https://padlet.com/jusbelita/z722qomamkgt Los alumnos del profesorado de Biología de 1ero B, realizaron cultivos de bacterias, en el laboratorio, a través de un preparado con agar-agar, agua, glucosa; obteniendo muestras de diferentes ambietes u objetos, con el fin de desarrollar grupos bacterianos en los cultivos. en-us 2017-05-27 05:26:40 UTC 2025-09-28 16:18:53 UTC hello@padlet.com jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067327 2017-05-27 06:01:21 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067327 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067340 2017-05-27 06:01:57 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067340 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067352 2017-05-27 06:02:26 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067352 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067370 2017-05-27 06:02:43 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067370 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067379 2017-05-27 06:03:02 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067379 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067386 2017-05-27 06:03:21 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067386 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067395 2017-05-27 06:03:41 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067395 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067400 2017-05-27 06:04:00 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067400 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067402 2017-05-27 06:04:19 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067402 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067406 2017-05-27 06:04:39 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067406 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067409 2017-05-27 06:04:56 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067409 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067418 2017-05-27 06:05:20 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067418 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067422 2017-05-27 06:05:40 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067422 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067464 2017-05-27 06:08:35 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067464 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067659 Los elementos utilizados:
3 cajas de Petri esterilizadas cn tapa
Agar-agar
50 grs de Glucosa
Un mechero Bunsen
Un trípode
Una placa disipadora
Una varilla de vidrio
Un vaso de precipitado
Hisopos estériles
Etiquetas
Guante térmico]]> 2017-05-27 06:15:51 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067659 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067682 2017-05-27 06:17:00 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067682 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067705 2017-05-27 06:18:05 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067705 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067729 2017-05-27 06:18:58 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067729 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067747 2017-05-27 06:19:41 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067747 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067766 2017-05-27 06:20:25 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067766 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067831 2017-05-27 06:22:54 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067831 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067847 2017-05-27 06:23:36 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067847 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067868 Foto versión NEGATIVO de una Muestra de Cultivo por Microscopio]]> 2017-05-27 06:24:11 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067868 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174067929 2017-05-27 06:26:19 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174067929 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174068094 2017-05-27 06:33:10 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174068094 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174068239 Preparado del medio de cultivo:
* Etiquetamos cada una de las caja de Petri, con las letras A, B, C, respectivamente.
* Calentamos 100ml de agua hasta alcanzar punto de ebullici´n (burbujas) y retiramos.
* Agregamos al paso anterior 100ml de agua fría; 2,5 grs de Agar-agar; 7,5 grs de glucosa, y con la varilla de vidrio movimos o se revolvio hasta hacer una sustancia homógenea.
*  Se lleno el 40% con esto las cajas de Petri (A;B;C)
* Tapamos inmediatamente hasta enfriar y solidificar  lapreparación.
* Tomamos los hisopos uno para cada muestra y frotamos en nuestros objetos de muestra 
A: papelera
B: boca
C: tapa de celular
en cada uno de los preparados previamente etiquetados.
* Tapamos, y fuimos registrando por fotos sus cambio.
* En la siguiente clase observamos cada cultivo en la LUPA y después en el MICROSCOPIO comenzado con el objetivo de campo 4x]]> 2017-05-27 06:39:00 UTC https://padlet.com/jusbelita/z722qomamkgt/wish/174068239 jusbelita https://padlet.com/jusbelita/z722qomamkgt/wish/174068679 Características: Un microorganismo se puede sembrar en un medio líquido o en la superficie de un medio sólido de agar. Los medios de cultivo contienen distintos nutrientes que van, desde azúcares simples hasta sustancias complejas como la sangre o el extracto de caldo de carne. Para aislar o purificar una especie bacteriana a partir de una muestra formada por muchos tipos de bacterias, se siembra en un medio de cultivo sólido donde las células que se multiplican no cambian de localización; tras muchos ciclos reproductivos, cada bacteria individual genera por escisión binaria una colonia macroscópica compuesta por decenas de millones de células similares a la original. Si esta colonia individual se siembra a su vez en un nuevo medio crecerá como cultivo puro de un solo tipo de bacteria.

La principal diferencia entre un medio de cultivo sólido y uno líquido es que el medio de cultivo sólido contiene un 1,5–2% de agar-agar, mientras que el medio líquido no contiene agar-agar.

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