Animal and plant cells

 

 


 

Animal and plant cells

 

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Biology and genetics

 

Animal and plant cells

 

The microscope
Organisms (living things) are made up of cells. Cells differ in shape, size and function.

The microscope can be used to examine plant and animal cells.


image microscope

Component

Function

Eyepiece

Magnifies the image

Focus wheels

Focuses the  image

Objective lenses

Magnifies the  image

Stage

Supports the Slide

Slide

The specimen is placed on the slide

Light-bulb

Light source

 

 

 

 

 

 

 

 

 

 

 

 

 

To prepare plant cells for viewing under a microscope

  1. Place a drop of iodine onto a clean glass slide (iodine is used to stain (‘dye’) a cell and make it easier to see).
  2. Cut an onion and remove a thin layer of inner cells.
  3. Place it on the slide and place a cover slip on top.

 

To prepare animal cells for viewing under a microscope

  1. Use a cotton swab to get cheek cells and smear this onto a slide.
  2. Put a couple of drops of methylene blue stain on the smear and leave for a few mintues.
  3. Rinse off the stain and allow the slide to dry.

 

To examine a plant or animal cell under a microscope

  1. Put a piece of tissue on the slide and cover it with a glass slip.
  2. Place the glass slide on the stage and secure with clips.
  3. Watch from the side and turn the coarse focus wheel so that the objective lens is as close to the stage as possible.
  4. Put your eye to the eyepiece and gently turn the fine focus wheel the opposite way to sharpen the image. 

Animal Cell

 

 

 

 

 

 

 

animal plant cells

 

 

 

Plant Cell

animal plant cells

 

 

 

 

 

 

 

 

 

 

Part

Function

Cytoplasm

Most of the cell’s activities happen here

Cell membrane

Holds in the contents of the cell and controls what enters and leaves the cell 

Nucleus

Controls the activities of the cell

Vacuoles

Store food

Cell wall

Provides support and structure to plant cells

Chloroplasts

These contain chlorophyll which makes food for plant cells

 

 

 

Source : http://www.thephysicsteacher.ie/JC%20Science/JC%20Biology/Student%20Notes/2.%20Animal%20and%20Plant%20Cells.doc

Web site link: http://www.thephysicsteacher.ie/

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Animal and plant cells

 

 

Animal and plant cells

 

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Animal and plant cells

 

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Animal and plant cells

 


 

 

 

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