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Acquired in Biological Definition

Alga

... development, although they all appear to have acquired photosynthesis from cyanobacteria . All algae ... only have three membranes because they were acquired through myzocytosis rather than phagocytosis . ... among the group, some members presumably having acquired theirs from other sources. The Apicomplexa , a ...

Jean-Baptiste Lamarck

... theory of heredity , the " inheritance of acquired traits ", but Charles Darwin and others ... new individuals which arise, provided that the acquired modifications are common to both sexes, or at ... the time. On the other hand, the inheritance of acquired characteristics is now widely refuted. August ...

Alga

... development, although they all appear to have acquired photosynthesis from cyanobacteria . All algae ... only have three membranes because they were acquired through myzocytosis rather than phagocytosis . ... among the group, some members presumably having acquired theirs from other sources. The Apicomplexa , a ...

Charles Darwin

... theories of Lamarck and Charles' grandfather Erasmus about evolution by acquired characteristics. He joined Grant in pioneering investigations of the life ... from variants thrown up by "chance" so that "every part of newly acquired structure is fully practised and perfected" , thinking this "the most ...

Immune system

... Adaptive immune system The adaptive immune system, also called the acquired immune system, ensures that most mammals that survive an initial infection ... by an attenuated response. There are congenital (inborn) and acquired forms of immune deficiency. Chronic granulomatous disease , in which ...

Kidney

... and disorders 3.1 Congenital diseases of the kidneys 3.2 acquired diseases of the kidneys 4 Dialysis and kidney transplants ... of urinary tract horseshoe kidney duplicated ureter acquired diseases of the kidneys Kidney stones are a relatively common and ...

Apoptosis

... –and very effective– front-line players in the body's defenses against infectious agents, as well as against local cells that have acquired or developed a malignancy. In order to carry out their job, B and T cells must have the ability to discriminate "self" from "nonself", and "healthy" ...

Bacterium

... (the transfer of DNA from one bacterial cell to another via a special protein structure called a conjugation pilus ). Bacteria, having acquired DNA from any of these events, can then undergo fission and pass the recombined genome to new progeny cells. Many bacteria harbor plasmids that ...

Blood

... legends Vampires are fictional beings thought to cheat death by drinking the blood of the living. Porphyrias , a group of inherited or acquired disorders , may have been the source of vampire legends. See also Artificial blood List of human blood components Blood as food ...

Culture

... its wide ethnographic sense, is that complex whole which includes knowledge, belief, art, morals, law, custom, and any other capabilities and habits acquired by man as a member of society" while a 2002 document from the United Nations agency UNESCO states that culture is the "set of distinctive ...

Bacterium

... (the transfer of DNA from one bacterial cell to another via a special protein structure called a conjugation pilus ). Bacteria, having acquired DNA from any of these events, can then undergo fission and pass the recombined genome to new progeny cells. Many bacteria harbor plasmids that ...

Ernst Haeckel

... of recapitulation has been disproven. Haeckel did not support Darwin's " survival of the fittest ", rather believing in a Lamarckian inheritance of acquired characteristics. On top of picking several wrong concepts to champion, he was actually caught using doctored data in some of his papers. Most ...

Genomics

... many genes) in two distantly related organisms, but not in other members of one of the clades, has led to the theory that these sequences were acquired by horizontal gene transfer . This phenomenon is most prominent in thermophilic bacteria, where it seems that genes were transferred from Archaea ...

Immunology

... including their function and interaction, is the central science of immunology. The immune system has been divided into innate immune system , and acquired or adaptive immune system , the latter of which is further divided into humoral and cellular components . The mainstay of classical immunology ...

Louis Pasteur

... a long time for smallpox . Inoculation with smallpox was known to result in far less scarring and greatly reduced mortality than with the naturally acquired disease. Edward Jenner had also discovered vaccination , using cowpox to give cross-immunity to smallpox, and by Pasteur's time this had ...

Modern evolutionary synthesis

... to refer to the theory of evolution preferred by Alfred Russel Wallace et al . Wallace rejected the Lamarckian idea of inheritance of acquired characteristics, something that Darwin, Huxley et al wouldn't rule out. The mechanism of inheritance wasn't discovered in Darwin or Wallace's ...

Magnetic resonance imaging

... the application of the transverse energy pulse; the transverse relaxation time is termed "Time 2" or T2 . Both T1- and T2-weighted images are acquired for most medical examinations. Often, a paramagnetic contrast agent, a gadolinium compound, is administered, and both pre-contrast T1-weighted ...

Nutrition

... are what you eat!" More specifically, in humans, the matter which comprises the cells of the body (except those cells produced before birth ) is acquired from food in the digestive system . Not all the food matter in the stomach can be used for the body; the matter that is left over as waste is ...

Proprioception

... not able to move properly at all. Later she relearned by using her sight (watching her feet) and vestibulum (or inner ear ) only. She eventually acquired a stiff and slow movement, which is believed to be the best possible in the absence of this sense. Impairment Apparently, temporary loss or ...

Species

... changes. As such, the new emphasis was on determining how a species could change over time. Lamarck suggested that an organism could pass on an acquired trait to its offspring, i.e., the giraffe 's long neck was attributed to generations of giraffes stretching to reach the leaves of higher treetops ...

Virus

... length. This complex of protein and nucleic acid is called the nucleocapsid, and, in the case of measles virus, is enclosed in a lipid 'envelope' acquired from the host cell, in which are embedded virus-encoded glycoproteins. These are responsible for binding to and entering the host-cell at the start ...
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