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Day in Biological Definition

Nutrition

... to eat a greater variety of different foods every day than Westerners (27 different foods a day whereas the recommended minimum in the West is 30 ... - Covers the nutritional value of common day food stuff Department of Agriculture's Food ...

Thermoregulation

... adaptations like living in burrows during the day and being nocturnal evaporative cooling by ... fairly constant. In strong, healthy infants a day or two old the temperature rises slightly, but in ... and is not dependent on the incidence of day and night; in monkeys which are active during the ...

Crassulacean acid metabolism

... and change it into crassulacean acid that can be broken down during the day for sugars. These plants can close their stomata during the day. These plants close their stomata (tiny pores used for gas exchange) during the day in order to conserve water. Normally, they wouldn't be able to carry out ...

Crassulacean acid metabolism

... and change it into crassulacean acid that can be broken down during the day for sugars. These plants can close their stomata during the day. These plants close their stomata (tiny pores used for gas exchange) during the day in order to conserve water. Normally, they wouldn't be able to carry out ...

Charles Darwin

... "geologising" in Scotland, spending 28 June visiting Edinburgh on the day that Queen Victoria had her coronation in London. At Glen Roy in ... symptoms which frequently limited his working time to a few minutes a day or forced him to stop working and recuperate. First writings on ...

Alfred Russel Wallace

... distinct evolutionary views which divirged from Darwin's, and was considered by many (especially Darwin) to be a chief thinker on evolution in his day whose ideas could not be ignored. He is among the most cited naturalists in Darwin's Descent of Man , often in strong disagreement. ...

Apoptosis

... Antonio Damasio have suggested homeodynamics as a more accurate and eloquent term ( Damasio 1999 , p. 141). From 50 to 70 billion cells die each day due to apoptosis in the average human adult. In a year, this amounts to the proliferation and subsequent destruction of a mass of cells equal to an ...

Culture

... United States, as of December 12, 2004. UNESCO, " UNESCO Universal Declaration on Cultural Diversity ", issued on International Mother Language day , February 21 , 2002. External links Dictionary of the History of Ideas : "Cultural Development" in Antiquity Dictionary of the ...

Diffusion

... by the thermal movement of individual molecules. Some examples of diffusion are: A balloon filled with helium will deflate a little bit every day because helium atoms diffuse out of the balloon through its wall. When spaghetti is cooked, water molecules diffuse into the spaghetti strings, ...

Escherichia coli

... used as a model organism for bacteria in general. The number of individual E. coli bacteria in the feces that one human passes in one day averages 10 11 (= one with eleven zeroes after it) to 10 13 . All the different kinds of fecal coli bacteria and all the very similar bacteria ...

Edward Jenner

... . The term virus was introduced in the work aforementioned. Jenner realised the long-term implications of vaccination, and looked forward to the day when smallpox would no longer be a threat anywhere on earth; his dream eventually reached fruition with the global eradication of smallpox in the ...

Homunculus

... the shell, replace a bean-sized portion of the white with human sperm, seal the opening with virgin parchment, and bury the egg in dung on the first day of the March lunar cycle. A miniature humanoid would emerge from the egg after thirty days, which would help and protect its creator in return for a ...

Human

... only up to around 14 days without water. (See also famine , malnutrition ). The average sleep requirement is between seven and eight hours a day for an adult and nine to ten hours for a child. Elderly people usually sleep for six to seven hours. It is common, however, in modern societies for ...

Ichthyology

... Pieter von Bleeker - East Indies Marcus Elieser Bloch George Albert Boulenger Edward Drinker Cope Georges Cuvier Francis day - India Bashford Dean Carl H. Eigenmann Samuel Garman Charles Henry Gilbert Theodore Nicholas Gill Charles Girard ...

Insulin

... the extract was so impure that he suffered a severe allergic reaction and further injections were cancelled. Over the next 12 days Collip worked day and night to improve the extract, and a second dose injected on the 23rd. This was completely successful, not only in not having obvious ...

Kidney

... blood plasma without blood cells and large-molecule proteins. Small proteins may be present. A person's blood pass through the kidneys 350 times a day at the rate of 1.2 litres per minute, producing 125cc of glomerular filtrate per minute. Measuring the glomerular filtration rate is a diagnostic ...

Neural tube

... molecules produced in the notochord and basal plate . Neural tube defects Normally the closure of the neural tube occurs around the 30th day after fertilization . However, if something interferes and the tube fails to close properly, a neural tube defect will occur. Among the most ...

Stem cell

... are undifferentiated cells that reproduce daily to provide certain specialized cells—for example 200 billion red blood cells are created each day in the body from hemopoietic stem cells . Until recently it was thought that each of these cells could produce just one particular type of ...

Yellow fever

... disease outbreaks in rural or forest areas and in towns. Disease outbreaks in towns and non-native people are usually more serious. After a 3 to 6 day incubation period the typical symptoms that arise are fever, muscle aches, headache and backache. Other symptoms may include a red tongue, flushed ...
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