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38 Cards in this Set

  • Front
  • Back
The main inorganic source of phosphorus is ?
Phosphate(PO4,3-)
Phosphorus is found in ? and ? mineral deposits
rocks
oceanic
Phosphorus is a ? nutrient
essential
Where is phosphorus found in living organisms?
Phospholipid bilayer,DNA,RNA,ATP
? is an important nutrient involved in protein synthesis and membrane function
Potassium(K)
? is an important nutrient involved in certain types of cell transport
Sodium(Na)
? acts as a stabilizer of cell walls and endospores
Calcium(Ca)
? is a component of chlorophyll and stabilizer of membranes and ribosomes
Magnesium(Mg-)
? is an important component of cytochrome proteins that participated in the ETC
Iron(Fe)
? is an essential regulatory element for eukaryotic genetics, and binding factors for enzymes, it controls what genes are turned on and off
Zinc(Zn)
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 ?
synthesized
growth factor
An amino acid that cannot be synthesized by a cell and must be obtained from a food source is a ? amino acid
essential
All bacteria are subdivided by their energy source as ? or ?
phototrophs
chemotrophs
Microbes that gain energy from chemical compounds are called ?
Chemotrophs
Microbes that photosynthesize are called ?
phototrophs
? are photosynthetic, they capture the energy of light rays and transform it into chemical energy that can be used in cell metabolism
Photoautotrophs
Because photosynthetic organisms such as ?,?,and? produce organic molecules that can be used by themselves and heterotrophs, they form the basis for most ? webs
algae, plant, some bacteria

food
There are two type of Chemoautotrophs ? and ?
chemoorganic autotrophs
lithoautotrophs
? use organic compounds for energy and inorganic compounds as a carbon source
chemoorganic autotrophs
? 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
lithoautotrophs
electrons
synthetic
? produce methane from H2 and CO2(4H2+CO2>CH4+H2O).
Methanogens
CH4 is ?
methane
Methanogens are from the Domain ? and some live in ? habitats
Archae
extreme
The majority of heterotrophic microorganisms are ?-heterotrophs that derive both carbon and energy from ? compounds
chemo-
organic
Chemoheterotrophs process organic molecules by ? or ? which release energy in the form of ?
respiration
fermentation
ATP
Chemoheterotrophs are broken into two categories ? and ?
saprobes
parasites
? are free living microorganism that feed primarily on organic detritus from dead organisms
Saprobes
? ordinarily derive nutrients from the cells of tissues of a host
parasites
Most saprobes, notably ? and ?, have a ? cell wall and cannot engulf large particles of food.
bacteria
fungi
rigid
Saprobes release ? to the external environment which digest food particles into smaller molecules that can be transported across their rigid cell wall
exoenzymes
? saprobes exist strictly on dead organic matter in soil and water and are unable to adapt to the body of ? host
Obligate
live
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
facultative
compromised
opportunistic
An exoenzyme that breaks apart starch into maltose is ?
Amylase
Parasites are also known as ?
pathogens
? -parasites live on the body
Ecto
?- parasites live in organs and tissues
Endo
? parasites live within cells
Intracellular
? parasites are unable to grow outside of a living host
obligate