The number bubbles produced shows the affect of light energy to the rate of photosynthesis. Hypothesis As the distance of the light increase, the bubble produced will also increase. As the distance of the light decrease, the bubble produced will also decrease. The percentage of Sodium bicarbonate in the 200 mL water will affect the rate of oxygen bubbles in the water. Selecting variables Independent variable: • Distance of the lamp (cm) This variable needs to be changed to observe its affect on the rate of photosynthesis.
The hypothesized result was that the furthest distance would be the most effective, and absorbance would decrease as the light became closer. The results supported the hypothesis and showed that the three distances all yielded a relatively similar and that all the absorbances were in fact lower than the control group. The results also showed that as the light was moved further away from the chloroplasts the DPIP was reduced faster, producing a lower absorbance. Effect of Light Wavelength In this experiment different colors of light were tested in order to see which caused the photosynthetic process to be the most efficient. Discs made of spinach leaves were deoxygenated and placed in beakers with different wavelengths of light in order to measure which wavelength produced the most oxygen the fastest.
The process of photosynthesis is when plants use the energy in sunlight to convert water and carbon dioxide into oxygen and high-energy carbohydrates. Photosynthesis occurs inside a cell organelle called the chloroplast. The chloroplast contains green pigments called chlorophyll, which capture the energy in sunlight. The equation for photosynthesis is as follows: Light 6CO2 + 6H2O à C6H12O6 + 6O2 (Moran 2006) The raw materials needed for photosynthesis are carbon dioxide from the air (taken in through the leaves) and water, usually from the soil (taken in through the roots). The two combine initially to produce simple sugars and oxygen.
Scientific paper Introduction: (Total: 10 pts) 1. Transpiration is critical for plant physiology. In your own words, what is transpiration, and why is this important in plants? (2 pts) Transpiration is the process of liquid transforming into the gas phase of water when the stomata open. It is very important for plants; it allows plants to pull up water from the roots to support photosynthesis.
The veins in a leaf transport nutrients and water where they are needed and chloroplasts are in a plant’s mesophyll cells, which is where photosynthesis takes place. 6CO2 + 6H2O (+ light energy) C6H12O6 + 6O2 is the formula for the photosynthesis chemical reaction (Carter, 2013). There are actually two steps to the photosynthesis process: in order to convert energy into chemical, a reaction to light takes place within the thylakoid membrane. Beta-carotene, Chlorophyll and other various pigments that are vital to the light reaction are systematized into specific groups within the thylakoid membrane;
3. How would the “weather” be affected if the water was at a decreased temperature? How would the “weather” be affected if the water temperature were increased? Answer = If the weather decreased in temperature, it would have less condensation on the lid because the temperature would have been less and the water would have no evaporated. Experiment 1: Water Movement POST LAB QUESTIONS 1.
Examining Photosynthesis Research Question: How does the amount of light affect the rate of photosynthesis? Hypothesis: The higher amount of light will create a faster rate of photosynthesis. This is because photosynthesis is run by sunlight. Variables: Independent Variable: The independent variable in this experiment is amount of light. Dependent Variable: The dependent variable in this experiment is the rate of photosynthesis.
Oxygen Consumption and the ventilation rate of the fish are directly proportional to the temperature of the water. The hypothesis of this experiment is that the ventilation rate and oxygen consumption of the fish will be higher in warmer temperature water than in the cold temperature water. Discussion: In our experiment we were able to observe the change in oxygen concentration of water at two different temperatures (15C and 25C) with a fish in each environment. The results supported our hypothesis as it
For this experiment, when the temperature increases, collision between the particles also increases. Hence, the rate of reaction increases with increasing concentration. It was also observed that the more crowded the molecules are, the more likely they are to collide and react with one another. In addition, temperature usually has a major effect on the rate of a chemical reaction. Molecules at higher temperature have more thermal energy.
These four processes crucial to plant life are photosynthesis, photomorphogenesis, photoperiodism and phototropism. Photosynthesis is the process whereby plants take light energy from the sun or another source, convert it into chemical based energy, and then use this energy to survive. The light energy becomes organic molecules, which make up some fundamental structures inherent to each plant. Photosynthesis also plays a part in the ever-important process of helping to sustain human life. Carbon dioxide is pulled from the environment outside of the plant and used as a part of photosynthesis to acquire energy and to run life-sustaining processes.