Lab Group Members: Pooja Hattangdi and Carmen Chong Name: Tiffany Sun
Period 7 Mrs Mulligan
Sept 29th 2009
Lab 5.2 Water Balance in Living Plant Cells
Purpose: The purpose of this lab is to observe the effects of different osmosis (hypertonic, hypotonic) on a living plant cells through a microscope.
Materials:
15% NaCl Solution (Salt Solution)
Distilled Water (dropper)
1 small piece of an Onion
Cutter ( to get only the skin (epidermis)of the onion)
Microscope (also cord to connect to computer)
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Peer Reviews
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Quality of writing
Minor grammatical errors in places. Punctuation missing in the method list. Otherwise, punctuation, grammar and spelling all fine. Layout is clear with good subheadings.
Level of analysis
The materials and purpose of the experiment are clearly listed. An interesting way to carry out this experiment. Method clearly explained. The diagrams provided are accurate and explained well by being accompanied by further diagrams. The discussion answers a series of questions which shows good scientific understanding of the experiment and the principles behind osmosis.
Response to question
Created as a group experiment. Response to the question is done well. The candidate lays out the experiment well with clear pictures and sections that show good scientific understanding behind the experiment. To improve, an evaluation should have been provided discussing factors which may have confounded their experiment and how to improve it because this shows understanding on how to refine and make experiments a lot more reliable with their results.