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- Eye (21834 bytes)
1: ... organs are found in a variety of creatures. The simplest eyes do nothing but detect whether the surround...
11: ...among the [[arthropod]]s and are composed of many simple facets which give a pixelated image (not multiple...
15: Some of the simplest eyes, called [[ocelli]], can be found in animal...
16: Jumping spiders have simple eyes that are so large, supported by an array of ...
71: ...polar cell, enough [[neurotransmitter|transmitter molecule]]s reach the [[synapse]] of the bipolar cell to a... - Chemistry (12553 bytes)
5: ... how atoms interact to form [[molecules]] and how molecules interact with each other.
47: ...rmines chemical properties. For example, [[water (molecule)|water]] is a compound containing [[hydrogen]] an...
49: === Molecules ===
52: ...t retains a set of unique chemical properties. A molecule consists of two or more [[atom]]s [[Chemical bond...
57: ...sics)|Ion]] is a charged species, or an atom or a molecule that has lost or gained an electron. Positively c... - History of science (41710 bytes)
29: ...omical information in a systematic manner through simple observation. Though they had no knowledge of the...
93: ...cid]]s, could themselves be built up from simpler molecules in a [[simulation]] of primordial [[process]]es ...
117: ...uced the occurrency of [[puerperal fever]] by the simple experiment of requiring physicians to wash their ... - Cell (biology) (28190 bytes)
15: ...extract and use chemical energy stored in organic molecules. This energy is derived from [[metabolic pathway...
27: ...karyote|Prokaryotic]]''''' cells are structurally simple. They are found only in single-celled and [[Colo...
34: ...ry machinery. There are also other kinds of [[biomolecule]]s in cells. This article will list these primar...
39: ... that act as channels and pumps, moving different molecules into and out of the cell.
56: ...enetic material is divided into different, linear molecules called [[chromosome]]s inside a discrete nucleus... - DNA (29095 bytes)
1: ...ght|125px|Space-filling model of a section of DNA molecule]]
3: ...y [[virus]]es). DNA is often referred to as the [[molecule]] of [[heredity]], as it is responsible for the g...
5: In [[bacterium|bacteria]] and other [[prokaryote|simple]] [[biological cell|cell]] organisms, DNA is not ...
12: :Wikipedia needs to be accurate, but it can be simple ''and'' accurate. Dumbing down something too muc...
22: This section presents a brief and simple overview of DNA. - Albert Einstein (43065 bytes)
16: ...red a slow learner, possibly due to [[dyslexia]], simple [[shyness]], or the significantly rare and unusua...
126: ... cycle used [[ammonia]], [[butane]], and [[water (molecule)|water]]. - Molecular nanotechnology (10344 bytes)
3: ...edictable way), we must work with randomly moving molecules. As a result, when we cause a particular chemica...
15: ...erials designed to respond differently to various molecules; such a capability could lead, for example, to a...
17: ... in some fundamental, intentional way. As a very simple example: a photosensor could passively measure th...
35: ...in which a cloud of networked microscopic robots (simpler than [[Molecular assembler|assembler]]s) changes... - Platypus (21900 bytes)
41: Outside the mating season, platypuses live in simple burrows in the ground. After mating, though, the ...
44: ...mmalian species, it may contain [[peptide]]s or [[molecule]]s whose principal effects are non-life threateni... - Cell (29541 bytes)
15: ...extract and use chemical energy stored in organic molecules. This energy is derived from [[metabolic pathway...
27: ...karyote|Prokaryotic]]''''' cells are structurally simple. They are found only in single-celled and [[Colo...
34: ...ry machinery. There are also other kinds of [[biomolecule]]s in cells. This article will list these primar...
39: ... that act as channels and pumps, moving different molecules into and out of the cell.
56: ...enetic material is divided into different, linear molecules called [[chromosome]]s inside a discrete nucleus... - Iris (anatomy) (11258 bytes)
10: ...gment called [[melanin]]. Structurally, this huge molecule is only slightly different from its equivalent fo...
17: ...selective absorption and reflection by biological molecules (hæ¯globin in the blood vessels, collagen in th...
