أكاديميا - كولنز معاجم الجيب العلمية - البيولوجيا انكليزي - فرنسي - عربي الحرف ٦_ c

Academia - Collins Scientific Pocket Dictionaries - Biology
English - French - Arabic letter 6_ C


competition
concurrence f

Compete. Demanding memberships of the same type (intraspecific competition) or memberships of different types (competition between two types) for a shared resource, such as food or light, that is limited in supply within a single community. Competition often leads to the elimination of one organism over another or even to the elimination of an entire species, as happens when two species of paramecium compete for food.

Numbers of memberships
Type A
Type B
Time


compound
Compose m

compound . A chemical substance formed by combining elements with atoms that exist in a fixed ratio. The basic unit of the compound is the molecule, the formation of which requires a chemical reaction. Mixtures, unlike compounds, have variable proportions of constituent atoms and can be separated by physical means.


conditioned reflex
Reflex my condition

Conditional reflex. A response to a stimulus that the animal has learned as a result of its association with the stimulus, which may be neutral with respect to a specific effect related to the learned response. For example: A rat may learn to press a lever when it feels hungry as a result of learning to associate the movement of the lever with the presentation of food to it. See sensitivity.


cone
cône m

cone . 1 - A reproductive structure in gymnosperms, such as pine, for example.
2 - A light-sensitive nerve cell found in the retina in the eyes of most vertebrates.
Due to their sensitivity to bright light, these cells
You can distinguish colors. See eye.


connective tissue
tissu m conjunctif

Connective tissue. Tissue is a support and packing tissue in vertebrates, consisting mainly of collagen fibers containing more complex structures, such as blood vessels, nerve fibres, etc.


contractile vacuole
Vacuole f contractile

Shrink gap. A small sac (or sacs) in the cytoplasm of freshwater protista, whose function is osmoregulation, that is, the gap expands in response to the entry of water by osmosis as a result of its filling, then it shrinks into empty contracts.
Its contents are outside the cell.

Amoeba
Shrink gap
Para mesium
Contractile gaps