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- Brain (22060 bytes)
9: .... The brains of arthropods and cephalopods arise from twin parallel nerve cords that extend through t...
11: The brains of craniates develop from the anterior section of a single dorsal [[neura...
18: ...eadly disease among [[cattle]] and is linked to [[prion]]s.
20: ...ers are [[congenital]]. [[Tay-Sachs disease]], [[Fragile X syndrome]], [[Down syndrome]], and [[Toure...
38: ...derstand the nervous system, including the brain, from a biological perspective. [[Psychology]] seeks... - Food (24212 bytes)
1: [[Image:Foods.jpg|thumbnail|right|Food from plant sources]]
23: ...epare food prior to eating since their divergence from [[Homo erectus]], possibly even earlier.
28: ...o eat meals together with other family members or friends and this is seen as an important social occa...
39: ...ce on mechanised tools which have been developed, from the [[threshing machine]], [[seed drill]], thro...
49: ===From [[plant]]s=== - Bovine spongiform encephalopathy (16156 bytes)
1: {{Taxobox_begin | color = violet | name = ''BSE prion''}}
3: {{Taxobox_norank_entry | taxon = [[Prion]]}}
4: ...{Taxobox_norank_entry | taxon = [[Prion|Mammalian prion]]}}
5: {{Taxobox_norank_entry | taxon = '''''BSE prion'''''}}
11: ...ctious state which then goes on to deform further prion protein in an exponential cascade. These aggregat... - Evolution (27661 bytes)
1: [[Image:Charles Darwin.jpg|right|frame|[[Charles Darwin]], father of the theory of ev...
3: ...e in the frequency of [[allele]]s in a population from one generation to the next.
6: ...dern synthesis, "evolution" means a change in the frequency of an [[allele]] within a [[gene pool]]. T...
14: # The [[common descent]] of all [[organism]]s from a single ancestor.
18: ...] is a model of the world (or some portion of it) from which [[falsifiability|falsifiable]] [[hypothes... - Biology (23579 bytes)
4: '''Biology''' is the [[science]] of [[life]] (from the [[Greek language|Greek]] words ''bios'' = l...
19: ...>Biology studies the variety of life ''(clockwise from top-left)'' ''[[E. coli]]'', tree [[fern]], [[g...
38: ... tells the characteristics of the various species from which it descended—together with its gene...
57: :[[virus (biology)|Viruses]] -- [[Viroid]]s -- [[Prion]]s
62: ...existing [[organism]]s on [[Earth]] are descended from a common ancestor or ancestral [[gene pool]]. ... - Virus (17572 bytes)
7: The original word comes from the [[Latin]] ''virus'' referring to [[poison]]...
14: Viruses form when molecules are assembled from [[organic compound]]s providing complex, micros...
26: ...sid may be enclosed in a lipid envelope, although frequently spherical viruses are not enveloped, and ...
29: ...sis]], the process whereby cells take in material from the external environment. After entering the ce...
43: #Lysis: Assembled viruses are released from the cell and can now infect other cells, and th... - Protein (17280 bytes)
16: ...tructure]]'': the shape or structure that results from the union of more than one protein molecule, us...
24: ...erminus]] (N-terminus) based on the nature of the free group on each extremity.
41: ...ove their [[substrate_(biochemistry)|substrates]] from place to place but do not change them; [[recept...
43: ...several proteins showing their comparative sizes. From left to right are: Immunoglobulin (IgG), Hemogl...
71: - Livestock (24677 bytes)
19: ..., such as wool, cheese, hides, and meat, produced from sheep moved along the road. Sheep manure was al...
26: ... primary source of animal [[protein]]. Livestock frequently eat [[forage]] and [[fodder|other food so...
27: ...ed dairying countries the number of products made from milk range in the 20 to 30 types. Using lives...
28: ...ax | wax]]''' : Bees collect [[pollen]] and honey from plants and process them into products that are ...
29: ... stock-feed and fertilizer (see [[scrapie]] and [[prion]]). Larvae make silk that is woven into fabric. - Life (11665 bytes)
22: ... their disparate nature makes them unsatisfactory from a number of perspectives; in fact, it is not di...
24: ...d then discount [[fungus|fungi]], and [[grass]]es from being alive).
41: *[[Francisco Varela]] and [[Humberto Maturana]]'s defin...
43: ...ized auto-cannibalizing system naturally emerging from conditions common on planetary bodies, and cons...
52: ...[[genetics]]. In all known life forms (assuming [[prion]]s are not counted as such), the genetic material... - Organism (3272 bytes)
3: ...oplast]]s, are generally considered to be derived from [[endosymbiotic theory|endosymbiotic]] bacteria...
46: ... but it appears most likely that they are derived from their hosts.
49: ...f most organisms, bacterium, a virus or even a [[prion]].
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