eBooks de Biología, página 19 de 130

Este texto persigue una comprensión del sistema microbio-medio que pueda servir de base para abordar cualquier otro aspecto del desarrollo microbiano, partiendo de unos conocimientos directamente comprobables que estructuran una teoria de los microbios en cultivo puro.Como puede verse siguiendo el indice de este libro, esta teoria comprenderia la cinetica del crecimiento de la biomasa microbiana, la generacion de productos en el medio y la intervencion de oxidantes y reductores presentes en el mismo incluyendo la utilizacion de los compuestos C1 y la utilizacion y produccion de energia radiante.

El contenido de esta obra explica de manera sencilla y ampliamente ilustrada, los distintos procesos bioquímicos que tienen lugar en los componentes celulares, así como sus interrelaciones.El lector encontrara los principios basicos necesarios para el estudio de las propiedades, funciones, sintesis y degradacion de carbohidratos, proteinas y lipidos, asi como las principales caracteristicas y aplicaciones clinicas de vitaminas, minerales y agua.La informacion se divide en tres grandes apartados: Termodinamica y bioenergetica; Propiedades de las biomoleculas y Procesos metabolicos celulares.En esta tercera edicion, se presenta un nuevo capitulo "Agua", en el que se analizan sus principales propiedades fisicas y quimicasSe incluye mas de 200 ilustraciones a lo largo de todo el texto y un mapa metabolico integral para el estudio de las distintas rutas bioquimicas.

Você já deve ter ouvido várias vezes que o melhor caminho para uma boa saúde é a alimentação natural, variada, rica em frutas e verduras. Mas nem sempre é fácil identificar quais são os benefícios re

El libro está dirigido sobre todo a profesionales sanitarios; las Escuelas de Enfermería lo encontrarán especialmente adecuado para sus cursos de Bioquímica y también será de utilidad para estudiantes de Medicina, e incluso medicos en ejercicio que deseen actualizar conocimientos. El diseo del libro permite estudiarlo a distintos niveles de profundidad. Las figuras añaden a menudo detalles no incluidos en el texto basico, y lo mismo ocurre con los problemas y practicas de laboratorio. Ademas, hay que tener en cuenta las secciones de complementos y aplicaciones clinicas.

Neste primeiro capítulo da coleção Bioquímica para Todos, mergulhamos no fascinante universo das biomoléculas — os tijolos invisíveis que constroem a vida. De forma acessível, criativa e interativa,

Desde su primera edición la contribución de este libro a la enseñanza de la bioquímica ha sido relevante, y ha tenido una influencia decisiva en la pedagogía de la asignatura, ofreciendo una escritura excepcionalmente clara, graficas innovadoras y la cobertura de las ultimas tecnicas y avances en investigacion. Estos rasgos siguen siendo el fundamento de esta edicion, que incorpora en sus paginas los ultimos descubrimientos que han cambiado nuestra forma de pensar sobre conceptos fundamentales de la bioquimica y la salud humana.Como aspectos a destacar de esta septima edicion, cabe señalar los siguientes: la integracion del metabolismo en el contexto de la dieta y la obesidad. Nuevos capitulos sobre regulacion de genes. Ampliacion y actualizacion de las tecnicas experimentales. Mas problemas propuestos. Nuevas herramientas para visualizar y comprender las estructuras moleculares. Incorporacion de un mayor numero de Aplicaciones clinicas, totalmente nuevas. Materiales de apoyo, dirigidos tanto a los alumnos como a los profesores que basen sus cursos de bioquimica en este manual.

Desde su primera edición la contribución de este libro a la enseñanza de la bioquímica ha sido relevante, y ha tenido una influencia decisiva en la pedagogía de la asignatura, ofreciendo una escritura excepcionalmente clara, graficas innovadoras y la cobertura de las ultimas tecnicas y avances en investigacion. Estos rasgos siguen siendo el fundamento de esta edicion, que incorpora en sus paginas los ultimos descubrimientos que han cambiado nuestra forma de pensar sobre conceptos fundamentales de la bioquimica y la salud humana.Como aspectos a destacar de esta septima edicion, cabe señalar los siguientes: la integracion del metabolismo en el contexto de la dieta y la obesidad. Nuevos capitulos sobre regulacion de genes. Ampliacion y actualizacion de las tecnicas experimentales. Mas problemas propuestos. Nuevas herramientas para visualizar y comprender las estructuras moleculares. Incorporacion de un mayor numero de Aplicaciones clinicas, totalmente nuevas. Materiales de apoyo, dirigidos tanto a los alumnos como a los profesores que basen sus cursos de bioquimica en este manual.

