620 



Ind 



ex 



Hemoglobin, 289-292, 333-334. 528 

 Hemoprotein, 320 

 Hill reaction, 373 

 Histidine, 277 



Hodgkin-Huxley equations, 453-456 

 functional form of parameters, 454 

 Hormone, 70—71 

 Hue, 120 



Hydrogen bonding, 287, 293-294 

 Hydrolase, 318 

 Hydroxyproline, 277 

 Hyperopic, 39 



I 



Image distortion, 65 

 Impedance: 



electrical, 73, 207, 608-609 

 of biological cells, 208-210 

 of biological tissues, 210—213 

 definition, 207 



ultrasonic : 



characteristic, 213 

 Index of refraction, 29, 595 

 Inductance, 74, 608 

 Induction period, 250 

 Inferior colliculus, 115 

 Information, 462 

 Information theory, 460—476 



average information per amino acid, 472 



average information per message, 465 



general discussion, 461 



genetic code, 474—475 



hearing, 467—469 



noise, 464, 468 



protein structure, 471—473 



redundancy in English, 466—467 



redundancy and polyploidy, 467 



role of languages, 460—461 



sensory perception, 467—471 



vision, 469-471 

 Infrared: 



wavelengths, 482 

 Inhibitor: 



competitive, 328-330 



non-competitive, 329—331 

 Instrumentation, 479—588 



Insulator, 607 



Insulin, 274, 310 



Intensity, 8, 10, 33 

 Interfacial tension, 236 

 Interference, 31 



Intermediate complex, 321—322 

 Interneuron, 90 

 Interphase, 189-190 

 Invertase, 309, 321, 380 

 I "i, 565-566 

 Iodopsin, 124, 357-358 

 Ionizing radiation, 185-203, 299-314, 

 610-613 



background radioactivity, 200-201 



as a biological tool, 185-187 



cellular events produced by, 185—203 



critical volume (also called sensitive 

 volume), 195, 199, 306 



Ionizing radiation (Cont.) 



dried protein film bombardment, 



307-310 

 elimination of small molecules, 303 

 enhancement of effects by oxygen, 195, 



303 

 free radical formation, 196 

 genetic effects, 196—201 

 G value, 312-313 

 indirect effects, 304, 311-313 

 molecular action, 299—314 

 protective agents, 196 

 visible cellular effects, 190-196 

 water, radicals formed by, 311 



Iris, 36, 95, 180 



Isocyanopsin, 358 



Isoiodopsin, 358 



Isoleucine, 275 



Isomerase, 319 



Isometric, 141 



Isomorphic replacement, 286 



Isoporphyropsin, 358 



Isorhodopsin, 358 



Isotonic, 141 



Isotope, 557 



j-j coupling, 518—519 

 Junction: 



neuromuscular, 84—87 



K 



Kinetic energy, 159 

 King crab, 45, 129 

 K M , 325 

 Krebs' cycle, 150, 346 



Lactic acid, 150-151 

 Lambert's law, 485, 487 

 Lande g factor, 530 

 Laplacian equation, 173 

 Lateral lemniscus, 115 

 Lateral line organs, 180 

 Laue pattern, 282 

 Legendre polynomial, 239 

 Lens, 29-30, 600-604 



crystalline, 36-38, 41, 49-50 



electromagnetic, 553 



electrostatic, 553 



strength of, 30 



thick, 30, 602-604 



thin, 601-602 

 Lenz's law, 528 

 Leucine, 275 

 Light: 



electromagnetic wave aspect, 31—33 



and the eye, 27—51 



photons as, 33—34 



quantum aspect, 33—34 

 Light-adapted, 46-48 

 Light chopper, 498 

 Limulus, 45, 129, 131, 181 



plexus, 131 



