Biological terms dictionary

An electron donor in chemical reactions involving covalent catalysis in which the donated electrons bond with other chemical groups. The last acceptor of the electron, as it exits the electron transport chain. An often mutated substance which is implicated as one of the causing agents of cancer.

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This includes organisms that require molecular oxygen to survive aerobic organismsan environment that has molecular oxygen, and processes that happen only in the presence of oxygen aerobic respiration. Animals that can survive and live on land as well as in water.

Common examples are that of, plant parts like leaves, fruits, flowers, and bark being separated from the plant. A highly active and aggressive phagocytic macrophage, located on the epithelial lining of the lung alveoli, which ingests and destroys any inhaled particles and micro-organisms.

Biology Terms - Glossary of Biology Terms and Definitions

The study of micro-organisms, often with the aid of a microscope. The outer proteinaceous coat of a virus. The radiation is emitted by radioactive material within the object or tissue. A spherical structure found in fungi belonging biolotical the phylum Ascomycotawhich are associated with the simple pore in the septa separating the hyphal compartments.

Refers to a bird laying its eggs in the nest of another, with the purpose of making the host bird to hatch and raise its young.

The oxidation of ammonium to nitrite and nitrate by heterotrophic organisms. The process of determining the exact location of specific genes in a genome map. A system of fluid filled tubes and ducts, that connect with the tube feet of most marine invertebrates.

A hard outer covering of an organism made up of carapace and plastron. A toxin produced by Aspergillus flavus and Aspergillus parasiticuswhich contaminate groundnut seedlings. The combined nitrification action of two autotrophic organisms, one converting ammonium to nitrite and the other oxidizing nitrite to nitrate.

Unsaturated zone of soil which is above the groundwater, extending from the bottom of the capillary fringe to the soil surface. The process of laying eggs in the nest of other or own species not making one. A group of broad-spectrum, penicillinase-resistant antibiotics, derived from Cephalosporium. Close associations seen between two different organisms, that work mutually to benefit each other. This term refers to hatchlings that are capable of leaving the nest but are dependent on their parents for their feed.

It is a term used to refer to an animal that has been domesticated, but has escaped and returned to being wild, while still living in its current environment. Materials which are laid down on soil to protect it from rain, crusting, freezing etc. List of Human Races.

Complete List of Biology Terms | Biology Dictionary

Eukaryotic heterotrophic organisms that live as saprophytes or parasites. An organism that can harbor or nourish another organism.

An egg that is elongated and tapered towards its rounded ends. A technique for performing a plate count of micro-organisms. Grass or plant eating organisms are called herbivores. A basal medium allows the growth of many types of micro-organisms which do not require special nutrient supplements.

A stiff bristle like feather, which grows at the base of a bird's bill.

Search within my subject specializations: Toothed whales and toothless filter feeding whales are among those that belong to this catergory. A growing or actively feeding form of a cell, as against a spore. It is the process of nuclear division in biologixal cell, in which the total number of chromosomes is reduced to half.

Biology Dictionary - Definitions for biology students

Organisms that obtain their energy from the oxidation of inorganic chemicals and biologiacl carbon compounds. The taxonomic group of animals that includes coelomate, and elongated and segmented invertebrates such as leeches, earthworms, marine worms, etc.

An organism that feeds chiefly on insects.

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