• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Biology Cell Lab

Extracts from this document...


Biology Cell Lab Design Question What are the differences between the structures and sizes of plant and animal cells? Materials Microscope Slide Cover slip Water Elodea Human Wooden stick Methylene blue Procedure The microscope was set up and the elodea leaf was picked off using tweezers and placed on a slide. A drop of water was added to the slide and a glass cover was dropped at a 45 degrees angle. The slide was examined under the microscope starting at the low objective lens then the medium objective lens and lastly the high power objective lens. The diagram of the elodea was drawn and the measurements were written down. Next, the human cheek cell slide was prepared. A drop of water was added to the slide and saliva scraped from the side of the cheek using a wooden stick was dabbed onto the drop of water. Then a drop of methylene blue was added to the mixture and a slipcover was placed on top of the specimen. ...read more.


Plants are usually in a rectangular shape surrounded by a cell wall that helps them stay in a rectangular shape. Animal cells are usually in a round oval shape and have no cell wall. Plants cells contain many chloroplasts that conduct photosynthesis while animal cells do not have those because animals do not make food through photosynthesis. Also Plant cells have a much bigger vacuole to contain water and waste while animal cells have a smaller one. Plant cells are also generally larger in size than animal cells. Limitations of Experimental Design In this experiment my experimental design did help answer my experimental question. Looking at the cells' main structures worked well because those were displayed very clearly through the microscope including the cell walls, cell membrane, the nucleus and chloroplasts. However, examining the cell's smaller structures and finding the elodea cells' nucleus did not work very well because those were not visible through the microscope. ...read more.


70 52.5 21 26.3 52.5 42 26.3 30 105 35 35 35 70 52.5 42 35 105 42 30 30 Mean = 80.5 Mean = 44.8 Mean= 30.9 Mean =31.3 This table shows that plant cells are larger than animal cells c) Compare the Elodea cells to the tomato cells. Explain why the cells of the tomato do not appear to have any chloroplasts Elodea cells are similar to tomato cells however, Elodea cells are rectangular in shape and tomato cells are circular. Tomato cells do not appear to have any chloroplasts because it is a fruit plant and therefore does not carry on photosynthesis like the Elodea cell. However, tomatoes have chromoplasts that give them the colour red. d) What structure did methylene blue stain in the animal tissue The Methylene blue stain stained the cell membrane, the nucleus and some unidentifiable structures within the cells. e) What careers would make use of the techniques learned in this activity Many careers would make use of the techniques demonstrated in this activity especially careers involved with science particularly the biology field. For example, careers involved in, medical forensics, medicine, pharmaceutical, dentistry and especially research. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Biology essays

  1. Biology lab. Observing plant and animal cells using the light microscope

    They are like threads plexiform with each other. On the fibers we can see starch. It is a form of monosaccharide's in the cell. It is like granular powder. C-Cells of potato tuber: 1.Scrape the surface of a slice of potato tuber using a scalpel. A white liquid appears. 2.

  2. Biology HL IA - Photosynthesis of elodea lab report

    energy spreads out as it travels further and further from its source (light energy travels along the circumference of an expanding circle. When light energy is released from a point, the energy is dispersed equally along the circumference. But since the circle is expanding, the circumference increases and the same light energy is distributed along a greater surface1).

  1. Should Animals have the same rights as Humans? Both animals and humans exhibit behaviours ...

    with other organisms in their environment such as those of the same species or those that might be predators or prey. This behaviour helps to ensure the survival of the offspring but does not seem to benefit the parent who is expending energy engaged in activities that do nothing to directly ensure its own survival.

  2. Enzyme IA Biology

    Place cylinder in water and turn upside down and remain so until ready for data collection 8. Prepare Hydrogen Peroxide and place in beakers a. Open Hydrogen Peroxide container b. Pour 10ml into a 10ml graduated cylinder c. Use a Pipet to adjust amount of Hydrogen Peroxide to exactly 10ml d.

  1. Bio lab - Oxygen Consumption in germinating and non-germinating seeds

    in Non-germinating Seeds ml�0.01ml Actual differences in Non-germinating Seeds ml�0.01ml 21 0 5 0.035 0.095 0.06 0.02 -0.015 10 0.06 0.445 0.385 0.035 -0.025 15 0.085 0.555 0.47 0.055 -0.03 20 0.095 0.585 0.49 0.07 -0.025 25 0.11 0.615 0.505 0.08 -0.03 30 0.135 0.655 0.52 0.095 -0.04 Processed Table

  2. Genes of fruit fly practical write up

    Wild type body and Sable body Table 2.2.7 F1 WW WW ww Ww Ww ww Ww Ww F2 W w W WW Ww w Ww ww Table 2.2.8 Phenotype Observed Hypothesis tested Expected (E-O)2/E Level of Significance Wild type 896 3 894 0.00454 0.8936 Sable body 296 1 298 0.0134

  1. Biology Industrial Melanism of Peppered Moth Lab

    After five trials, there were more melanic moths and light-coloured moths. With the intermediate-coloured "tree bark" the closest moth to the predator were also captured. The different colours of moths were equally captured with a bit more on the melanic moth side.

  2. How does the distribution of Plantago maior differ?

    6 40 17, near the bench 1 7 30 2 4 32 3 3 25 4 3 30 5 2 45 6 8 26 18, near the bench 1 4 36 2 2 35 3 5 37 4 3 35 5 1 35 6 1 36 19, under the bench

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work