Photosynthesis: Fresh Cut Sprig Of Elodea

According to my hypothesis, the CO2 was absorb because the elodea performed photosynthesis. My hypothesis stated that “After keeping the test tubes in a light environment for 30 mins or more, the production of CO2 would decrease because more light means more photosynthesis and more oxygen.” From my experiment, the color of the carbonated water with elodea in it changed from yellow to little yellow. When the color change from yellow, it means that CO2 were absorbed and oxygen were produced as the product. This data supported my hypothesis because after 30 of light shining to the test tubes, the test tube with plant and carbonated water produce oxygen and the CO2 were absorbed.

In light reactions, light is absorbed by chlorophyll in the thylakoid membrane and energizes the electrons. ATP is created from ADP and P. NADP accepts electrons and turns in to NADPH, which is energy. Once the light reactions have taken place, the light-independent, or ‘dark’ reaction occurs in the stroma, where CO2 is converted to sugar. The

The longer the distance of the light to the sample the lesser the bubbles are produced each minute.

The light-dependent reactions produce oxygen gas and convert ADP and NADP+ into energy and NADHP. The light-dependent reactions occur in the thylakoid.

The video above shows the steps in Testing a Leaf for the Presence of Starch. The Procedure outlined below is slightly different.

The light-dependent reactions starts inside Photosystem II. A photon is pulled in by a P680 chlorophyll molecule. When a chlorophyll molecule ingest light, the vitality from this light causes an electron within the chlorophyll molecule to a higher energy level. The chlorophyll molecule is activated. This reaction in photosynthesis changes light energy into chemical energy. When chlorophyll molecule gets initiated then the energy that is created from the light is sent from one P680 chlorophyll molecule to another until it arrive at the reaction center of Photosystem

Photosynthesis occurs in two stages. In the first stage, light-dependent reactions or light reactions capture light energy and utilize it to make energy-storage molecules ATP and NADPH. During the second stage, the light-independent reactions use ATP and NADPH to capture and reduce CO2.

Overall each student made progress. The lowest growth percentage was 5 percent and highest was 50 percent.

Photosynthesis of marine marcoalgaes split into 2 processes; light reaction (photochemical reaction which is affected by concentration of the chlorophyll and irradiance) and the dark reaction (chemical process, where temperature and concentration of the substrate influence on). However between those two reactions, there is an intermediates metabolic process, where NADPH and ATP are produced. The amount of produced NADPH and ATP depends upon light limitation, which later results of dark reaction sufficiency. In photosynthesis pigments function is to absorb the light energy as photons. They are localized in the light –harvesting antenna protein – pigment (LHC) in thylakoid membraines of the chloroplast. (Dring, 1992) Bladders wrack contain wide

There are two photosystems involved that are involved in absorbing sunlight to production of ATP and NADPH. These are Photosystem II and Photosystem I, which are composed of light harvesting complex and reaction center.

Photosynthesis uses carbon dioxide and water and produces glucose. Photosynthesis provides the inputs for cellular respiration. Unlike cellular respiration which has three stages, photosynthesis has only two main stages, light reactions and the calvin cycle. The light reactions stage uses two different photosystems: water-splitting and NADPH-producing. These photosystems contain hundreds of pigment molecules such as chlorophyll a and b, and carotenoids. These pigments are very important for absorbing and reflecting light for the light reactions. The main fucnction of this first stage is to generate ATP and NADPH for the calvin cycle. The ATP and NADPH are used up along side carbon dioxide molecules to form an energy-rich sugar labeled G3P. G3P molecules are what are used to contrsuct glucose as well as other organic molecules. Carbon dioxide is essential for photosynthesis. Some plants are not able to receive the appropriate amount of carbon dioxide and therefore suffer as a result. However, some planst such a C4 and CAM plants have made evolutionary adaptations that allow the plant to still perform photosynthesis and survive on minimal amounts of carbon dioxide. These evolutionary adaptations also help to reduce water

In the thylakoid membrane is located the Photosystem consist of three components receiving energy wavelengths in the molecules at P680 and P700. The first component is the reaction center where a Chlorophyll (a) delivers an excited electron to the primary acceptor. The second component is the antenna complex, which are protein and chlorophyll molecules that transfer light energy to Chlorophyll (a). The other component is the primary electron acceptor which receives the lost electron from chlorophyll (a).

In photosynthesis plants use light to form energy-rich compounds from water and carbon dioxide from the air. The decisive reactions occur in a reaction centre in the cell. The incoming light is caught in an antenna system and finds its way to a pair of chlorophyll molecules (see picture).

Introduction: Photosynthesis occurs in the plants chloroplasts the process has two stages where a light reaction occurs also the Calvin cycle. The light reaction products are ATP, NADPH, and oxygen. The light reactions take place in the thylakoid membranes where the stages of photosystems I and II. The Calvin cycle has six steps and it takes place in the stroma. The Calvin cycle is the second step of photosynthesis and creates glucose as the final step to photosynthesis. The steps of which the Calvin cycle take place is processing a three 5-carbon compound called RuBP combines with three CO2 molecules which become three 6-carbon molecules. The second step of the Calvin cycle takes the three 6-carbon molecules which are unstable, and change into six 3- carbon molecules which are called 3- PGA. Halfway through the process of creating glucose ATP and NADPH from the light reactions provide energy and electrons to convert 3-PGA molecules into six G3P molecules. One G3P molecule exits the cycle and the remaining which is used for glucose later on. Five G3P molecules shuffle back into RuBP, getting

Chloroplasts are the main place for photosynthesis to occur in plants occurs. Chloroplasts are important organelles, and can be found within plant cells. The structure of chloroplasts are complex networks of sacs. These are called thylakoids. Chlorophyll. located within the membranes of thylakoids, give color to plants (Campbell et al. 2009). Cholrophyll is a key component in allowing most photosynthesis. Chlorophyll a and chlorophyll b are the two forms within chlorophyll. Along with chlorophylls, chloroplasts contain other photosynthesising pigments. These are called carotene