MBIO 3401 EXAM 1 NEWEST ACTUAL

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MBIO 3401 EXAM 1 NEWEST 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.