Question 1

What is the arrangement of the bacteria shown in the first image?

Accepted Answer

Streptobacilli

Question 2

Which bacterial shape is depicted in the second image?

Accepted Answer

Vibrio

Question 3

Why is contamination with endospores a significant concern in clinical and industrial settings?

Accepted Answer

Endospores are highly resistant to killing.

Question 4

Which of the following genera are known to produce endospores?

Accepted Answer

Bacillus and Clostridium

Question 5

A Gram-negative bacillus that is an obligate anaerobe is isolated from a stool sample. Which genus is it most likely to belong to?

Accepted Answer

Bacteroides

Question 6

Which group of bacteria is named for its resemblance to fungi?

Accepted Answer

Actinomycetes

Question 7

Members of which genus are the most common sexually transmitted bacteria in the United States?

Accepted Answer

Chlamydia and Neisseria

Question 8

Which of the following is NOT a disease associated with bacteria that form endospores?

Accepted Answer

Tuberculosis

Question 9

What is a key characteristic of endospores?

Accepted Answer

Dormant, highly resistant survival structures

Question 10

Which manual is used for the classification and identification of bacteria?

Accepted Answer

Bergey's Manual of Systematic Bacteriology

Question 11

Methanogens, the largest known group of archaea, require which type of environment?

Accepted Answer

Anaerobic environments

Question 12

Which bacterial genus is useful for sewage treatment due to its ability to degrade organic matter?

Accepted Answer

Sphaerotilus

Question 13

Some members of the spirochetes move by means of which structure?

Accepted Answer

Axial filaments (endoflagella)

Question 14

A species of which genus is the leading cause of pneumonia?

Accepted Answer

Streptococcus

Question 15

The genus Mycobacterium includes species responsible for which diseases?

Accepted Answer

Tuberculosis and Leprosy

Question 16

Members of the genus Chlamydia are best described as:

Accepted Answer

Obligate intracellular parasites

Question 17

Pseudomonas species are occasional causes of which type of infections?

Accepted Answer

Hospital-acquired infections

Question 18

Diphtheria is caused by a member of which genus?

Accepted Answer

Corynebacterium

Question 19

Which equation best represents the process of methanogenesis carried out by methanogens?

Accepted Answer

$$CO_2 + 4H_2$$ \rightarrow $$CH_4 + 2H_2O$

Question 20

Which of the following best describes the reproduction of actinomycetes?

Accepted Answer

Asexual spore formation (conidia)

Microbiology Chapter 11 Review: Prokaryotic Diversity, Endospores, and Bacterial Morphology

Study Guide - Practice Questions