Plants are the organisms that carry out this chemical reaction and so it is crucial to understand what impacts this process in both terrestrial and aquatic environments. This experiment considers the photosynthesis of aquatic plants and how various concentrations of CO2 effect this process. This was done by measuring the oxygen produced by Elodea Densa submerged in various concentrations of
For this process to be successful the plant must be able to know how much soil competence it has and it does that by establishing the number of cation adhesion sites and the pH levels within its soil2 . There are four crucial stages that plants go through when using the cation exchange to get nutrients from their soil. The first stage to this process is the plant’s roots are able to add acidification to its soil. The way that the plants soil is able to become more acidic is by releasing carbon dioxide from its own respiration and pumping hydrogen ions, H+ into the plants soil2 . The second part to this process is to allow carbon dioxide (CO2) and water
Introduction: Photosynthesis is a process used by plants and specific types of bacteria in order to make their own food source from sunlight to chemical energy. It is mainly occurred within the leaves of the plant. The reaction requires light energy in order for it to be absorbed by chlorophyll. During the reaction carbon dioxide, water is converted into glucose and oxygen as shown below: Figure 1 (photosynthesis uses light energy to convert carbon dioxide into a carbohydrate) (The Chemical Equation of Photosynthesis. 2018, Accessed 16 March 2018) There are two types of photosynthetic processes; one includes oxygenic photosynthesis, which is most common and demonstrated through plants, algae and cyanobacteria while the other one is an-oxygenic photosynthesis.
B-carotene was the pigment which had the largest Rf value, and it is a pigment which is insoluble in water and petroleum ethel. Chlorophyll B on the other hand had the least Rf value and is, also insoluble in water, but very soluble in petroleum ether. Based on these results, we can deduce that those pigments with high Rf values are insoluble in the solvent, and as the Rf value decrease, the pigments become more soluble in the solvent. This order would be opposite if the solvent were to be replaced with water rather than the nonpolar solvent mixture of petroleum ether and acetone because of the polarity patterns. Chlorophyll A and B are both insoluble in water but both very soluble in the solvent made up of petroleum ether and acetone.
Because carbon dioxide is absorbed by the plant during photosynthesis less carbon dioxide present in the chamber is a sign that photosynthesis is working. The four lights used for this experiment range across the light spectrum on both sides in order to test a wider variety of wavelengths. All lights will be placed directly on the spinach leaf at the same distance so as not to give any spinach leaf a different light intensity, which could affect the data. This experiment will be able to show which light, ranging across the light spectrum, will allow the Spinach to perform photosynthesis more efficiently. Hypothesis: If four lights (UV Light, LED Light, Infrared Light, and Blue Light) are used to perform photosynthesis on a spinach leaf, then the spinach will respond most to the blue light and perform a more efficient photosynthetic process.
It is especially useful when the reaction is slow since heat loss to the surroundings would be more significant then. Comment: In Example 1, the question only provides the initial and final temperature readings. Thus ΔT = final temperature – initial temperature However, if the question does provide a graph such as the one shown above, extrapolation would be needed to determine a more accurate ΔT. Hess’s Law of Constant Heat Summation Not all enthalpy changes of reaction can be measured directly by using calorimetry and hence Hess’s Law can be used to determine the enthalpy changes that cannot be determined by direct
The Effect of Sugar Concentration on CO2 Production by Cellular Respiration in Yeast Introduction In this lab, our main focus was to find how sugar concentration affect yeast respiration rates. This was to simulate the process of cellular respiration. Cellular respiration is the process that cells use to transfer energy from the organic molecules in food to ATP (Adenosine Tri-Phosphate). Glucose, CO2, and yeast (used as a catalyst in this experiment) are a few of the many vital components that contribute to cellular respiration. Sugar/ glucose is an important carbohydrate that can be made during photosynthesis from water and carbon dioxide, using energy from sunlight.
Unit 6 Discussion Forum In your readings, you learned about how plants respond to a variety of environmental stimuli including light, gravity and even touch. Question 1: Select a specific example of how a plant responds to stimuli Introduction: Phototropism- an elongation towards one side. Hello classmate. As we studied this week, one thing that resonated with me is the plants responses to light, which is called phototropism- an elongation or growth towards or away from light source. One-sided growth.
In plants, the presence of chlorophyll pigment is vital for photosynthesis. However, plant cells produced flavonoid as a response to stress conditions as protection mechanism. In addition, light energy is converted into chemical energy in plant and fungal cells using quinones pigments. On the other
(3) Poor selective adsorption of organic pollutants from aqueous phase . (4) The photocatalytic treatment of a high concentration of organic pollutants from industrial waste poisons the photocatalyst resulting in deactivation . (5) Difficult isolation and recovery of photocatalysts from the reaction mixture is not easy. Conventional technique such as filtration and sedimentation are not efficient because of the nano-size of the photocatalyst particles. This limitation hinders the economics and sustainability of heterogeneous photocatalyst for water purification process [37-39].