Ideado a partir del texto clásico de bioquímica de Lubert Stryer, John Tymoczko y Jeremy Berg, Bioquímica: Curso básico se centra en los principales temas que se enseñan en un curso semestral de bioquimica.Con sus capitulos resumidos y ejemplos relevantes, este texto muestra la bioquimica como una parte de la vida cotidiana de los estudiantes e interdependiente con los demas campos del conocimiento cientifico, de modo que los contenidos resulten mas faciles de comprender y ayuden al lector a enriquecer su conocimiento del mundo.

El objetivo de este libro es ordenar los principios y conceptos básicos de la Bioquímica para presentarlos en una estructura clara que muestre al lector el camino hacia el fascinante cosmos de las biomoleculas y lo guie en los temas mas importantes. Con ello se pretende llenar el vacio existente entre las pesadas Biblias de la bioquimica y los breves "Libros de lectura elementales para la preparacion de examenes. Siguiendo una organizacion logica, la obra se ha desglosado en cinco grandes partes. La primera de ellas, la arquitectura molecular de la vida, es una breve vision de la bioquimica y la biologia celular que se desarrollara en las cuatro partes restantes: Estructura y funcion de las proteinas, Almacenamiento y expresion de la informacion genetica, transduccion de señal en membranas biologicas y Conversion de energia y biosintesis. El ser humano, y con el los mamiferos, son los principales organismos que se utilizan como ejemplo en el desarrollo de los temas, Si con ello se despierta el interes del lector por la bioquimica, ¡el objetivo esencial de este libro se habra conseguido!

O presente livro, que versa sobre o tema de metabolismo, foi cuidadosamente produzido como fruto de diversos anos de trabalho dos autores. Ele corresponde a uma compilaço do material por eles utilizado na disciplina de bioquimica ministrada na graduaço dos cursos de ciencias biologicas e da saude da Universidade do Estado do Para e na Universidade Federal do Para. E fato que a disciplina de bioquimica e metabolismo humano causa "medo" em muitos alunos, pois apresenta conteudos densos e complexos no primeiro momento. Porem, e evidente que quando os discentes passam a entender o metabolismo, o conteudo torna-se prazeroso e facilitador da compreenso de outras disciplinas. Com a intenço de oferecer aos estudantes uma alternativa de texto base para o estudo do metabolismo, optamos por redigir este livro com substancial reduço na linguagem tecnica, sem perder de vista que o simples no significa ser simplorio. Assim, a combinaço dos textos com as ilustraçes (produzidas em boa parte no proprio editor de texto Microsoft Office Word 97-2003) tem a finalidade de reduzir a aridez dos textos similares. Esperamos que esta obra possa contribuir para a desmisticaço das principais vias metabolicas das celulas humanas e que os estudantes e prossionais que utilizarem nosso livro em seus estudos, solicitamos que nos indiquem os erros e as diculdades encontradas no uso do mesmo, para que possamos cada vez mais aperfeiçoar a didatica e manter disponivel um texto util e ecaz para o aprendizado de to importante disciplina.

La biotecnología es una ciencia aplicada que utiliza organismos vivos y sus procesos bioquímicos con la finalidad de obtener, crear o modificar productos para usos específicos. Esta tecnología ha crecido y evolucionado hasta tal punto durante los ultimos años que el numero de profesionales que trabajan en las distintas areas relacionadas directamente con ella es cada vez mayor.Este libro, dirigido a profesionales y a estudiantes del ambito de las Ciencias de la Vida (Genetica, Inmunologia, Microbiologia, Bioquimica, Agronomia, Ciencia de los Alimentos, etc.) es una emocionante y colorida vision general de la biotecnologia. Por ello tambien es un manual util y entretenido para aquellos lectores que, aun sin tener una solida base cientifica, se sientan atraidos por esta interesante rama de la ciencia.Aqui encontraran los aspectos mas importantes sobre este tema. Biotecnologia para principiantes cubre todos los aspectos principales de la disciplina, desde la biotecnologia de alimentos, las enzimas, la ingeniaria genetica, los virus, los anticuerpos y vacunas, hasta la biotecnologia ambiental, los animales transgenicos, la biotecnologia analitica y el genoma humano. Pero, ademas, el autor plantea las oportunidades y los riesgos de determinadas tecnologias, que ilustra con referencias historicas, y destaca los temas clave que es necesario tener en cuenta. Este estimulante libro es de facil lectura y comprension a pesar de la amplitud y complejidad de este campo.

