Preview

Photosynthesis Research Paper

Good Essays
Open Document
Open Document
828 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Photosynthesis Research Paper
1. Explain how photosynthesis and respiration are linked in order to provide you with energy from the food you eat.

Include in your paper:

•Complete descriptions of photosynthesis and aerobic respiration. •Describe how these two processes are linked between plants and animals based on the reactants and products (water, carbon dioxide, glucose and oxygen) of both pathways. •Include a description of how energy is transferred from sunlight to ATP, from ATP to sugars, and from sugars to your cells.
Photosynthesis is the process whereby plants utilize C02, H2O and Sunlight to create food in the form of a sugar called glucose. As a byproduct of this reaction, the plants also release oxygen.
Respiration is the process where cells
…show more content…
Chloroplasts are organelles composed of a phospholipid inner and outer membrane. Between these 2 membranes is an intramembranous space. Inside the inner membrane is a fluid called the stroma which contains thylakoids, where photosynthesis takes place.
The thylakoids are shaped like pancakes and are bounded by a membrane. Photosynthesis takes place on the thylakoid membrane. The thylakoid membrane has proteins embedded in it. The pigment chlorophyll is embedded in specialized proteins within the thylakoid membrane. Chlorophyll absorbs red and blue light, but not green. This is what gives plants their green color.
When light strikes chlorophyll, it absorbs one photon and loses one electron. The electron is now in a higher state of potential energy and is unstable. This electron is passed down a chain of modified chlorophyll molecules creating an electron transport chain. The electron is passed to NADP, reducing it to NADPH. The energy released by reducing the potential energy of the electron is used by enzymes to pump hydrogen atoms inside the membrane. This creates a proton gradient. The proton gradient is caused by a higher concentration of protons inside the membrane than outside. This proton gradient is then used to add a phosphate onto ADP, turning it into ATP. The net effect of this process is to store the energy of the proton gradient in

You May Also Find These Documents Helpful

  • Good Essays

    A molecule of chlorophyll increases in potential energy: when one of its electrons is boosted to a higher-energy excited state upon being struck by a photon of light…

    • 500 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    Chapter 10 Homework

    • 287 Words
    • 2 Pages

    2. Some students define Ps as the process by which plants use light energy as food. Discuss if…

    • 287 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Chloroplasts are the food producers of the cell. This organelle is only found eukaryotic cells. They are only found in plant cells. Chloroplasts contain small pigments called chlorophylls. Animal cells do not have chloroplasts. All green plants you see are working to convert the energy of the sun into sugars. Plants are the basis of all life on Earth. They create sugars, and the oxygen that we breathe. This process is also known as chloroplast. The mitochondria work in the opposite direction and breaks down the sugars and nutrients that the cell receives. Photosynthesis is the process of a plant taking energy from the Sun and creating sugars. When the energy from the Sun hits a chloroplast, chlorophyll uses that energy to combine carbon dioxide and water. The molecular reactions create sugar and oxygen. Plants and animals then use the sugars know as glucose, for food and energy. The chloroplast organelle is composed of three membrane layers including the outer and inner chloroplast membranes and the thylakoid membrane.…

    • 439 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Chapter 7 and 8 discuss and give in depth details on photosynthesis and cellular respiration. They are the exact opposites in what they set out to complete in the cells of a leaf. Photosynthesis takes light energy and separates it in the chloroplasts to create glucose. Cellular respiration breaks down glucose to provide energy for the cell. The similarities between them include overlap in some of the enzymes and products and reactants utilized. The differences include the cycles and steps taken to produce the final products.…

    • 515 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Chloroplasts are organelles located within specific leaf cells in which the photosynthetic process occurs. The chloroplast organelles are made up of an outer and inner envelope membrane. Like the outer membrane, a chloroplasts inner membrane is permeable to H2O, CO2 and O2 compounds. However, the inner membrane acts as a barrier, directing the flow of charged and organic molecules. Within the inner membrane of chloroplasts is an extensive membrane structure known as the thylakoid membrane (Photosynthetic membrane). The thylakoid membrane houses…

    • 478 Words
    • 2 Pages
    Good Essays
  • Good Essays

    The photosynthesis process involves sunlight, sugar, and chlorophyll. Chlorophyll is called a photoreceptor. It is found in the chloroplasts of a plant cell that is within green plants, and is what gives green plants their green color. Chlorophyll has a special role in photosynthesis. Chlorophyll molecules absorb light energy. Chlorophyll is a complex molecule, which has lead to a number of variations of chlorophyll that take place among plants and other photosynthetic organisms.…

