Bromthymol Blues Lab Introduction In this lab our group will demonstrate if carbon dioxide (CO2) is present during photosynthesis and cellular respiration. We will attempt this experiment by using an indicator called bromthymol blue. This indicator will turn yellow if CO2 is present during cellular respiration and during photosynthesis the indicator will turn from yellow to blue if the CO2 has been absorbed by the plant. II. Purpose To demonstrate that CO2 is used during photosynthesis.
This is because of the aquatic environment in which Elodea is found. Question 3: Examine Fig. 11.3 in “Factors Affecting the Rate of Photosynthesis”. A. Which of the three species presented appears to have a photosynthetic rate/light intensity curve most similar to that of Elodea canadensis as portrayed in the column chart?
Introduction: Plants use sunlight to separate water molecules in combination with carbon dioxide to create the sugars it uses to grow and survive and it is therefore highly important in the process of photosynthesis. If a plant cannot appropriately absorb water it cannot enlarge current cells or create new plant cells for growth and survival. We live in an area of the country which receives high levels of precipitation and it is expected to increase within the at a rate of 1-2% each year (Littell et all, 2009). Flooding events will
Photosynthesis is broken down into two separate stages, the light-dependent reactions and light-independent reactions. In the light-dependent reaction, the chloroplast traps light energy from the sun and it is converted into ATP and NADPH energy. In the light-independent reaction, NADPH delivers the hydrogen and carbon dioxide atoms that help form glucose, and ATP donates energy to areas where glucose is put together from carbon. This process occurs in chlorophyll bearing cells. Chlorophyll is an amazing chemical that is the essential ingredient in photosynthesis.
Describe the changes you would expect to see to this graph if the population of cyanobacteria increased dramatically in the ocean water surrounding Hawaii in 2003. Explain your predictions. -If the population of cyanobacteria were to dramatically increase in that certain area, the amount of carbon dioxide would decrease and the amount of oxygen would increase. That means there will no longer be an issue for respiratory breathers. If the cyanobacteria kept taking away carbon dioxide, it would
Plants are the producers for an ecosystem. They photosynthesise carbon dioxide and water and produce energy in the form of carbohydrates and other molecules. Photosynthesis requires water, and plants gain water from the soil using mineral ions such as nitrate produced by the nitrifying bacteria. Hydrolysis of ATP releases energy for processes such as active transport of the nitrate ions (and others such as potassium etc) from the soil into root hair cells, a process that lowers water potential and is used to draw water into the plant from the soil. In leaves, photosynthesis involves the photolysis of water, a process that involves the attachment of two electrons to a magnesium ion in chlorophyll and the production of hydrogen ions from the breakdown of water.
To turn light into energy. • Because photosynthesis only occurs in plants, why is it essential to animal life? Animals eat plants to make energy; also plants make oxygen as a bi-product of photosynthesis. • What is the role of the light reactions? Include the reactants and the products.
During photosynthesis, glucose is produced from converted sunlight energy by plants. In general, the more light, the faster the rate of photosynthesis. However, research many years ago demonstrated that increased light intensity only increased the rate of photosynthesis up to a certain point. Therefore, the relationship of photosynthesis and cellular respiration is nonlinear (Biggs, Edison, Eastin, Brown, Maranville, & Clegg, 1971). When we put more heat the more molecules get active and produce oxygen (bubbles) to let the plant grow.
Plant Pigments Depending on Photosynthesis. Is the rate of photosynthesis faster when there are extreme light and temperatures present? Paper chromatography is a technique used for separating and identifying pigments. The solvent DPIP, (2, 6-dichlorophenol-indophenol), which is often used to substitute for NADPH, moves up the paper by capillary action. As the solvent moves up the paper, it carries along any substances dissolved in it, which are the pigments.
Water is used in photosynthesis by plants, which produce oxygen - this reaction is vital for the earth as the oxygen produced is used by humans to breath Water is used in coal powered electricity stations. The coal is burned which boils the water. The water becomes steam, which turns the turbine, activating the generator, then producing the electricity. Because water can also exist as a vapor it can be stored into the atmosphere and be delivered as rain across the planet. Water makes up 90% of the earth’s atmosphere and the other 20% is land Our bodies are about 60 percent water [source: Mayo Clinic].