Textbook Question
The thick-walled reproductive spores produced in the middle of cyanobacterial filaments are called .
a. Akinetes
b. Terminal endospores
c. Metachromatic granules
d. Heterocysts
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Ch. 11 - Characterizing and Classifying Prokaryotes
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302
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Table of contents
- Ch. 1 - A Brief History of Microbiology31
- Ch. 2 - The Chemistry of Microbiology28
- Ch. 3 - Cell Structure and Function39
- Ch. 4 - Microscopy, Staining, and Classification25
- Ch. 5 - Microbial Metabolism51
- Ch. 6 - Microbial Nutrition and Growth37
- Ch. 7 - Microbial Genetics51
- Ch. 8 - Recombinant DNA Technology21
- Ch. 9 - Controlling Microbial Growth in the Environment36
- Ch. 10 - Controlling Microbial Growth in the Body: Antimicrobial Drugs21
- Ch. 11 - Characterizing and Classifying Prokaryotes29
- Ch. 12 - Characterizing and Classifying Eukaryotes34
- Ch. 13 - Characterizing and Classifying Viruses, Viroids, and Prions23
- Ch. 14 - Infection, Infectious Diseases, and Epidemiology35
- Ch. 15 - Innate Immunity34
- Ch. 16 - Adaptive Immunity21
- Ch. 17 - Immunization and Immune Testing29
- Ch. 18 - Immune Disorders22
- Ch. 19 - Pathogenic Gram-Positive Bacteria25
- Ch. 20 - Pathogenic Gram-Negative Cocci and Bacilli28
- Ch. 21 - Rickettsias, Chlamydias, Spirochetes, and Vibrios25
- Ch. 22 - Pathogenic Fungi47
- Ch. 23 - Parasitic Protozoa, Helminths, and Arthropod Vectors44
- Ch. 24 - Pathogenic DNA Viruses23
- Ch. 25 - Pathogenic RNA Viruses30
- Ch. 26 - Applied and Industrial Microbiology29
- Ch. 27 - Microbial Ecology and Microbiomes22
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302Not the one you use?Change textbook
Chapter 11, Problem 1
For each of the following statements that is true, write “true” in the blank. For each statement that is false, write the word(s) that should be substituted for the underlined word(s) to make the statement correct.
__________ All prokaryotes reproduce sexually.
Verified step by step guidance1
Step 1: Understand the key terms in the statement. 'Prokaryotes' are organisms without a nucleus, such as bacteria and archaea. 'Reproduce sexually' means combining genetic material from two parents to create offspring.
Step 2: Recall the typical modes of reproduction in prokaryotes. Most prokaryotes reproduce asexually through binary fission, which is a simple cell division process.
Step 3: Recognize that sexual reproduction, involving meiosis and fertilization, is characteristic of eukaryotes, not prokaryotes.
Step 4: Note that some prokaryotes can exchange genetic material through processes like conjugation, transformation, or transduction, but these are not sexual reproduction in the strict sense.
Step 5: Conclude that the statement is false and the phrase 'reproduce sexually' should be replaced with 'reproduce asexually' to make the statement correct.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Prokaryotic Reproduction
Prokaryotes reproduce primarily through asexual methods such as binary fission, where one cell divides into two identical cells. Sexual reproduction, involving genetic recombination through processes like conjugation, occurs but does not produce offspring directly. Understanding this distinction is key to evaluating statements about prokaryotic reproduction.
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Binary Fission
Binary fission is the main mode of reproduction in prokaryotes, where the cell duplicates its DNA and divides into two genetically identical daughter cells. This process is rapid and efficient, allowing prokaryotic populations to grow quickly without sexual reproduction.
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Genetic Recombination in Prokaryotes
Although prokaryotes do not reproduce sexually, they can exchange genetic material through processes like conjugation, transformation, and transduction. These mechanisms increase genetic diversity but do not constitute sexual reproduction because they do not result in the formation of new organisms.
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Related Practice
Textbook Question
Whereas the first edition of Bergey’s Manual relied on morphological and biochemical characteristics to classify microbes, the new edition focuses on ribosomal RNA sequences. List several other criteria for grouping and classifying bacteria.
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Textbook Question
Describe the location of these endospores within their cells.
(a) <Image>
(b) <Image>
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Textbook Question
The type of reproduction in prokaryotes that results in a palisade arrangement of cells is called ___________ .
a. pleomorphic division
b. endospore formation
c. snapping division
d. binary fission
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Textbook Question
Label the shapes of these prokaryotic cells.
a. ___________ <IMAGE>
b. ___________ <IMAGE>
c. ___________ <IMAGE>
d. ___________ <IMAGE>
e. ___________ <IMAGE> stiff
f. ___________ <IMAGE> flexible
g. ___________ <IMAGE>
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