Kelley Small Maddie, Gillian, Ally 21 October 2015 Period 5 Photosynthesis and Cellular Respiration Abstract: In this lab, we tested the rate of production and consumption of Carbon Dioxide and Oxygen from spinach leaves in different amounts of light. We tested it one time using a completely dark space and one time using a space with lots of light. In order to calculate the data, we used LoggerPro and BioChambers to measure the gases in fifteen minute intervals. There are four bar graphs, measuring
The Effects of Light on the Rate of Photosynthesis Tong Wu October 10, 2014 Lab section 82036: Mondays at 12:00 PM - 2:45 PM Performed and written by: Nayobe Bivins Stephanie Wigmore Abstract The objective of this experiment was to determine the relationship between light and the rate of the photosynthesis of the Elodea plant; that is, to describe the effects of a light source on photosynthesis. To test the effects of light on photosynthesis in this experiment, the Elodea plant was placed under
Discussion: The rate of photosynthesis is dependent on the light intensity and the chloroplasts. Spinach was blended and used in this lab for the chloroplasts. Cuvette one solution was clear with a tint of green, it included phosphate buffer, distilled water, and unboiled chloroplasts. The green colour in the solution was the chloroplasts. No DPIP was added to the solution so therefore the colour did not change. Each time after 6, 13, and 20 minutes in light, the transmittance was adjusted on the
ESS PLANNING LAB 3 Research Question: How does light intensity affect the rate of photosynthesis of green spinach leaves? Background: Spinach leaf disc normally float but the spinach discs will be filled with fluid by using a syringe (explained in method), once they are filled it affects the buoyancy of the spinach disc causing them to sink. Photosynthesis uses light energy to convert carbon dioxide and water into glucose and oxygen. When photosynthesis occurs in the leaf disc oxygen will be
CHANGE ON THE RATE OF PHOTOSYNTHESIS IN SPINACH LEAF DISKS Introduction Photosynthesis is the process in which light energy is converted into chemical energy. Using the energy of light, carbohydrates such as sugars are synthesised from carbon dioxide and water. The name photosynthesis is derived from the Greek words, photo for ‘light’ and synthesis meaning ‘putting together’. Oxygen is also released, as a waste product. Different wavelengths of light are the major factors for photosynthesis. The process
Activity of Pigments on the Rate of Photosynthesis By Rachel Whaley 3/23/15 Yumna Zahid Biology 111, Section 537 Abstract Photosynthesis converts carbon dioxide, water, and light energy into chemical energy (glucose) and oxygen, and serves as the foundation for most food webs. The distance chloroplasts were from a light source was varied and a spectrophotometer measured the rate of photosynthesis in the first experiment. Light intensity and the rate of photosynthesis were directly related. In
INTRODUCTION Photosynthesis is a chemical process in which plants, algae and certain bacteria produce oxygen and glucose using the energy from the sunlight. This process is important for life because of the oxygen and glucose released; these products are used in many life processes. Photosynthesis takes places in a wide variety of organisms and also comes in different forms; these include a form of photosynthesis that does not produce oxygen which is called anoxygenic and the other form which does
Chromatography is an approach/ method used in scientific labs to isolate mixtures by passing it in solution through a substance that causes the different molecules to move at varying/different rates. (Wixom and Gehrke, 2010) The medium through which the solution travels across has the various solutes ascending at different rates. On the medium, this appears as a separation of the compounds within the mixture. In this specific experiment, chromatography was used to understand the pigments in photosynthetic
the lab condition and field condition. It depends on the nature of germination, emergence and seedling establishments of the plants. Blum, 2013, reported that only 33% to 51% of sorghum seed planted in the field will transform into an established plant and others remain unable to attain the whole plant stature (Figure 10). Dormancy This is the resting period of the plants or plant parts. Seed dormancy is the delayed germination of the freshly harvested seeds. It is a very
decomposing. High nitrate levels can affect the blood’s ability to carry oxygen, which can be dangerous. Water high in nitrate is not considered safe for drinking. Drinkable water would have nitrate levels below 4 ppm. Based on the results of the lab, the nitrate level on the hill was 5 ppm and less than 4 ppm by the dam. This indicates unpolluted water by the dam with low nitrate levels, and most likely less invasive plant life. The level of nitrates for the water on the hill is indicative of