Yolk in the context of "Fish egg"

Tempera (Italian: [ˈtɛmpera]) is a permanent, fast-drying painting medium consisting of pigments mixed with a water-soluble binder medium, usually glutinous material such as egg yolk. There are several types of tempera paint, but the one containing egg yolk is called egg tempera. Tempera paint made from the milk protein is Casein paint. If the binder is synthetic PVA, the result is polyvinyl acetate tempera. A distemper paint consisting of pigment and binders such as cornstarch, gum arabic and other gums is called poster paint in certain parts of the world, and it is also often confusingly referred to as "tempera paint", although the binders in this paint are different from traditional egg tempera paints and the visual effect is more like gouache.

The term Tempera also refers to the paintings done in any kind of these tempera mediums.

The common stingray (Dasyatis pastinaca) is a species of stingray in the family Dasyatidae, found in the northeastern Atlantic Ocean and the Mediterranean and Black Seas. It typically inhabits sandy or muddy habitats in coastal waters shallower than 60 m (200 ft), often burying itself in sediment. Usually measuring 45 cm (18 in) across, the common stingray has a diamond-shaped pectoral fin disc slightly wider than long, and a whip-like tail with upper and lower fin folds. It can be identified by its plain coloration and mostly smooth skin, except for a row of tubercles along the midline of the back in the largest individuals.

The predominant prey of the common stingray are bottom-dwelling crustaceans, though it also takes molluscs, polychaete worms, and small bony fishes. It is aplacental viviparous: the embryos are nourished by yolk and later histotroph ("uterine milk") produced by the mother. Females bear 4–9 young twice per year in shallow water, after a gestation period of four months. The common stingray can inflict a painful, though rarely life-threatening, wound with its venomous tail spine. During classical antiquity, its sting was ascribed many mythical properties. This species is not sought after by commercial fisheries, but is taken in large numbers as bycatch and utilized for food, fishmeal, and liver oil. Its population is apparently dwindling across its range, and the International Union for Conservation of Nature (IUCN) assesses it as Vulnerable.

In embryology, cleavage is the division of cells in the early development of the embryo, following fertilization. The zygotes of many species undergo rapid cell cycles with no significant overall growth, producing a cluster of cells the same size as the original zygote. The different cells derived from cleavage are called blastomeres and form a compact mass called the morula. Cleavage ends with the formation of the blastula, or of the blastocyst in mammals.

Depending mostly on the concentration of yolk in the egg, the cleavage can be holoblastic (total or complete cleavage) or meroblastic (partial or incomplete cleavage). The pole of the egg with the highest concentration of yolk is referred to as the vegetal pole while the opposite is referred to as the animal pole.

Matrotrophy is a form of maternal care during organism development, associated with live birth (viviparity), in which the embryo of an animal or flowering plant is supplied with additional nutrition from the mother (e.g. through a placenta). This can be contrasted with lecithotrophy, in which the only source of nutrition for the embryo is yolk originally contained within its egg.

A mooncake (simplified Chinese: 月饼; traditional Chinese: 月餅) is a Chinese bakery product traditionally eaten during the Mid-Autumn Festival (中秋節). The festival is primarily about the harvest while a legend connects it to moon watching, and mooncakes are regarded as a delicacy. Mooncakes are offered between friends or on family gatherings while celebrating the festival. The Mid-Autumn Festival is widely regarded as one of the four most important Chinese festivals.

There are numerous varieties of mooncakes consumed within China and outside of China in overseas Chinese communities. The Cantonese mooncake is the most famous variety. A traditional Cantonese mooncake is a round pastry, measuring about 10 cm (4 in) in diameter and 3–4 cm (1+1⁄4–1+1⁄2 in) thick, with a rich, thick filling usually made from lotus seed paste (other typical fillings include red bean paste or mixed nuts) surrounded by a thin, 2–3 mm (approximately 1/8 of an inch) crust and may contain yolks from salted duck eggs.

Egg white is the clear liquid (also called the albumen or the glair/glaire) contained within an egg. In chickens, it is formed from the layers of secretions of the anterior section of the hen's oviduct during the passage of the egg. It forms around fertilized or unfertilized egg yolks. The primary natural purpose of egg white is to protect the yolk and provide additional nutrition for the growth of the embryo (when fertilized).Egg white consists primarily of about 90% water into which about 10% proteins (including albumins, mucoproteins, and globulins) are dissolved. Unlike the yolk, which is high in lipids (fats), egg white contains almost no fat, and carbohydrate content is less than 1%. Egg whites contain about 56% of the protein in the egg. Egg white has many uses in food (e.g. meringue, mousse) as well as many other uses (e.g. in the preparation of vaccines such as those for influenza).

Scrambled eggs is a culinary dish made from eggs (usually chicken eggs), where the whites and yolks have been stirred, whipped, or beaten together (typically with the addition of other ingredients), then heated so that the proteins denature and coagulate, and they form into "curds".