Bacteriology unit 2

What is the typical mode of reproduction for bacteria?

• Budding

• Spore formation

• Binary fission

• Mitosis

Bacteria whose nuclear material consists of DNA that may appear in a circular, ellipsoidal, or dumbbell shape are generally classified as having which type of genetic material structure?

• Nucleus

• Mitochondria

• Nucleoid

• Chromatin

A bacterium described as a coccus has what shape?

• Rod-shaped

• Spiral-shaped

• Filamentous

• Spherical or ellipsoidal

Which term describes a bacterial cell that possesses no flagellum?

• Monotrichous

• Amphitrichous

• Peritrichous

• Atrichous

What color do Gram-Positive bacteria appear after a successful Gram-stain due to the retention of the crystal violet dye?

• Red or Pink

• Green or Yellow

• Purple or Blue

• Transparent

What is the toxic component of the Lipopolysaccharide (LPS) coat in Gram-negative bacteria that acts as an endotoxin?

• Oligosaccharide Side Chain

• Braun's Lipoprotein

• Lipid-A

• Peptidoglycan

All prokaryotes, including bacteria, possess ribosomes with what Svedberg unit (S) size?

• 80S

• 90S

• 70S

• 60S

Which type of bacterial colony border is described as extending unevenly from the center with asymmetrical borders?

• Circular

• Loboid

• Rhizoid

• Irregular

What is the term for nutrient storage structures within the bacterial cell that are non-living components, do not possess metabolic activity, and are not bounded by membranes?

• Microcysts

• Inclusions

• Plasmids

• Volutin Granules

The symptom caused by bacteria that involves hypertrophy and hyperplasia of meristematic and parenchymatous tissues, as seen in crown gall, is known as a

• Canker

• Blight

• Soft Rot

• Gall