OBJECTIVE LIFE SCIENCE
DIVERSITY AMONG LIFE FORMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A structure produced by prokaryotes, such as bacteria, in unfavorable conditions; a thick-wall encloses the DNA and some of the cytoplasm.
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Endospore
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Parasite
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Flagellum
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Gill
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Explanation:
Detailed explanation-1: -Some bacteria are able to produce a thick wall around them-selves when environmental conditions are unfavorable. Inside this thick-walled structure, the bacterium produces a dormant form called an endospore.
Detailed explanation-2: -Cell Structure Prokaryotes have a nucleoid (nuclear body) rather than an enveloped nucleus and lack membrane-bound cytoplasmic organelles.
Detailed explanation-3: -Prokaryotic cell walls may be composed of peptidoglycan (bacteria) or pseudopeptidoglycan (archaea). Gram-positive bacterial cells are characterized by a thick peptidoglycan layer, whereas gram-negative bacterial cells are characterized by a thin peptidoglycan layer surrounded by an outer membrane.
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