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Chapter 2: Microbial Cell Structure and Function
Directed Motility
Surface Structures & Inclusions
Membrane Composition & Characteristics
Cell Shape and Size
Prokaryotic
Cell Walls
FINAL ROUND
Questions by Paul Lepp, Minot State University


Topic 1: Directed Motility $100 Question
Which type of taxis would a cyanobacterium use to move toward a more hydrated environment?

aerotaxis
hydrotaxis
osmotaxis
phototaxis
ANSWER
BACK TO GAME


Topic 1: Directed Motility $100 Answer
Which type of taxis would a cyanobacterium use to move toward a more hydrated environment?

aerotaxis
hydrotaxis
osmotaxis
phototaxis
BACK TO GAME


Topic 1: Directed Motility $200 Question
True or False: Cells can move both toward a gradient and away from a gradient.

TRUE
FALSE
ANSWER
BACK TO GAME


Topic 1: Directed Motility $200 Answer
True or False: Cells can move both toward a gradient and away from a gradient.

TRUE
FALSE
BACK TO GAME


Topic 1: Directed Motility $300 Question
Which structural components allow for motility in Escherichia coli?

cilia
peritrichous flagella
pili
polar flagella
ANSWER
BACK TO GAME


Topic 1: Directed Motility $300 Answer
Which structural components allow for motility in Escherichia coli?

cilia
peritrichous flagella
pili
polar flagella
BACK TO GAME


Topic 1: Directed Motility $400 Question
Bacterial cells can sense a gradient ONLY by identifying ________ changes rather than ________ differences because of their small ________.

spatial / temporal / cell size
spatial / temporal / chemoreceptors
temporal / spatial / cell size
temporal / spatial / chemoreceptors
ANSWER
BACK TO GAME


Topic 1: Directed Motility $400 Answer
Bacterial cells can sense a gradient ONLY by identifying ________ changes rather than ________ differences because of their small ________.

spatial / temporal / cell size
spatial / temporal / chemoreceptors
temporal / spatial / cell size
temporal / spatial / chemoreceptors
BACK TO GAME


Topic 1: Directed Motility $500 Question
A glass capillary tube containing a chemical was placed inside a turbid axenic culture of cells. Most cells moved away from the tube, but some cells were found inside the capillary tube. The chemical is likely

an attractant to all cells, but only a few had time to go into the tube.
an attractant to most cells and a repellent to those within the tube.
a repellent to all cells, and some cells by chance were within the tube.
a repellent to most cells and an attractant to those within the tube.
ANSWER
BACK TO GAME


Topic 1: Directed Motility $500 Answer
A glass capillary tube containing a chemical was placed inside a turbid axenic culture of cells. Most cells moved away from the tube, but some cells were found inside the capillary tube. The chemical is likely

an attractant to all cells, but only a few had time to go into the tube.
an attractant to most cells and a repellent to those within the tube.
a repellent to all cells, and some cells by chance were within the tube.
a repellent to most cells and an attractant to those within the tube.
BACK TO GAME


Topic 2: Surface Structures & Inclusions $100 Question
True or False: Fimbriae and pili are both composed of proteins.

TRUE
FALSE
ANSWER
BACK TO GAME


Topic 2: Surface Structures & Inclusions $100 Answer
True or False: Fimbriae and pili are both composed of proteins.

TRUE
FALSE
BACK TO GAME


Topic 2: Surface Structures & Inclusions $200 Question
Which structure is involved in the genetic exchange (conjugation) between cells?

capsule
fimbria
pilus
porin
ANSWER
BACK TO GAME


Topic 2: Surface Structures & Inclusions $200 Answer
Which structure is involved in the genetic exchange (conjugation) between cells?

capsule
fimbria
pilus
porin
BACK TO GAME


Topic 2: Surface Structures & Inclusions $300 Question
Which of the following is NOT a function of type IV pili?

cell adhesion
defense by poking holes in other cells
exchange of genetic material
gliding motility
ANSWER
BACK TO GAME


Topic 2: Surface Structures & Inclusions $300 Answer
Which of the following is NOT a function of type IV pili?

cell adhesion
defense by poking holes in other cells
exchange of genetic material
gliding motility
BACK TO GAME


Topic 2: Surface Structures & Inclusions $400 Question
How are capsules and slime layers distinguished from one another?

adherence to cell wall and rigidity
location on cell and rigidity
location on cell and thickness
rigidity, thickness, and adherence to cell wall
ANSWER
BACK TO GAME


Topic 2: Surface Structures & Inclusions $400 Answer
How are capsules and slime layers distinguished from one another?

adherence to cell wall and rigidity
location on cell and rigidity
location on cell and thickness
rigidity, thickness, and adherence to cell wall
BACK TO GAME


Topic 2: Surface Structures & Inclusions $500 Question
Which inclusion body/bodies is/are hypothesized to direct some bacteria down toward sediments?

elemental sulfur granules
polyphosphate granules
poly-β-hydroxybutyrate
magnetosomes
ANSWER
BACK TO GAME


Topic 2: Surface Structures & Inclusions $500 Answer
Which inclusion body/bodies is/are hypothesized to direct some bacteria down toward sediments?

elemental sulfur granules
polyphosphate granules
poly-β-hydroxybutyrate
magnetosomes
BACK TO GAME


Topic 3: Membrane Composition & Characteristics $100 Question
Which is the ONLY group of microorganisms that contain lipopolysaccharides (LPS)?

a. Archaea
b. Bacteria
c. gram-positive bacteria
d. gram-negative