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Nutrition, Metabolism, and Temperature Regulation We are often more concerned with the taste of food than with its nutritional value when choosing from a menu or when selecting food to prepare. Knowing about nutrition is important, however, because food provides us with energy and the building blocks necessary to synthesize new molecules. What happens if we don't obtain enough vitamins, or if we eat too much sugar and fats? Health claims about foods and food supplements bombard us every day. Which ones are ridiculous, and which ones have merit? This chapter explains nutrition (p. 932), metabolism (p. 940), carbohydrate metabolism (p. 942), lipid metabolism (p. 949), protein metabolism (p. 950), interconversion of nutrientmolecules (p. 952), metabolic states (p. 953), metabolic rate (p. 955), and body temperature regulation (p. 956).

GENÉTICA MOLECULAR Puedes consultar en el siguiente enlace las orientaciones sobre la asignatura para este curso Biología 09-10 Los Niveles de Organización de los seres vivos. Los Niveles Ecológicos Tutoriales: Átomos, iones y la tabla periódica Tipos de enlaces. Importancia de la estructura en las moléculas Los glúcidos, lípidos, prótidos y Ac. El agua, composición, estructura y propiedades Animaciones: Difusión de un soluto ¿Por qué se disuelven las sales? Ciclación de la glucosa al disolverse Las macromoléculas biológicas: glúcidos, lípidos, prótidos y ac. nucleicos, su composición y estructura. Estructura del ADN y desespiralización del ADN Ósmosis Sustancias buffer o tampón Las enzimas : Qué son las enzimas, enzimas alostéricas y tipos de inhibidores. Enzimas1 y Enzimas 2 : Interesante el apartado sobre modelos de unión enzima-sustrato. Mecanismo de la actividad enzimática Al índice Tutorial: Estructura celular Ejercicios: Componentes de la célula animal (elegir "Ejecutar" cuando pregunten que desea hacer con el archivo)

Inquiry into Biology <hr><p><b>You must have javascript enabled to view this website. Please change your browser preferences to enable javascript, and reload this page.</b></p><hr> Inquiry into Biology Robert Constantin, Writer/EducatorHelen Colbourne, Forest Lawn High SchoolDarcy Dobell, Professional Writer/EducatorClaudia Fehres, William Aberhart High SchoolDeborah MacFadyen, Jack James High SchoolGeorge Thomson, Crescent Heights High SchoolAdrienne Mason, Professional WriterAlexandra Venter, Professional Writer Welcome to the Student Centre for Inquiry Into Biology. Now Available: Unit PreparationUnit PreQuizzes Web LinksAnimations and Virtual Lab ExercisesIllustrations from the Student Edition Please navigate through the content by choosing an option from the Navigation bar on the left.

Interactive Animal and Plant Cells Nucleolus: The prominent structure in the nucleus is the nucleolus. The nucleolus produces ribosomes, which move out of the nucleus and take positions on the rough endoplasmic reticulum where they are critical in protein synthesis. Cytosol: The cytosol is the "soup" within which all the other cell organelles reside and where most of the cellular metabolism occurs. Though mostly water, the cytosol is full of proteins that control cell metabolism including signal transduction pathways, glycolysis, intracellular receptors, and transcription factors. Cytoplasm: This is a collective term for the cytosol plus the organelles suspended within the cytosol. Centrosome: The centrosome, or MICROTUBULE ORGANIZING CENTER (MTOC), is an area in the cell where microtubules are produced. During animal cell division, the centrioles replicate (make new copies) and the centrosome divides. Centriole (animal cells only): Each centriole is a ring of nine groups of fused microtubules.

Nedeljnik Vreme The vascular system. The movement of blood through the vessels – Visual TA The system of arteries. Le système des artères. El sistema de las arterias. Das System von Arterien. Anatomy and regulation of blood vessels. Diagram of arteries, veins, and capillaries. Structure aorta: 1. Cross-section through a human artery of the elastic type: 1. Anatomy of the arterial wall. The structure of the vein. Scheme venous valve. Video of the venous valves in action. Capillaries – the vessels of blood microcirculation. Like this: Like Loading... Spanish Animations Spanish Animations Copyright ©2007 McGraw-Hill Higher EducationAny use is subject to the Terms of Use and Privacy Policy.McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.

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