Bacterial Cell Characteristics Quiz
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Questions and Answers

Which unit is used to measure the size of bacterial cells?

  • Micron (correct)
  • Centimeter
  • Millimeter
  • Nanometer

What shape is a bacilli bacterial cell?

  • Spiral
  • Vibrio (correct)
  • Angular
  • Cocci or spherical

What color does a Gram-positive bacterial cell appear after staining?

  • Pink
  • Violet (correct)
  • Red
  • Blue

What is the shape of spiral bacterial cells called?

<p>Spirochetes (A)</p> Signup and view all the answers

True or false: Bacterial cells can be measured in millimeters.

<p>False (B)</p> Signup and view all the answers

True or false: Gram-positive bacterial cells appear pink after staining.

<p>False (B)</p> Signup and view all the answers

True or false: Vibrio bacteria have a curved shape.

<p>True (A)</p> Signup and view all the answers

True or false: Spirochetes bacteria can have more than one curve.

<p>True (A)</p> Signup and view all the answers

True or false: Bacterial cells have a capsule?

<p>True (A)</p> Signup and view all the answers

True or false: Bacterial cells have a cell wall?

<p>True (A)</p> Signup and view all the answers

True or false: Bacterial cells have flagella?

<p>True (A)</p> Signup and view all the answers

Which structure is responsible for the shape of a bacterial cell?

<p>Cell wall (B)</p> Signup and view all the answers

Which component is involved in protein synthesis in a bacterial cell?

<p>Ribosomes (B)</p> Signup and view all the answers

Which appendage is involved in bacterial motility?

<p>Flagella (A)</p> Signup and view all the answers

Flashcards

What unit measures bacterial cell size?

Micron is a unit of length equal to one millionth of a meter, commonly used for measuring the size of small objects, including bacterial cells.

What shape are bacilli bacteria?

Bacilli are rod-shaped bacterial cells, with a straight, cylindrical form.

What color do Gram-positive bacteria appear after staining?

Gram-positive bacteria retain the violet dye used in the Gram staining technique, resulting in a purple appearance under the microscope.

What shape are spiral bacteria called?

Spiral bacteria are known as spirochetes, possessing a helical or corkscrew shape.

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Can bacterial cells be measured in millimeters?

Bacterial cells are too small to be measured in millimeters. Millimeters are too large and would not provide an accurate representation of their miniature size.

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Do Gram-positive bacteria appear pink after staining?

Gram-positive bacteria retain the violet dye during the Gram staining procedure, resulting in a purple appearance. They do not appear pink.

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Do Vibrio bacteria have a curved shape?

Vibrio bacteria are curved or comma-shaped. They have a distinct bend, unlike straight bacilli.

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Can spirochetes bacteria have more than one curve?

Spirochetes can have multiple curves, creating a complex spiral or corkscrew shape.

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Do bacterial cells have a capsule?

A capsule is a protective outer layer found in some bacterial cells, providing an extra layer of defense and aiding in attachment.

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Do bacterial cells have a cell wall?

A cell wall is a rigid structure that surrounds the cell membrane of bacterial cells. It maintains the cell's shape and protects it from external pressure.

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Do bacterial cells have flagella?

Flagella are whip-like structures that extend from the surface of some bacteria. They enable movement and locomotion.

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Which structure is responsible for the shape of a bacterial cell?

The cell wall provides the shape and structural support for bacterial cells.

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Which component is involved in protein synthesis in a bacterial cell?

Ribosomes are cellular organelles responsible for protein synthesis. They are found in both eukaryotes and prokaryotes, including bacteria.

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Which appendage is involved in bacterial motility?

Flagella are hair-like appendages that provide motility for some bacteria. They propel the cell through its environment.

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