25: ...is colour than pigmentation. Overall, there is no simple [[Mendelian inheritance]] in iris colour. Consequ... - Virus (17572 bytes)
12: ...iruses. Many viruses have similarities to complex molecules. Like DNA, viruses undergo molecular [[replicati...
14: Viruses form when molecules are assembled from [[organic compound]]s providi...
19: ...r]] and [[cellular biology]] because they provide simple systems that can be used to manipulate and invest...
35: ...the virus's genetic information is contained in a molecule of DNA rather than RNA. The viral DNA can then be...
53: Other infectious particles which are even simpler in structure than viruses include [[viroid]]s, [... - Hydrogen (20221 bytes)
110: ...] [[natural gas]]. [[Electrolysis]] of water is a simple method, but it is still economically inefficient ...
113: ... those found at the center of [[gas giant]]s, the molecules lose their identity and the hydrogen becomes a l...
167: [[molecule]]s which differ from one another by the - Aluminium (26079 bytes)
158: ...uble in water, forming hydrates with at least six molecules of [[water of crystallization]].
166: ...be made from the elements. It consists of a giant molecule which sublimes without melting at 1291 ?C. It is ...
167: ...mula AlR<sub>3</sub> exist and, if not also giant molecules, are at least [[dimer]]s or trimers. They have s... - Sulfur (18059 bytes)
50: ...ily exists as a cyclic crown-shaped S<sub>8</sub> molecules. Sulfur has many [[allotropy|allotrope]]s beside...
104: * [[Sulfide]]s are simple compounds of sulfur with some other chemical elem...
110: * A [[thioether]] is a molecule with the form R-S-R', where R and R' are organic ...
111: ... A [[thiol]] (also known as a [[mercaptan]]) is a molecule with an -SH functional group. These are the sulf...
113: * A [[sulfone]] is a molecule with an R-S(=O)-R' functional group where R and R... - Genetics (12654 bytes)
3: ...ence|chemical structure]] of particular [[DNA]] [[molecule]]s.
12: ... traits in pea plants and showed that they obeyed simple statistical rules. Although not all features show...
30: ...8]] [[Frederick Griffith]] discovers a hereditary molecule that is transmissible between bacteria (see [[Gri...
60: ...e structure and function of [[gene|genes]] at a [[Molecule | molecular]] level. Molecular genetics employs t...
63: ... take the view that [[life]] can be defined, in [[molecule|molecular]] terms, as the set of strategies which... - Chemical formula (5472 bytes)
1: ...ms of such element to be found in each discrete [[molecule]] of that compound. The number of atoms (if great...
6: For example [[methane]], a simple molecule consisting of one [[carbon]] atom bonded to four ...
16: ...er, this implies a different structure from other molecules that can be formed using the same atoms ([[isome...
25: ...(CH<sub>2</sub>)<sub>50</sub>CH<sub>3</sub>, is a molecule with 50 repeating units. If the number of repeati...
28: ...or Cu<sup>2+</sup>. The total charge on a charged molecule or a [[polyatomic ion]] may also be shown in this... - Chemical bond (3955 bytes)
1: ... phenomenon of [[atom]]s being held together in [[molecule]]s or [[crystal]]s. All chemical bonds are due to...
15: ...[quantum mechanics]]) to help us understand these molecules.
23: ...ecular [[Intermolecular force|forces]] that cause molecules to be attracted or repulsed by each other. These... - Magnet (13875 bytes)
14: ...nge ordering of these spins ''between'' atoms and molecules. Without long range ordering, there is no net ma...
28: An [[electromagnet]], in its simplest form, is a wire that has been coiled into one o...
109: ...of the magnets. However, a formula exists for the simple case of the force between two magnetic poles:
130: * [[single-molecule magnet]] - History of chemistry (8174 bytes)
31: ...cid]]s, could themselves be built up from simpler molecules in a [[simulation]] of primordial [[process]]es ... - Energy (16265 bytes)
15: ...-metres, has the same dimension and this is not a simple coincidence: a torque of 1 newton-metre applied o...
41: In most simple physics models, this is assumed to be the same qu...
47: ...is related to the random motion of their atoms or molecules. This internal energy is directly proportional t...
132: ...nal]] and [[electric]] energy of [[atom]]s within molecules. [[Internal energy]], like energy, is a quantifi...
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