Self Quiz for Sizes, Shapes, and Arrangements of Bacteria

Study the material in this section and then write out the answers to these questions.
Do not just click on the answers and write them out. This will not test your understanding of this tutorial.

1. Match the following descriptions with the best answer.

_____ Division in one plane; cocci arranged in pairs (ans)

_____ Division in one plane; cocci arranged in chains (ans)

_____ Division in two planes; cocci arranged in a square of four (ans)

_____ Division in one plane; rods completely separate after division. (ans)

_____ Division in one plane; rods arranged in chains. (ans)

_____ A comma shaped bacterium. (ans)

_____ A thin, flexible spiral. (ans)

_____ A thick, rigid spiral. (ans)

A. bacillus
B. streptobacillus
C. spirochete
D. spirillum
E. vibrio
F. streptococcus
G. staphylococcus
H. diplococcus
I. tetrad
J. sarcina

2. A Gram stain of discharge from an abcess shows cocci in irregular, grape-like clusters. What is the most likely genus of this bacterium? (ans)

3. State the diameter of an average-sized coccus-shaped bacterium. (ans)

4. Multiple Choice (ans)

• RETURN TO "SIZES, SHAPES, AND ARRANGEMENT OF BACTERIA"
• RETURN TO UNIT 1 TABLE OF CONTENTS

Gary E. Kaiser, Ph.D.
Professor of Microbiology
The Community College of Baltimore County, Catonsville Campus
This work is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work The Grapes of Staph at https://cwoer.ccbcmd.edu/science/microbiology/index_gos.html.

Last updated: Feb., 2018
Please send comments and inquiries to Dr. Gary Kaiser