Difference between revisions of "AY Honors/Microscopic Life/Answer Key/es"

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<!--{{Honor_Master|honor=Microscopic Life|master=Zoology|group=Fauna}}-->
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|honorname=Vida microscópica
 
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|skill=2
 
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|year=1994
 
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|category=Estudio de la naturaleza
 
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|authority=Asociación General
 
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|insignia=Microscopic_Life_Honor.png
 
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{{Honor_Master/es|honor=Vida Microscópica|master=Naturaleza|group=Fauna}}
 
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<!-- 2. Be able to identify the following parts of a microscope and explain or demonstrate the function of each: eye-piece or ocular, objective, body tube, nosepiece, stage, diaphragm, base, focus knob, and arm. -->
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[[Image:Mikroskop.png|frame|
 
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1. eye-piece or ocular<br>
 
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2. objective turret, or nosepiece<br>
 
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3. objective lenses<br>
 
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4. coarse adjustment knob<br>
 
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5. fine adjustment knob<br>
 
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6. object holder or stage<br>
 
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7. mirror<br>
 
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8. diaphragm and condenser
 
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]]
 
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;The eyepiece or ocular (1): The part of a microscope that a user looks into.  It contains a lens called the ''ocular''.
 
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;Objective (3): The objective is another lens.  It is located near the specimen to be observed.
 
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;Body Tube: This is a hollow tube that connects the ocular lens to the objective lens.
 
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;Nosepiece (2): The nosepiece is the part of the microscope that the objective lenses attach to.  Sometimes the nosepiece houses a prism whose function is to bend light from the image so that the user can sit comfortably instead of hunching over the microscope to look straight down on the specimen.
 
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;Stage (6): The stage is a platform where the slides are mounted. 
 
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;Diaphragm (8): The diaphragm is an apparatus located beneath the stage.  It focuses light onto the specimen.
 
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;Base: The base is the bottom of the microscope on which the rest of the instrument rests.
 
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;Focus knob (4 and 5): The focus knob (or knobs) adjust the distance between the ocular lens and the objective lens.  This brings the specimen into focus.  Microscopes often come with two focus knobs - a coarse focus and a fine focus.  The coarse focus knob makes large changes in the focus.  The fine focus know makes smaller adjustments.
 
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;Arm: The arm connects to the base and other parts of the microscope (such as the stage, diaphragm, and body tube) attach to it.
 
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The magnification of a compound microscope is simply the magnification of the ocular lens times the magnification of the objective lens:
 
  
 
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;slide: A slide is a small piece of rectangular glass upon which the specimen to be viewed is placed.
 
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;coverslip: The coverslip is a piece of glass the same shape as a slide (but often thinner) used to cover the specimen.  The specimen is sandwiched between the slide and the coverslip.
 
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;wetmount: Wetmounting is when the user smears a wet specimen onto a slide.
 
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;fixing: Fixing preserves a specimen so that it does not decompose.  Once a specimen has been fixed, it can be stored away and looked at again later.
 
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;staining: Staining colors the specimen so that it has a higher contrast and can be more easily seen under the microscope.
 
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;oil immersion: In order to get a sharp focus at magnifications above 400X, light must be coupled between the specimen and the objective by a layer of oil.  If the light travels through air it gets too distorted.
 
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;unicellular: A unicellular organism has only one cell. This includes bacteria, many algae, amoebae, and many other organisms that cannot be seen with the naked eye.
 
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;multicellular: A multicellular organism is made up of more than one cell. This includes animals, insects, plants, and most other life that can be seen around us on a daily basis.
 
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;cilia: Cilia are small hair-like appendages around the edge of a cell which allows the cell to propel itself through water. Cells in the human body have cilia. The cilia in the respiratory tract move mucus with particles trapped out of the air we breathe back up into the throat.
 
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;flagella: A flagella is a whip-like structure at the end of a cell that allows it to swim through the water. This is the way that sperm swim. Many bacteria also have flagella for swimming through their environment.
 
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;plankton: Plankton are any type unicellular marine organism at the bottom of the food chain.
 
  
 
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<!-- 5. Collect samples of water (from ponds, streams, ditches, gutters, puddles, etc.) And search for living organisms using a microscope with at least 100X magnification. Draw five of these organisms as accurately as possible. As far as possible, identify and label your diagrams (include the magnification used.) -->
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You will have better luck with this in the summer than in the winter, though it is not difficult to find microscopic life even in the winter.  Still water is more likely to harbor microscope life than swift water. Often scraping 'scum' off of rocks will yield an interesting specimen. If necessary, instruct your Pathfinders to harvest a piece of ice from a frozen puddle in the woods or in a ditch, and let it thaw out before coming to the meeting.  Aquariums and flower vases are good sources of water laden with microscopic life.  Another option is to seed some tap water and let it "marinate" for a week.  You can seed the water with hay, straw, grass, or even dirt from the floor.  Just don't get ''too'' gross!
 
  
 
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==Referencias==
 
==Referencias==
  
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Latest revision as of 00:47, 26 July 2022

Other languages:
English • ‎español • ‎français
Vida microscópica

Nivel de destreza

2

Año

1994

Version

06.07.2024

Autoridad de aprobación

Asociación General

Microscopic Life AY Honor.png
Vida microscópica
Estudio de la naturaleza
Nivel de destreza
123
Autoridad de aprobación
Asociación General
Año de introducción
1994
Vea también
Maestría de Salud y ciencia
Maestría de Zoología
Sangre y defensas del cuerpo


1

Hacer una lista de cuatro grandes clases de microscopios. ¿Cuáles son algunas de las características de cada uno? Ser capaz de identificar las diferentes clases de microscopios en imágenes o visitar a un laboratorio en una universidad o un industria que utiliza estos microscopios.



2

Ser capaz de identificar las siguientes partes de un microscopio y explicar o demostrar la función de cada uno: ocular, objetivo, cabezal, revolver, portaobjetos, condensador, base, enfoque, el brazo.




3

Saber cómo calcular el aumento de un microscopio compuesto. Calcular la magnificación del microscopio que utiliza para esta especialidad.



4

Definir los siguientes términos microscópicos: diapositiva. cubreobjetos, portaobjetos, fijar, coloración, aceite de inmersión, unicelular, multicelular, cilios, flagelos, plancton.



5

Recoger muestras de agua (de estanques, arroyos, zanjas, cunetas, charcos, etc.) y buscar organismo vivos usando un microscopio con un mínimo aumento de 100X. Dibujar cinco de estos organismos con la mayor precisión posible. En la medida de los posible, identificar y etiquetar sus diagramas (incluyendo el aumento utilizado).



6

Dibujar y etiquetar una célula que incluya las siguientes partes: membrana celular, núcleo y citoplasma.



7

Conocer los reinos que tienen formas de vida microscópicas y conocer a dos organismos de cada una de ellas.



8

Mencionar al menos un ejemplo de cómo la vida microscópica es importante para: la alimentación humana, la salud humana, la medicina y otros organismos.



9

Dar al menos tres hábitos saludables que se han establecido como resultado directo de la vida microscópica nociva. Poner estos hábitos en práctica.




Referencias

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