In "Bird Day; How to Prepare for It," Charles Almanzo Babcock crafts a delightful and informative guide that dives into the rich traditions of celebrating Bird Day, a day dedicated to appreciating avian life. With an engaging literary style that combines elements of nature writing and practical advice, Babcock not only informs readers about the ecological significance of birds but also provides detailed instructions for preparing engaging activities and events to commemorate this special day. The book is set against the backdrop of early 20th-century America, a time when the conservation movement was gaining momentum, thus reflecting the growing public interest in environmental awareness and bird protection. Charles Almanzo Babcock, a noted figure in the field of education and naturalist pursuits, was deeply influenced by the burgeoning environmental consciousness of his time. His background in pedagogy and his passion for ornithology shine through in this work, illustrating his commitment to educating the public about the natural world and fostering a sense of stewardship for it. Babcocks efforts in promoting Bird Day exemplify his belief in the importance of connecting children and families with nature. Readers who seek to enrich their understanding of avian life and explore unique, engaging ways to celebrate it will find "Bird Day; How to Prepare for It" an invaluable resource. Whether educators, parents, or nature enthusiasts, this book offers practical insights and a sense of joy that resonates with anyone keen to deepen their connection with the natural world.

This book is called "Bird Portraits" because Mr. Seton-Thompsons pictures are always faithful and charming portraits of the birds which he draws. But since a birds portrait, no matter how accurate, can show its subject in only one position, singing, feeding, flying, or sitting, a short account of some of the main events of the birds life has been added to each picture.Any one who learns from such books as Mr. Seton-Thompsons how beset with perils is the life of every wild creature will take the greatest pains at all times, and especially in the nesting season, not only not to injure or persecute such defenseless little creatures as our song birds, but also to protect them in every way. Whoever seeks their acquaintance, in the spirit of friendship, will always be grateful for the interest and pleasure to be gained from such friends.Of the twenty birds whose portraits are here presented, a majority are only summer residents in the Northern States; some visit us only in winter; a few spend the whole year near the same spot. The birds which are first described are those that are most closely associated with the return of spring; then follow those whose gay colors and bright songs give much of its charm to early summer; last come those that brave, even in the North, the tempests of winter.R. H.

In "Bird Stories from Burroughs," John Burroughs weaves a captivating tapestry of nature writing that intricately blends observational ecology with lyrical prose. This collection showcases Burroughs keen insight into the avian world, highlighting not only the behaviors and characteristics of various bird species but also their place within the fabric of the natural environment. Structured as a series of interconnected vignettes, each narrative is rich in detail, capturing the essence of each birds life through Burroughs distinctive, poignant voice that resonates with both scientific precision and poetic rhythm, allowing readers to see the natural world through the eyes of a devoted naturalist. John Burroughs, an influential American naturalist and essayist of the late 19th and early 20th centuries, is often recognized as a precursor to modern environmentalism. His deep-rooted connection to the natural world, cultivated during his formative years in rural New York, propelled him to advocate for the appreciation of nature. A contemporary of writers like Walt Whitman and John Muir, Burroughs synthesized personal experience with observation, illuminating the spiritual and philosophical implications of nature in his works. "Bird Stories from Burroughs" is not merely a book about birds but a reflection on the interconnectedness of life and the importance of mindfulness towards nature. For anyone seeking a deeper understanding of the avian world or yearning for an empathetic perspective on the natural environment, Burroughs eloquent prose invites readers to rediscover the beauty and complexity of the wilderness that surrounds them.

