Scelta multipla
Which of the following lists correctly identifies the four major groups of protozoans based on their mode of locomotion?
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1. Introduction to Microbiology
Introduction to Taxonomy
Scelta multipla
In the three-domain system of classification, how many kingdoms are recognized within the domain Bacteria?
A
0 (the domain Bacteria is not divided into kingdoms in this system)
B
1 kingdom
C
5 kingdoms
D
2 kingdoms
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Understand the three-domain system of classification, which divides all life into three domains: Bacteria, Archaea, and Eukarya.
Recognize that within this system, the domain Bacteria is considered a single domain without further subdivision into kingdoms.
Recall that the traditional kingdom classification applies mainly to the domain Eukarya, where multiple kingdoms exist (such as Animalia, Plantae, Fungi, etc.).
Note that in the three-domain system, Bacteria and Archaea are treated as separate domains but are not divided into kingdoms because their diversity is classified differently, often at the phylum level.
Conclude that the number of kingdoms recognized within the domain Bacteria in the three-domain system is zero.
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