Sucrose: Plants in in vitro culture conditions need an exogenous carbohydrate source because most of the plants grown in vitro tend to shift from autotroph to heterotroph
. Selecting the best carbohydrate source and concentration in culture media depends on the plant species and the micropropagation phase.
A generalist species is able to thrive in a wide variety of environmental conditions and can make use of a variety of different resources (e.g., a heterotroph
with a varied diet).
The use of carbon and nitrogen stable isotopes offers a more efficient alternative to investigate trophic relationships between plants and animals in aquatic ecosystems, permitting direct identification of the relative contributions from different autotrophic energy sources to heterotroph
food chains (PETERSON; FRY, 1987).
(17) No minimum standards are offered by the EPA with regard to heterotroph
Table 3-1 The Five Kingdom System Kingdom Cellular Nutrition Type Examples Organization Monera * Prokaryotic * Varies Bacteria * Unicellular Fungi * Eukaryotic * Heterotroph
Molds, yeasts, * Unicellular or (cannot make mushrooms, multicellular its own food) smuts, rusts * Absorptive Protista * Eukaryotic * Heterotroph
Protozoa * Unicellular (a few autotrophic species exist) Animalia * Eukaryotic * Heterotroph
Invertebrates, * Multicellular * Ingestive vertebrates Plantae * Eukaryotic * Autotroph Plants, mosses, * Multicellular (can make its ferns own food) Table 3-2 Classification of the House Cat, Human, and E.
(1997) measured significant levels of heterotroph
activity and C[O.sub.2] and [N.sub.2]O production in snow-covered soils at Niwot Ridge.
"Their hypothesis, in my view, suffers from the weakness that it requires a huge changeover in the metabolism of the host from an autotroph [which makes ATP from nonorganic fuel] to a heterotroph
[which generates energy from organic molecules]," he says.
Just as there are important economic differences between an autotroph and a heterotroph
, so, too, there are important economic differences between an organism that can think and one that cannot.
Like us, Rpom is a heterotroph
that eats organic molecules to survive.
Cells of the strain VA1 grow optimally at 90 to 95C and pH 7.0 in atmospheric air as an obligate heterotroph
. The complete genome sequence of P.
When comparing the total growth of aerobic heterotroph
colonies in samples with different oxidizing agents, a statistically significant difference (p <0.05) between the oxidizing agents was also determined.