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25 Cards in this Set
- Front
- Back
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what is a ribozyme?
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self-reproducing RNA molecule
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Person: Living things appear by spontaneous generation from the non-living
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Aristotle
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Person: 1st experiment had flies appear in a jar w/ a rotting piece of meat, he then covered with gauze and no flies appeared.
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Francisco Redi
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Who did experiments that disproved the idea of spontaneous generation of organisms?
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Pasteur and Redi
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what kingdom fits into two domains- Eukarea and Bacteria?
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monera
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What is the only metabolic pathway common to all organism that doesn't require oxygen?
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Glycolosis
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Which kind of bacteria stains easier (gram stain)
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Gram Positive, because the large peptioglycan cell wall traps the dye and
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Difference bt/w Gram-Positive and Gram-negative bacteria?
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Gram Positive has a plasma membrane and a large peptidoglycan cell wall. Gram-negative has a smaller cell wall and an additional plasma membrane layer
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Which kind of gram bacteria is more threatening as far as disease and is more resistant to antibiotics?
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Gram-Negative
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How do prokaryotic cells reproduce?
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Binary fission
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What is a capsule?
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prokaryote's sticky external layer of polysaccharide or protein
Helps aid in sticking to substrates, and shields from attacks by the host's immune system |
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what are fimbriae/ pili?
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hairlike appendages that help aid prokaryotes' in adherance
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T or F. Prokaryotes can survive w/o plasmids in most environments.
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T
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What are endospores?
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Resistant cells formed by bacteria.
Most can survive in boiling water |
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How do obligate anaerobes get chemical energy?
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Fermentation or anaerobic respiration
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what is nitrogen fixation?
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conversion of nitrogen to ammonia
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What kind of bacteria causes Botulism, Tuberculosis, Anthrax, and Leprosy?
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Gram-Positive.
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What kind of bacteria causes Syphilis and Lyme disease?
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Spirochetes
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What kind of bacteria causes Salmonella endotoxins and Campylobacter.
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Proteobacteria
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What kind of bacteria did Mitochondria evolve from?
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Alpha Proteobacteria
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what kind of bacteria lacks peptidoglycan cell walls and is composed of parasites present in only animal cells?
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Chlamydias
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What kind of bacteria did chloroplastes likely evolve from?
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Cyanobacteria
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What illness(es) are caused by Exotoxins?
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Cholera and Botulism
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What illness(es) are caused by endotoxins?
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Salmonella
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what kind of organisms are used in bioremediation?
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prokaryotes
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