Multiple Choice
Which type of organism is thought to be one of Earth's first organisms?
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1. Introduction to Microbiology
Introduction to Bacteria
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Which group includes the simplest organisms that do not have a nucleus?
A
Algae
B
Protozoa
C
Fungi
D
Bacteria
Verified step by step guidance1
Understand the key characteristic in the question: organisms that do not have a nucleus are called prokaryotes, while those with a nucleus are eukaryotes.
Recall that Algae, Protozoa, and Fungi are all eukaryotic organisms, meaning they have a defined nucleus in their cells.
Recognize that Bacteria are prokaryotic organisms, which means they lack a true nucleus and have simpler cell structures compared to eukaryotes.
Identify that among the options given, Bacteria represent the simplest organisms without a nucleus.
Conclude that the group including the simplest organisms without a nucleus is Bacteria.
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