Textbook Question
Of the following genera, which can survive the harshest conditions?
a. Staphylococcus
b. Clostridium
c. Mycobacterium
d. Actinomyces
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1. Introduction to Microbiology
Members of the Bacterial World
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Which of the following cellular structures are found in bacteria?
A
Ribosomes
B
Mitochondria
C
Membrane-bound nucleus
D
Chloroplasts
Verified step by step guidance1
Step 1: Understand the basic cellular structure of bacteria. Bacteria are prokaryotic organisms, meaning they lack membrane-bound organelles such as a nucleus, mitochondria, and chloroplasts.
Step 2: Identify which cellular structures are typical of prokaryotes. Ribosomes are present in all cells, including bacteria, and are responsible for protein synthesis.
Step 3: Recognize that mitochondria and chloroplasts are membrane-bound organelles found only in eukaryotic cells, not in bacteria.
Step 4: Note that bacteria do not have a membrane-bound nucleus; instead, their genetic material is located in a nucleoid region without a surrounding membrane.
Step 5: Conclude that among the options given, only ribosomes are found in bacteria because they are essential for protein production in all living cells.
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