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An egg that can be laid on land due to the presence of a fluid-filled amniotic sac (amnion) that cushions and protects the developing embryo. amniote - n. Any of a group of land-dwelling vertebrates that have an amnion during embryonic development, including reptiles, birds, and mammals. Most extant mammals give live birth, the egg being retained inside the body during gestation.
Industry:Biology
2 протона ТэВ на анти протонного коллайдера, который работает в лаборатории Ферми в Батавии, штат Иллинойс. Топ-кварк был обнаружен с помощью этого ускорителя.
Industry:Physics
Калибровочный бозон с без электрического заряда. Он опосредует слабый нейтральный ток. Он был изучен в захватывающий подробно экспериментов на LEP и СТС.
Industry:Physics
Internal tubes through which air is taken for respiration. Vertebrates with lungs have a single trachea carrying air to the lungs, while insects and some other land-living arthropods have a complex network of tracheae carrying air from the spiracles to all parts of the body.
Industry:Biology
In insects, the second body region, between the head and thorax. It is the region where the legs and wings are attached.
Industry:Biology
A group of cells with a specific function in the body of an organism. Lung tissue, vascular tissues, and muscle tissue are all kinds of tissues found in some animals. Tissues are usually composed of nearly identical cells, and are often organized into larger units called organs.
Industry:Biology
In many animals, the body is divided into repeated subunits called segments, such as those in centipedes, insects, and annelids. Segmentation is the state of having or developing a body plan in this way.
Industry:Biology
Cellular outgrowths. These look like little bumps or fingers on the surface of cells.
Industry:Biology
The outermost layer of cells or skin. This tissue often contains specialized cells for defense, gas exchange, or secretion.
Industry:Biology
An animal with a notochord (a cartilaginous rod that extends the length of the body), dorsal hollow nerve cord (a fluid-filled tube that runs the length of the body), gill slits or pouches, and a tail at some stage in its life cycle.
Industry:Biology
