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MBIO 3401 EXAM 1 NEWEST 2025 ACTUAL
EXAM COMPLETE 200 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+|BRAND
NEW!!### Bacterial Structures and Functions
QUESTION: What are the components of the peptidoglycan cell
wall?
Answer: N-acetylglucosamine, N-acetylmuramic acid, peptides,
amino acids. What are the components of the peptidoglycan cell wall? N-acetylglucosamine, N-acetylmuramic acid, peptides, amino acids.
QUESTION: What cellular structure is made of polysaccharides
and glycoprotein and protects cells from phagocytosis?
Answer: The capsule What cellular structure is made of
polysaccharides and glycoprotein and protects cells from phagocytosis? The capsule
QUESTION: What are the shape-determining proteins of the
bacterial cytoskeleton?Answer: FtsZ: forms a z-ring in cocci cells; where cytokinesis
occurs. Pretty much all cells have FtsZ. MreB: forms a coil
inside bacilli cells; combination of FtsZ and MreB make the rod shape of bacillus cells. A lot of bacteria have MreB. CreS
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"crescentin": Forms a polymer along the inner side of crescent-
shaped bacteria. Less common structural protein. Cells that have CreS also have FtsZ and MreB proteins. What are the shape-
determining proteins of the bacterial cytoskeleton? FtsZ: forms
a z-ring in cocci cells; where cytokinesis occurs. Pretty much all
cells have FtsZ. MreB: forms a coil inside bacilli cells;
combination of FtsZ and MreB make the rod shape of bacillus
cells. A lot of bacteria have MreB. CreS "crescentin": Forms a
polymer along the inner side of crescent-shaped bacteria. Less common structural protein. Cells that have CreS also have FtsZ and MreB proteins.
QUESTION: For what reason might a bacterial cell divide
asymmetrically?
Answer: Change in environment may make it beneficial to
produce one stationary daughter cell and one mobile daughter cell. For what reason might a bacterial cell divide asymmetrically? Change in environment may make it beneficial to produce one stationary daughter cell and one mobile daughter cell.
QUESTION: What are extensively folded intracellular
membranes that are the site of conversion of sunlight into energy?
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Answer: Thylakoid. Extensively folded intracellular membranes
that are the site of conversion of sunlight into energy.Thylakoid.
QUESTION: What are polyhedral bodies packed with the
enzyme Rubisco for CO2 fixation, the site of the dark reaction (conversion of light energy into chemical energy)?
Answer: Carboxysomes. Polyhedral bodies packed with the
enzyme Rubisco for CO2 fixation; site of dark reaction (conversion of light energy into chemical energy) Carboxysomes.
QUESTION: What is a specialized structure used in attachment?
Answer: Pili. Specialized structure used in attachment. Pili.
QUESTION: What are specialized structures that are
membrane-embedded extensions of the cytoplasm, with tips secreting adhesion factors called holdfasts?
Answer: Stalks. Specialized structure that are membrane
embedded extensions of the cytoplasm. The tips of this structure secrete adhesion factors called holdfasts. Stalks.
QUESTION: What are intracellular connections that pass
material from one cell to the next?
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Answer: Nanotubes. Intracellular connections that pass material
from one cell to the next. Nanotubes.
QUESTION: What movement of flagella pushes the cell
forward?
Answer: Counterclockwise rotary. What movement of flagella
push the cell forward? Counterclockwise rotary.
QUESTION: What kind of cells have flagella randomly
distributed around the cell that rotate together in a bundle behind the swimming cell?
Answer: Peritrichous. These kinds of cells have flagella
randomly distributed around the cell that rotate together in a bundle behind the swimming cell. Peritrichous.
QUESTION: What kind of cells have flagella at the ends of the
cell?
Answer: Lophotrichous cells. These cells have flagella at the
ends of the cell. Lophotrichous cells.
QUESTION: What kind of cells have a single flagellum?
Answer: Monotrichous. These cells have a single flagellum.
Monotrichous.