QUESTION IMAGE
Question
actividad 2
instrucciones: realiza la siguiente práctica.
- procedimiento:
a) primero, lava tus manos y utiliza guantes de látex.
b) toma un hisopo estéril y remuévelo en “raspado”* para tomar una muestra de piel del interior de la mejilla de tu compañero/a.
c) coloca la muestra teñida con el hisopo y extiéndetela en el portaobjetivo.
d) añade una gota de colorante para teñir los resultados que puedas observar.
e) coloca el cubreobjetivo sin romperlo y evita que se forme burbuja en la muestra.
f) coloca el portaobjetivo con la muestra para observarla al microscopio.
- ¿qué observas?
- ¿cómo identificaste las células en la muestra?
- ¿por qué solo se ven las células?
- ¿por qué no es posible ver todos los organelos?
- realiza las conclusiones de tus observaciones, captura fotografías o realiza un dibujo representativo, identifica en tus observaciones las estructuras celulares que puedas.
To solve this activity (which appears to be a practical exercise in observing a sample, likely biological, under a microscope), we follow the steps of the "Procedimiento" (Procedure) and answer the questions:
1. ¿Qué observas? (What do you observe?)
When observing a biological sample (e.g., plant or animal cells) under a microscope, typical observations include:
- Cellular structures: Cell walls (in plant cells), cell membranes, nuclei, cytoplasm, or organelles like chloroplasts (if it’s a plant sample).
- Organization: Cells may appear in groups, layers, or with distinct shapes (e.g., rectangular for plant cells, irregular for animal cells).
- Details: Color (if stained), size, and arrangement of cells.
2. ¿Cómo identificas las células en la muestra? (How do you identify cells in the sample?)
Cells are identified by:
- Structural features: Presence of a nucleus, cell wall (plant cells), or cell membrane (animal cells).
- Shape and boundaries: Distinct cell membranes or walls that separate individual cells.
- Staining (if used): Stains like iodine or methylene blue highlight cell components (e.g., nucleus), making cells easier to distinguish from background debris.
3. ¿Por qué solo vemos las células? (Why do we only see the cells?)
We only see cells because:
- Microscope magnification: The microscope (e.g., light microscope) magnifies the sample enough to visualize cells (typically 40x–1000x), while smaller structures (like molecules) are too tiny to see.
- Staining (if applied): Stains bind to cellular components, increasing contrast against the background, so cells stand out.
- Sample preparation: The sample (e.g., a thin slice of tissue) is prepared to be transparent and focused, ensuring cells are visible while non - cellular material is minimized or blurred.
4. ¿Por qué no es posible ver todos los organelos? (Why is it not possible to see all organelles?)
Not all organelles are visible because:
- Microscope limitations: Light microscopes have a resolution limit (≈200 nm), so small organelles like ribosomes (≈20 nm) or mitochondria (unless stained) may be too small to resolve.
- Staining specificity: Most stains target specific organelles (e.g., iodine for starch in chloroplasts, not all organelles).
- Sample type: Some organelles are only visible in specific cell types (e.g., chloroplasts in plant cells, not animal cells) or require special techniques (e.g., electron microscopy for detailed organelle structure).
2. Resulta anotaciones de tus observaciones... (Record your observations...)
Observations (example for a plant cell sample, e.g., onion epidermis):
- Cell shape: Rectangular, with distinct cell walls.
- Nucleus: Visible (stained, e.g., with iodine) as a dark - colored, round structure inside the cell.
- Cytoplasm: Fills the space between the nucleus and cell wall.
- Arrangement: Cells are tightly packed in a single layer.
Interpretation (example):
The sample shows plant cells (identified by cell walls and rectangular shape). The nucleus is visible due to staining, indicating active cellular processes (e.g., DNA storage). The tight packing suggests a protective or structural tissue (like epidermis).
Final Answers (Summarized for Each Question):
- ¿Qué observas?
Observo células con forma rectangular (si es planta), paredes celulares, un núcleo teñido de color oscuro y citoplasma. Las células están agrupadas en capas.
- ¿Cómo identificas las células en la muestra?
Identifico las células por sus paredes c…
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To solve this activity (which appears to be a practical exercise in observing a sample, likely biological, under a microscope), we follow the steps of the "Procedimiento" (Procedure) and answer the questions:
1. ¿Qué observas? (What do you observe?)
When observing a biological sample (e.g., plant or animal cells) under a microscope, typical observations include:
- Cellular structures: Cell walls (in plant cells), cell membranes, nuclei, cytoplasm, or organelles like chloroplasts (if it’s a plant sample).
- Organization: Cells may appear in groups, layers, or with distinct shapes (e.g., rectangular for plant cells, irregular for animal cells).
- Details: Color (if stained), size, and arrangement of cells.
2. ¿Cómo identificas las células en la muestra? (How do you identify cells in the sample?)
Cells are identified by:
- Structural features: Presence of a nucleus, cell wall (plant cells), or cell membrane (animal cells).
- Shape and boundaries: Distinct cell membranes or walls that separate individual cells.
- Staining (if used): Stains like iodine or methylene blue highlight cell components (e.g., nucleus), making cells easier to distinguish from background debris.
3. ¿Por qué solo vemos las células? (Why do we only see the cells?)
We only see cells because:
- Microscope magnification: The microscope (e.g., light microscope) magnifies the sample enough to visualize cells (typically 40x–1000x), while smaller structures (like molecules) are too tiny to see.
- Staining (if applied): Stains bind to cellular components, increasing contrast against the background, so cells stand out.
- Sample preparation: The sample (e.g., a thin slice of tissue) is prepared to be transparent and focused, ensuring cells are visible while non - cellular material is minimized or blurred.
4. ¿Por qué no es posible ver todos los organelos? (Why is it not possible to see all organelles?)
Not all organelles are visible because:
- Microscope limitations: Light microscopes have a resolution limit (≈200 nm), so small organelles like ribosomes (≈20 nm) or mitochondria (unless stained) may be too small to resolve.
- Staining specificity: Most stains target specific organelles (e.g., iodine for starch in chloroplasts, not all organelles).
- Sample type: Some organelles are only visible in specific cell types (e.g., chloroplasts in plant cells, not animal cells) or require special techniques (e.g., electron microscopy for detailed organelle structure).
2. Resulta anotaciones de tus observaciones... (Record your observations...)
Observations (example for a plant cell sample, e.g., onion epidermis):
- Cell shape: Rectangular, with distinct cell walls.
- Nucleus: Visible (stained, e.g., with iodine) as a dark - colored, round structure inside the cell.
- Cytoplasm: Fills the space between the nucleus and cell wall.
- Arrangement: Cells are tightly packed in a single layer.
Interpretation (example):
The sample shows plant cells (identified by cell walls and rectangular shape). The nucleus is visible due to staining, indicating active cellular processes (e.g., DNA storage). The tight packing suggests a protective or structural tissue (like epidermis).
Final Answers (Summarized for Each Question):
- ¿Qué observas?
Observo células con forma rectangular (si es planta), paredes celulares, un núcleo teñido de color oscuro y citoplasma. Las células están agrupadas en capas.
- ¿Cómo identificas las células en la muestra?
Identifico las células por sus paredes celulares (o membrana), la presencia de un núcleo teñido y su forma/distinción de la superficie de fondo.
- ¿Por qué solo vemos las células?
Solo vemos las células por la magnificación del microscopio, la tinción que resalta las estructuras celulares y la preparación de la muestra (fina[LLM SSE On Failure]