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38 Cards in this Set
- Front
- Back
The main inorganic source of phosphorus is ?
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Phosphate(PO4,3-)
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Phosphorus is found in ? and ? mineral deposits
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rocks
oceanic |
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Phosphorus is a ? nutrient
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essential
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Where is phosphorus found in living organisms?
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Phospholipid bilayer,DNA,RNA,ATP
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? is an important nutrient involved in protein synthesis and membrane function
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Potassium(K)
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? is an important nutrient involved in certain types of cell transport
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Sodium(Na)
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? acts as a stabilizer of cell walls and endospores
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Calcium(Ca)
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? is a component of chlorophyll and stabilizer of membranes and ribosomes
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Magnesium(Mg-)
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? is an important component of cytochrome proteins that participated in the ETC
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Iron(Fe)
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? is an essential regulatory element for eukaryotic genetics, and binding factors for enzymes, it controls what genes are turned on and off
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Zinc(Zn)
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An organic compound such as an amino-acid, nitrogenous base, or vitamin that cannot be ? by an organism and must be provided as a nutrient is a ?
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synthesized
growth factor |
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An amino acid that cannot be synthesized by a cell and must be obtained from a food source is a ? amino acid
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essential
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All bacteria are subdivided by their energy source as ? or ?
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phototrophs
chemotrophs |
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Microbes that gain energy from chemical compounds are called ?
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Chemotrophs
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Microbes that photosynthesize are called ?
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phototrophs
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? are photosynthetic, they capture the energy of light rays and transform it into chemical energy that can be used in cell metabolism
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Photoautotrophs
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Because photosynthetic organisms such as ?,?,and? produce organic molecules that can be used by themselves and heterotrophs, they form the basis for most ? webs
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algae, plant, some bacteria
food |
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There are two type of Chemoautotrophs ? and ?
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chemoorganic autotrophs
lithoautotrophs |
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? use organic compounds for energy and inorganic compounds as a carbon source
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chemoorganic autotrophs
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? require neither sunlight nor organic nutrients, they rely totally on inorganic minerals. They remove ? from inorganic substrates such as hydrogen gas, hydrogen sulfide, sulfur, or iron and combine them with CO2 and H, which provides simple organic molecules and a modest amount of energy to drive the ? processes of the cell
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lithoautotrophs
electrons synthetic |
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? produce methane from H2 and CO2(4H2+CO2>CH4+H2O).
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Methanogens
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CH4 is ?
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methane
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Methanogens are from the Domain ? and some live in ? habitats
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Archae
extreme |
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The majority of heterotrophic microorganisms are ?-heterotrophs that derive both carbon and energy from ? compounds
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chemo-
organic |
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Chemoheterotrophs process organic molecules by ? or ? which release energy in the form of ?
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respiration
fermentation ATP |
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Chemoheterotrophs are broken into two categories ? and ?
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saprobes
parasites |
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? are free living microorganism that feed primarily on organic detritus from dead organisms
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Saprobes
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? ordinarily derive nutrients from the cells of tissues of a host
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parasites
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Most saprobes, notably ? and ?, have a ? cell wall and cannot engulf large particles of food.
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bacteria
fungi rigid |
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Saprobes release ? to the external environment which digest food particles into smaller molecules that can be transported across their rigid cell wall
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exoenzymes
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? saprobes exist strictly on dead organic matter in soil and water and are unable to adapt to the body of ? host
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Obligate
live |
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When a saprobe does infect a host it considered a ? parasite. Such an infection usually occurs when the host is ? and then the microbe is considered an ? pathogen
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facultative
compromised opportunistic |
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An exoenzyme that breaks apart starch into maltose is ?
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Amylase
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Parasites are also known as ?
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pathogens
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? -parasites live on the body
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Ecto
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?- parasites live in organs and tissues
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Endo
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? parasites live within cells
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Intracellular
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? parasites are unable to grow outside of a living host
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obligate
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