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Lesson 24 The Evolution of Microbial Life Part II- Prokaryotes and Protists questions and answers
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Lesson 24 The Evolution of Microbial Life Part II- Prokaryotes and Protists questions and answers
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Lesson 24: TheEvolution of
Microbial Life:
Part II-
Prokaryotes and
Protists
questions and
answers
Microbiota - answer The community of microorganisms that live in
and on our bodies.
Prokaryotic Forms - answer ...
1) Cocci - answer Spherical prokaryotic cells
, 2) Baclli - answer Rod shaped prokaryotes
3) Spiral - answer
Size of Prokaryotes - answer - Unicellular but often exist in clusters
(ex: staphylococci is a group of coccus)
- Often dwarf eukaryotes in size
Biofilm - answer Prokaryotes attach to surfaces in a highly
organized colony containing several species of prokaryotes, protists
and fungi.
Biofilms are common among bacteria that cause human disease (ear
infections, UTIs)
Prokaryotic Reproduction - answer - Binary Fission: replicates copies
of DNA, rapid yield of genetic variation
- Prokaryotic populations can only grow for so long because they
run out of resources, pollute space with metabolic waster
Endospore - answer A thick coated protective cell produced within
the prokaryotic cell when the prokaryote is exposed to unfavorable
conditions.
Do not die even in boiling water so to sterilize lab equipment it is
usually placed in high pressure steamers.
Prokaryotic Nutrition - answer - Photosynthesis
- Energy from organic matter
- Harvest energy from inorganic substances such as ammonia
Symbiosis - answer A close association between organisms of two or
more species.
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