. . . . .
! ! ! ! !
Plant Growth Investigation The scientific method is a way to ask and answer scientific questions by making observations and doing experiments. The question I was attempting to answer was; what are the effects of different types of water on the growth of grass? My hypothesis was if we water the grass seeds with bottled, tap, and salt water, then the seeds getting the bottled water will grow the best and be the tallest at the end of the experiment because the bottled water doesn’t have the toxins that the salt and tap water will have. We needed a lot of materials to conduct our experiment they were; • 6 Seven ounce cups • Soil • Seeds (20 per cup) • The 3 types of water (Salt, Bottled, Tap) • Graduated Cylinder • Ruler • Pencils • Sharpie • Our chart/packet Our procedure was to first gather all of the materials we needed. We first labeled each cup with what type of water we were going to use.
By using the genes from two bacteria producing organisms such as Alcaligenes Eutrophus, they could insert them into cress plants with the aim of these plants producing the PHB. This process worked and the plants and some of their offspring produced around 14% of the dry weight as PHB. Although this is not as high yielding as when it is produced in the petri dishes, it is a much more economically viable method of production and hence would give a much more substantial impact to society. Chemically PHB is from a group of biopolymers known as the polyhyroxyalkanoates. Figure 1 below shows other examples of biopolymers in