you could use could be:
- Methylene Blue
2
