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cold in Biological Definition

Warm-blooded

... versus cold-blooded 3 In between cold and warm blooded 4 See also 5 External ... allowing these animals to be active in cold temperatures. On the other hand, the ... as fish and reptiles are called ectothermic or cold blooded , meaning that they cannot control their ...

James D. Watson

... Watson currently serves as chancellor of the cold Spring Harbor Laboratory in cold Spring Harbor, New York . Watson resides on the ... External links James D. Watson, Ph.D. - cold Spring Harbor Laboratory ...

Thermoregulation

... - heat escapes from your body when you sit on a cold rock. convection - cooler air currents remove ... from solar radiation (e.g. snakes "sunning" on a cold day). Types of thermoregulation There are ... anaesthetized with ether and is placed in a cold chamber, its temperature gradually falls, and ...

Leaf

... . After the leaf is shed, a leaf scar develops on the twig. In cold autumns they sometimes turn yellow , bright orange or red as various ... carotenoids and anthocyanins ) are revealed when the tree responds to cold and reduced sunlight by curtailing chlorophyll production. Veins ...

Marine biology

... of species within a given area. They can be incredibly diverse. Even cold water reefs. Tropical reefs are known best though, and exist in most ... vents in the ocean floor act as oases for life, as do their opposites, cold seeps . These places support unique biomes and many new microbes have ...

Virus

... diseases Examples of diseases caused by viruses include the common cold , which is caused by any one of a variety of related viruses; smallpox ; AIDS , which is caused by HIV ; and cold sores, which are caused by herpes simplex . Recently it has been shown ...

Absorption spectrum

... emitted by a material. Let us consider white light, which consists of electromagnetic radiation at all frequencies, passing through a sample of cold gas. For any collection of atoms or molecules , there are certain specific amounts of energy required to change state; for individual atoms, ...

Antibiotic

... The problem of antibiotic resistance is worsened when antibiotics are used to treat disorders in which they have no efficacy, such as the common cold or other viral complaints, and when they are used widely as prophylaxis rather than treatment (as in, for example, animal feeds), because this ...

Antibody

... viruses "hide" inside cells for long periods of time to avoid them. This is the reason for the chronic nature of many minor skin diseases (such as cold sores ); any given outbreak is quickly suppressed by the immune system, but the infection is never truly eradicated because some cells retain viruses ...

Archaea

... extremophiles . Some live at very high temperatures, often above 100°C, as found in geysers and black smokers . Others are found in very cold habitats or in highly saline , acidic , or alkaline water. However, other archaeans are mesophiles , and have been found in environments like ...

Eugenics

... marrying. In 1898, Charles B. Davenport , a prominent American biologist , assumed the role of director of a biological research station based in cold Spring Harbor . Here he began experimenting with evolution of plants and animals. In 1904, Davenport received funds from the Carnegie Institution ...

Microorganism

... ... BBC News, 10 July, 2000, Snow microbes found at South Pole Citat: ... to survive the large doses of ultraviolet radiation, extreme cold and ... microbes have DNA sequences similar to a category of bacteria known as ... BBCNews: 16 January, 2002, Tough bugs ...

Nutrition

... may need high levels of protein and energy to enable high performance and repair for the high stresses on their body. People working hard in a cold environment may need high fat levels in their diets, to help maintain normal body temperature. This beneficial high fat level may be very harmful for ...

Red Queen

... by considering the contrast between two adaptations of the polar bear . This animal has a coat of hair which is thick to help the bear survive the cold of the arctic and white in order that the bear can stalk seals for food. For the first case the selection pressure is likely to be constant or ...
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