• 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...

Introduction

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.

Middle

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.

Conclusion

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. Marked by a teacher

    Osmosis Internal Assessment (Biology)

    4 star(s)

    Ensure that all potato strips are cut from the same part of the potato. Temperature of the distilled water As the temperature was only monitored with the air conditioning, when students left or entered the room for periods of time, this could potentially have changed the temperature as the room was very big.

  2. Biology HL IA - Photosynthesis of elodea lab report

    find out whether it contained any air bubbles before the experiment or during it. As a result, some recording might be unfair. Although there aren't any transparent tubes in our laboratory, I might have bought one. Furthermore, sometimes the air bubbles released from elodea did not go straight to funnel

  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 Lab - frequency of cell division in animal and plant cell

    Data collected while observing the prepared slides of onion root tip in class. Number of cells in phase was calculated by counting 20 adjacent onion root tip cells and the cell which are in interphase or actively dividing stage was determined.

  1. Enzyme IA Biology

    This can be observed through comparing the averages of oxygen produced between catalase temperatures. The cold temperature of 0�C produced an average of 5.2ml of oxygen. The room Temperature of 22�C produced an average of 23.06ml of oxygen. The high temperature of 44�C produced an average of 11.4ml.

  2. Biology Industrial Melanism of Peppered Moth Lab

    As the Industrial Revolution progressed, soot and smoke started to build up on trees and lichens (moth habitat). The melanic species of moths are better adapted than the light-coloured moths because of their ability to camouflage with the darken trees and lichen.

  1. IB Biology notes on infection and the body's responses.

    Alteration of cell membranes i. e.g. Bacitracin (topical) d. inhibition of nucleic acid synthesis i. e.g. Rifampin, bacitracin e. Antimetabolite activity i. e.g. Sulfonamides *Note that the names of antibiotics is not required for IB but included for interest; I tried to find relatively common antibiotics V. Monoclonal Antibody Production Here is a video about monoclonal antibody production: http://glencoe.mcgraw-hill.com/sites/0035456775/student_view0/chapter33/monoclonal_antibody_production.html

  2. Beet Lab. Aim: To determine the effects of temperature on the permeability of ...

    The absorbance increases with a raise in temperature while the transmittance is quite the opposite it decreases with an increase in temperature. Evaluation: Error How will it affect? Rectification 1. Different beetroots used for taking out cores We might have obtained cores of different beetroots, and since different beetroots have

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