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2024 BIOLOGY 1108 PROKARYOTES BACTERIA AND ARCHAEA EXAM 1 WITH CORRECT ANSWERS
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2024 BIOLOGY 1108 PROKARYOTES BACTERIA AND ARCHAEA EXAM 1 WITH CORRECT ANSWERS
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2024 BIOLOGY 1108PROKARYOTES BACTERIA AND
ARCHAEA EXAM 1 WITH
CORRECT ANSWERS
Beneficial bacteria - CORRECT ANSWERS-Streptomyces (source of
antibiotics)
Anabaena (photosynthetic cyanobacteria and fix nitrogen)
Number of bacteria in and on the human body - CORRECT ANSWERS-Ten
times as many cells
Domain archaea: 3 groups - CORRECT ANSWERS-1. Methanogens
2. Extreme halophiles
3. Thermoacidophiles
Methanogens - CORRECT ANSWERS-*use molecular hydrogen to reduce
carbon dioxide to methane
*cannot survive in the presence of oxygen
*function as decomposers and symbionts
Prokaryotes - CORRECT ANSWERS-These are typically organisms with no
nucleus or major organelles within their cell Although they appear simple,
they can be biochemically and structurally very complex. Includes bacteria
and archaea
Eukaryotes - CORRECT ANSWERS-These are organisms with nuclei and
cellular organelles (sub-cellular components with specialized functions) such
as mitochondria, chloroplasts and cilia. They include all animals,plants, fungi,
and protists
Complexity of prokaryotes vs eukaryotes - CORRECT ANSWERS-Prokaryotes
are less complex than single celled eukaryotes
Prokaryotes: overview - CORRECT ANSWERS-*one of the most abundant
organisms on Earth
*most are small 0.5-5 and unicellular
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