bio-, bi-, -bia, -bial, -bian, -bion, -biont, -bius, -biosis, -bium, -biotic, -biotical

1. The study of the biological underpinnings of language; such as, the factors that enhance or retard language development and the neurophysiology of language disorders.
2. The study of language functions as related to or derived from biological characteristics of an organism.

The technique of introducing DNA into a cell by firing minute DNA-coated particles (for example, of gold) into the cell using a device powered by pressurized helium (the ballistic gun or “gene gun”).

Any rock or group of minerals formed from organic material or by the action of organisms.

1. A rock of organic origin.
2. A rock that is formed from or by organic material, either by noncombustible, inorganic processes that form an acaustobiolith, or by combustible, organic processes that form a caustobiolith (a combustible organic rock).

Any limestone of an organic nature such as a reef rock or stromatolite.

1. Referring to biology.
2. Pertaining to the products and operations of applied biology.
3. Any virus, therapeutic serum, toxin, antitoxin, or analogous product of plant or animal origins used in the prevention, diagnosis, or treatment of disease; for example, vaccines, and blood plasma products.

1. Pertaining to living organisms or life processes.
2. A reference to the products and operations of applied biology.
3. Any substance, as a serum or vaccine, derived from animal products or other biological sources and used to treat or to prevent disease.

The collections within living organisms of toxic substances occurring in the encircled areas.

See "bioanthropology" for the applicable definition for this biological anthropologyentry.

Any child conceived rather than adopted by a specified parent, and therefore, carrying genes from the parent.

1. An internal time-measuring mechanism which helps to adjust an organism's daily activities, seasonal activities, or both in response to environmental cues.
2. The internal mechanism of an organism that regulates circadian rhythms (daily cycles of activities) observed in many living organisms and various other periodic cycles.

The mechanism of the biological clock has long proved elusive; however, a molecular basis for such a clock in the fruit fly Drosophila has been discovered, and similar mechanisms may well apply in other organisms.

It is based on the cyclical rise and fall in the concentrations of certain proteins which form part of a negative feedback loop that controls transcription of their own genes.

All of the organisms inhabiting a given area.

The use of natural predators or parasites, instead of chemicals, to control pests.

The most famous successful example was the introduction of the gray moth, Cactoblastis cactorum, into Australia to control the prickly pear, Opuntia inermis, which was over running vast tracts of land. The moth's caterpillars eat the shoots of the plant.

Another example is the introduction of parasitic wasps that lay their eggs inside the eggs of pest insects; such as, corn borers that attack corn (maize).

Populations of insect pests may also be reduced by releasing sterile males to mate with the females, or by using sex-attractant chemicals (pheromones) to trap males or females.

The amount of radiation absorbed in biological material: The scientist developed a way to measure the biological dose of the radiation treatment of the lump on the patient’s foot.