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Ch. 11 - Characterizing and Classifying Prokaryotes
Bauman - Microbiology with Diseases by Taxonomy 6th Edition
Bauman6th EditionMicrobiology with Diseases by TaxonomyISBN: 9780134832302당신이 사용하는 게 아니라요?교과서 변경
11장, 문제 2

The thick-walled reproductive spores produced in the middle of cyanobacterial filaments are called                  .


a. Akinetes
b. Terminal endospores
c. Metachromatic granules
d. Heterocysts

검증된 단계별 안내
1
Understand the types of specialized cells or structures found in cyanobacteria, focusing on their functions and characteristics.
Recall that heterocysts are specialized nitrogen-fixing cells, not reproductive spores, so option (d) can be ruled out.
Recognize that metachromatic granules are storage inclusions, not spores, so option (c) is not correct.
Know that terminal endospores are not typical for cyanobacteria; endospores are more common in certain bacteria like Bacillus species, so option (b) is unlikely.
Identify that akinetes are thick-walled dormant spores formed in the middle of cyanobacterial filaments, serving as reproductive or survival structures, making option (a) the correct answer.

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이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
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2m
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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Akinetes

Akinetes are thick-walled dormant spores formed by some cyanobacteria to survive unfavorable conditions. They develop in the middle of filaments and contain stored nutrients, allowing the organism to endure environmental stress until conditions improve.

Heterocysts

Heterocysts are specialized nitrogen-fixing cells found in some filamentous cyanobacteria. They have thick walls to create an anaerobic environment necessary for nitrogenase activity but are not reproductive spores.

Metachromatic Granules and Endospores

Metachromatic granules are storage inclusions rich in polyphosphate, not spores. Endospores are resistant spores formed by some bacteria like Bacillus, but cyanobacteria do not produce terminal endospores.
추천 영상:
05:35
Endospores