• Submitted By: lololo
  • Date Submitted: 01/29/2010 11:01 AM
  • Category: Science
  • Words: 827
  • Page: 4
  • Views: 262

Animal cell (cheek cell)
Introduction: Cells are basic units of life. There are animal and plant cells. Animal cell consists of a cell surface membrane, nucleus, cytoplasm, chromatin, chromosomes, mitochondria etc. Contrary to the plant cell, animal cell has got lysosome , centriole and free ribosome. But unlike the plant cell, animal cell does not have chloroplast, vacuole, cell wall, plasmodeshata and peroxisome.

Hypothesis: In this experiment we were using light microscope. After we put specimen on the stage we are expecting to see in the center animal cell and some of its parts. Specifically we are expecting to see cell membrane, cytoplasm, mitochondrion, nucleus, nuclear membrane and nucleolus. As the specimen we will use human cheek cell.

Aim: Identifying parts of animal cell and later comparing them with parts of plant cell

Equipment and materials:
• Light (compound) microscope
• Glass slides and coverslips
• Tooth pick
• Eye dropper
• Put the water on the slide
• With clean toothpick gently scrape inside of cheek
• Wipe that part of toothpick in the center of the slide
• Put the coverslip on the slide in that way to hold one end flush on the side and gently wipe the edge of the coverslip along the middle of the slide’s surface. This will make thin enough layer.
• Then, put the specimen on the part of light microscope which is called stage
• Firstly when you put slide on the stage scan your slide under low power to locate the cells
• Then if locating the cells was successful observe cells more closely under high power
Conclusion: Although I should have identified cell membrane, cytoplasm, mitochondrion, nucleus, nuclear membrane and nucleolus I managed to indentify cell surface membrane, cytoplasm, mitochondrion and nucleus. If I would repeat this experiment ever again, I would try to make better specimen, so I would try to make thinner layer. In this way I would be able to observe better, and probably I could identify...