Term
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Definition
| the study of interrealtionships between organism and their environment |
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Term
| What is an example of a prime niche in a microenvironment? |
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Definition
| a lion preying on a hyena |
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Term
| Characteristics of a microenvironment |
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Definition
| spacially very small, physical/chemical conditions can change rapidly |
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Term
| TF Microenvironments are homogeneous |
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Definition
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Term
| TF nutrients are in short supply in microenvironments |
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Definition
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Term
| TF nutrient distribution is uniform in microenvironments |
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Definition
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Term
| TF periods of optimal growth are rare in microenvironments |
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Definition
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Term
| Rates of nutrient uptake and growth rates are affected by _______ |
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Definition
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Term
| What helps to inhibit competitors? |
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Definition
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Term
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Definition
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Term
| What four points are made about cooperation? |
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Definition
| syntrophy, complementary metabolisms close associations, consortia |
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Term
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Definition
| microbials gluing themselves together. |
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Term
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Definition
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Term
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Definition
| living in/on. organism gets the benefit, host gets no benefit. |
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Term
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Definition
| 2 living together, no effect on each other |
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Term
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Definition
| organism lives below the radar, can cause problems. |
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Term
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Definition
| coming together and doing something they cannot do alone. Example: digesting bark |
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Term
| Phototrophic microorganisms are ____ producers |
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Definition
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Term
| What are examples of phototrophic microorganisms? |
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Definition
| phytoplankton, benthic algae |
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Term
| In aquatic habitats, what affects the rate of primary production? |
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Definition
| biologic activity (driven by sunlight) |
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Term
| What percent of bugs are found on the surface? |
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Definition
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Term
| What do the surfaces of things do? 2 things |
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Definition
| adsorbtion of nutrients, nutrient itself |
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Term
| What are biofilms and what are they attached by? |
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Definition
| microcolonies encased in and attached by polysaccharides |
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Term
| What prevent detachment and concentrate nutrients? |
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Definition
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Term
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Definition
| chemical messengers - they coordinate production |
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Term
| Where does gas/nutrient exchange occur? |
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Definition
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Term
| What are the 4 biochemical lifecycles? |
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Definition
| carbon, nitrogen, sulfur, iron |
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Term
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Definition
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Term
| TF for carbon fixation and energy flow, the terrestrial and aquatic evironment contribute equally |
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Definition
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Term
| What dominate terrestrial enviro |
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Definition
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Term
| what dominate aquatic environments |
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Definition
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Term
| Where is most of the carbon in the world? |
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Definition
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Term
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Definition
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Term
| Where can photosynthesis occur? |
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Definition
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Term
| What aids in decomposition (in reference to the carbon cycle) |
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Definition
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Term
| What metals are affected by microbial leaching? |
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Definition
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Term
| What is heavy metal transformation? |
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Definition
| heavy metal pollution: microbes will trap them in marshes |
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Term
| What is petroleum biodegredation? |
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Definition
| the most "light weight" was eaten |
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Term
| Xenobiotic biodegradation |
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Definition
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Term
| What two types of plants are in root nodule bacteria? |
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Definition
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Term
| Is root nodule bacteria gram (-) or (+)? |
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Definition
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Term
| What are the benefits of root nodules for plants and bacterium? |
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Definition
plants: reliable N2 source
Bacterium: stable, nutrient rich environment |
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Term
| TF root nodule bacteria has low species specificity |
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Definition
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Term
| How many microbial cells are in humans? |
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Definition
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Term
| what are the benefits of normal human flora? |
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Definition
| exclusion of pathogens and nutrients |
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Term
| What are the harmful effects of human microflora? |
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Definition
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Term
| What are most skin organisms associated with? |
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Definition
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Term
| What type of environment is skin? |
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Definition
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Term
| Gram -/+ organisms dominate on the skin? |
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Definition
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Term
| Transient vs resident flora |
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Definition
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Term
| What are the two antibacterial components of saliva? |
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Definition
| lysozyme and lactoperoxidase |
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Term
| What are the two ways bacteria shows up on teeth? |
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Definition
| cavities and dental plaque |
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Term
| What two vitamins do you find in the intestinal tract? |
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Definition
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Term
| Where are steroids modified? |
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Definition
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Term
| What is ~33% weight of feces? |
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Definition
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Term
| Chemostat in the large intestine |
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Definition
| keep it at a normal level |
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Term
| What types of membranes are in the upper tract of the respiratory system? |
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Definition
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Term
| What is in the lower tract of the respiratory tract? |
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Definition
| ciliated epithelial cells, particles and resident lung flora |
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Term
| what do you find in the urethra |
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Definition
| falcutative negative rods and cocci, opportunistic pathogens |
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Term
| What is the vagina like, pre puberty? |
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Definition
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Term
| what is the adult vagina like? |
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Definition
| glycogen produced, acidic (lactobacilli) |
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Term
| What is vagina like post menopause |
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Definition
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