light-sensitive cell
91hormone — hormonal, hormonic /hawr mon ik, moh nik/, adj. /hawr mohn/, n. 1. Biochem. any of various internally secreted compounds, as insulin or thyroxine, formed in endocrine glands, that affect the functions of specifically receptive organs or tissues… …
92Magnetoception — (or magnetoreception) is the ability to detect a magnetic field to perceive direction, altitude or location. This sense plays a role in the navigational abilities of several animal species and has been postulated as a method for animals to… …
93Period (gene) — period serina Identifiers Organism D. melanogaster Symbol per Entrez …
94Retinal — chembox new ImageFile = Retinal structure.png ImageSize = IUPACName = OtherNames = Formula = C20H28O PubChem = 1070 SMILES = MolarMass= 284.436 Appearance = CASNo = 116 31 4 Density= MeltingPt= 63 °C BoilingPt= Solubility = MainHazards = FlashPt …
95Retina — The retina is the nerve layer that lines the back of the eye, senses light, and creates impulses that travel through the optic nerve to the brain. There is a small area, called the macula, in the retina that contains special light sensitive cells …
96Photoelectric effect — The photoelectric effect is a quantum electronic phenomenon in which electrons are emitted from matter after the absorption of energy from electromagnetic radiation such as x rays or visible light.cite book | title = Physics for Scientists… …
97Ocellus — An ocellus (plural: ocelli) is a type of photoreceptor organ in animals. Also called simple eyes , ocelli are miniature eyes capable of sensing light but not distinguishing its direction. See also stemmata, which are structurally similar. Ocelli… …
98Optic disc — Interior of posterior half of bulb of left eye. The veins are darker in appearance than the arteries …
99Jellyfish — For other uses, see Jellyfish (disambiguation). Jellyfish Temporal range: 505–0 Ma …
100Silver nitrate — Silver nitrate …