In "Bird Stories from Burroughs," John Burroughs artfully intertwines personal narrative with keen natural observation to deliver a series of vignettes that celebrate the beauty and complexity of avian life. Written in a lyrical prose that reflects both his reverence for nature and his philosophical musings, Burroughs invites readers into a world where birds are not merely subjects of study, but fellow inhabitants of the earth with whom we share a profound connection. The book is situated within the broader context of the 19th-century American nature writing movement, characterized by a growing awareness of the environment and a desire to observe and preserve the wilderness. John Burroughs, a prominent figure in American literature and a contemporary of notable naturalists such as John Muir and Ralph Waldo Emerson, was deeply influenced by the transcendentalist movement and his own experiences in nature. His lifelong passion for botany and ornithology, along with his role as an advocate for conservation, propelled him to document the intricacies of birds and their habitats. BurroughsAos reflective style is imbued with personal insights, suggesting an intricate bond between the observer and the observed, which speaks profoundly to the human condition. This enchanting collection is highly recommended for readers who seek to deepen their appreciation of nature and the avian world. Whether you are a seasoned birdwatcher, an aspiring nature enthusiast, or simply curious about the intricate lives of birds, BurroughsAos stories provide a captivating and thoughtful exploration that bridges the gap between humanity and the natural realm.

"A wonderful book that shares rare knowledge in a clear and focused way. I love it." - Tristan GooleyBird Tracks: A Field Guide to British Species explores and enhances the ability to identify a diversity of birds using just their tracks and trails. John Rhyder and David Wege approach this subject from the perspective of both the tracker and the birdwatcher. They have examined and described 139 species, each richly illustrated with a mixture of photographs and drawings of their unique tracks and trails.Bird Tracks is a comprehensive guide for trackers and birdwatchers interested in studying species found around the British Isles, and will also be of great use across northwestern Europe. Written by experts in their respective fields, this work represents several years of research collated into the most in-depth study of British bird tracks published to date.

Edmund Selouss "Bird Watching" presents a seminal exploration of avian observation that transcends mere hobbyist enthusiasm, instead offering a meditative and philosophical reflection on humanitys relationship with nature. Written in the early 20th century, Selous employs a lyrical and descriptive style, richly capturing the behaviors and habitats of birds while intertwining them with profound insights about the interconnectedness of life. This book stands as a pivotal work in the burgeoning field of nature writing, notable for its blend of personal narrative and scientific observation, providing an early blueprint for nature appreciation literature. Edmund Selous, a dedicated ornithologist and naturalist, was deeply influenced by the burgeoning appreciation for wildlife in his time, as well as by his own experiences in the English countryside. His career, which spanned both artistic pursuits and scientific inquiry, reflects a holistic view of nature not only as a subject of study but also as a source of inspiration and tranquility. Selouss passion for conservation and his commitment to understanding avian species emerged amid a rapidly industrializing world, reminding readers of the delicate balance between modernity and nature. "Bird Watching" is highly recommended for anyone seeking to deepen their appreciation for the avian world. Whether you are an avid bird watcher or a casual nature enthusiast, Selouss evocative prose and philosophical musings invite readers to form a more profound connection with the environment. This timeless work encourages exploration and reflection, serving as a reminder of the beauty and importance of the natural world.

In "Bird Watching," Edmund Selous offers a pioneering exploration of ornithology melded with lyrical prose, immersing readers in the intricacies of avian life. The book is structured not only as a field guide but also as a reflective journey through the natural world, emphasizing the importance of observation and patience. Selouss descriptive style and keen attention to detail capture the vibrant behaviors of various bird species, fostering a deep appreciation for the subtleties of nature while situating his observations within the broader context of early 20th-century environmental awareness. Edmund Selous, a noted naturalist and author, was deeply influenced by his childhood experiences in the English countryside. His passion for the natural world and particular fascination with birds stemmed from formative moments spent observing wildlife, laying the foundation for his innovative approach to this genre. Selous not only contributed to ornithology but carved a unique niche within nature writing, bridging the gap between scientific inquiry and poetic expression. "Bird Watching" is an essential read for enthusiasts of nature literature and anyone intrigued by the delicate balance between humanity and the natural environment. Selouss evocative prose not only educates but also inspires a profound connection to the world of birds, urging readers to cultivate their own powers of observation.In this enriched edition, we have carefully created added value for your reading experience:- Handpicked Memorable Quotes shine a spotlight on moments of literary brilliance.- Interactive footnotes clarify unusual references, historical allusions, and archaic phrases for an effortless, more informed read.