10 résultats pour "missing"
- Missing Link - Biologie.
- MISSING (PORTÉ DISPARU)
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Chromosome.
chromosome breaks off and attaches to another chromosome. A translocation involving chromosomes 9 and 22 is linked to a type of leukemia called chronic myelogenicleukemia. On the sex chromosomes, problems arise in men when an abnormal gene is present on the X chromosome. With no healthy gene found on the Y chromosometo override the abnormal gene, disease may result. For example, men who inherit a mutated gene that causes hemophilia from their mother on the X chromosome willdevelop this bleeding...
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Intelligence.
education. Teachers had no way of knowing which of the “slow” students had true learning problems and which simply had behavioral problems or poor prior education.In 1904 the French Ministry of Public Instruction asked Binet and others to develop a method to objectively identify children who would have difficulty with formaleducation. Objectivity was important so that conclusions about a child’s potential for learning would not be influenced by any biases of the examiner. The governmenthoped tha...
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Entretien avec Jack Lemmon - anthologie du cinéma.
The Cineaste : Les comédies ne doivent pas forcément se limiter au divertissement, non ? Est-il possible d’après vous d’affirmer des points de vue à travers la comédie ? Jack Lemmon : Oui, et je suis d’avis que l’on peut et que l’on devrait utiliser la comédie à cette fin le plus souvent possible. Curieusement, les gens se souviendront plus facilement d’une démonstration véhiculée par la comédie que d’une démonstration véhiculée par la tragédie. Je crois aussi, et c’est particulièrement vrai...
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"'Well, what can you say about that?
names belonged toresidents ofthe Sixth Borough, andwere carved whenCentral Parkstillresided there,instead ofin Manhattan. Somepeople believe theyaremade-up namesand,totake thedoubt astep further, thatthegestures oflove were made-up gestures. Othersbelieve otherthings." "Whatdoyou believe?" "Well, it'shard foranyone, eventhemost pessimistic ofpessimists, tospend morethanafew minutes inCentral Park without feelingthatheorshe isexperiencing sometense inaddition tothe present, right?""I guess. " "Ma...
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Frog (animal).
which means that their body temperature depends on the temperature of the surrounding environment. Few species can tolerate temperatures below 4°C (40°F) orabove 40°C (104°F), and many species can survive only within a narrower range of temperatures. In addition, frogs’ thin, moist skin offers little protection againstwater loss, and when on land the animals must guard against drying out. Many frogs are active at night because temperatures are cooler and humidity is higher thanduring the day. In...
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Frog (animal) - biology.
which means that their body temperature depends on the temperature of the surrounding environment. Few species can tolerate temperatures below 4°C (40°F) orabove 40°C (104°F), and many species can survive only within a narrower range of temperatures. In addition, frogs’ thin, moist skin offers little protection againstwater loss, and when on land the animals must guard against drying out. Many frogs are active at night because temperatures are cooler and humidity is higher thanduring the day. In...
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Molecule - chemistry.
attracted to the negatively charged electrons between them. The electrons belong to the molecule as a whole. However, each hydrogen atom now has a complete outershell of two electrons. The formula H 2 describes a hydrogen molecule, a discrete unit. When a molecule contains just two atoms, such as the hydrogen molecule does, it is called a diatomic molecule. Some atoms can form covalent bonds with more than one other atom and thus create a larger molecule. Atoms form molecules with covalent bo...
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Genetics - biology.
construct identical buildings. Just as each contractor would require a full copy of the blueprint to construct a complete building, each new cell needs a complete copy ofan organism’s genetic information to function properly. Organisms use two types of cell division to ensure that DNA is passed down from cell to cell during reproduction. Simple one-celled organisms and other organisms thatreproduce asexually—that is, without the joining of cells from two different organisms—reproduce by a proces...