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18 Cards in this Set
- Front
- Back
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What is commensalism? |
a species interaction where one benefits and the other is not affected (ex. sloth with algae on fur) |
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What is mutualism? |
Interaction where both species benefit |
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What is interspecific competition? |
Involves two different species competing for the same resources, resulting in both being harmed |
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What is an ecosystem? |
a large encompassing area with a lot of habitats, communities, and abiotic factors |
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What is the primary energy source of an ecosystem? |
the sun |
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Who are the participants of an ecosystem? |
Producers, Consumers, and Decomposers |
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Only 10% of total energy from an organism is passed to the next organism in the chain |
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What is the only type of Eukarya not found in the human body? |
plants |
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Two species cannot coexist stably and occupy identical niches |
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What are mutualistic bacteria? |
bacteria that benefits from us and also gives us benefits |
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What are opportunistic pathogens? |
Disease causing organisms that have a niche on the human body but will spread if they can (ex. staph on skin) |
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What are the 3 benefits humans receive from bacteria? |
1. prevent colonization by pathogens 2. nutritional benefits 3. stimulate immune system` |
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What types of good bacteria are in our mouths? |
hydrogen peroxide secretors that fight pathogens |
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What types of bad bacteria are in our mouths? |
pathogens that cause gum disease and tooth decay. The communities form a biofilm over the teeth and gums |
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What types of good bacteria are in our stomachs? |
Bacteria that prevent pathogen colonization |
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What types of bad bacteria are in our stomachs? |
H. pylori, an opportunistic pathogen that embeds in mucus lining and causes ulcers if it reaches living tissue |
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What types of good bacteria are in our intestines? |
bacteria that break down food and produce vitamins such as e coli |
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What types of bad bacteria are in our intestines? |
e. coli 0157 has a gene to produce toxins, causing food poison |