    • 493 Words
    • 2 Pages
    Good Essays
  • Good Essays

    Plants are able to produce ATP during the light dependent reaction of photosynthesis in the thylakoid of the chloroplast. Red and blue wavelengths of light are absorbed by chlorophyll in chloroplasts on Photosystem II. The chloroplasts are protected and contained by a membrane, but they are close to the surface of the cell to catch the maximum amount of light. Their broad length also allows larger wavelengths of light to be absorbed. The energy absorbed is transferred to electrons and excites them to a higher energy level. This leads to the photolysis of water which results in the formation of hydrogen ions, electrons and oxygen gas. The electrons formed during photolysis then replace those excited by the light. The excited electrons are then passed along the electron transport chain in a series of redox reactions from one carrier to the next. The energy released by this passage is used to activate ATPase to combine ADP and Pi to form ATP. This process of converting ADP to ATP using light…

    • 1087 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Photosynthesis Review

    • 470 Words
    • 3 Pages

    Photosystems I and II are both located in the thylakoid membrane. What advantage does their proximity provide?…

    • 470 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Biology 1010 Biology

    • 649 Words
    • 3 Pages

    Photosynthesis is a process where plants ,and also certain bacteria, transform light energy into chemical energy. In order to transform energy, plants use carbon dioxide and water. Furthermore, photosynthesis in plants occurs within the light absorbing organelles called chloroplasts. All green parts of any plant have chloroplast. For instance, grass, flowers, leaves etc. In order for photosynthesis to occur, there is a relationship between photosynthesis and what is known as cellular respiration. Cellular respiration is known as an aerobic harvesting, meaning that it contains or requires oxygen, of energy from food molecules. In photosynthesis, there are products, which is an ending material in a chemical reaction and reactants which are the starting material in a reaction. In photosynthesis, the starting materials are carbon dioxide and water. Throughout the process, the products turn out to be glucose (sugar) and oxygen gas. A simplified equation for photosynthesis is the following: 6CO_2(carbon dioxide) + 6 H2O(water)+ light energy(photosynthesis) = C_6 H_12 O_6(glucose) + 6O_2(oxygen…

    • 649 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Photosynthesis starts off the cycle, with light energy being trapped within the cell and transported into the chloroplast. Water and carbon dioxide follow the similar route of the light energy and as so is collected into the chloroplast. Photosynthesis tends to take place in two stages, light-dependent reactions and the Calvin cycle or otherwise known as the light dependent reactions. Which take place in the thylakoid membrane. Light-dependent reactions, which takes place in the thylakoid use light energy to make ATP and NADPH. The Calvin cycle, which takes place in the stroma, uses energy derived from these compounds to make CO2 and glucose. The thylakoid is present inside of the chloroplast and if grouped together is known as the…

    • 498 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    The purpose of this lab was to hypothesize about cellular energetics and measuring the rates of respiration and photosynthesis, explain what cellular respiration and its aspects such as glycolysis, Krebs cycle, and electron transport chain then how each process is involved in producing ATP and why fermentation occurs. For photosynthesis PS1, PSII, and the Calvin Cycle will be discussed and how each process contributes to the making of carbohydrate and oxygen. This lab had two experiments. Experiment A analyzed cellular respiration by measuring the production carbon dioxide with various forms of sugar. Experiment B examined the effects of different colors of light has on photosynthesis reactions.…

    • 106 Words
    • 1 Page
    Satisfactory Essays
  • Good Essays

    Put simply, photosynthesis is the process of converting light energy into chemical energy and storing it in the bonds of sugar. Photosynthesis comes from the Greek language and literally means “Light Composition” or “Putting Together Light.” Photosynthesis generally takes place in plants, however it also takes place in algae and many species of bacteria. In photosynthesis, light energy is converted to chemical energy and the chemical energy is then stored in the form of glucose, or sugar. Carbon dioxide, water, and sunlight are used to produce glucose, oxygen, and water which they can then produce food from, releasing oxygen as a waste product. There are two main steps in photosynthesis - The Light Dependent Reaction and the Light Independent Reaction, or the Calvin Cycle. In the Light Dependent Reaction, plants capture and store energy from sunlight, which is converted into chemical energy in the form of ATP and NADPH. In the Calvin Cycle, ATP and NADPH are used to convert carbon dioxide and water into organic compounds that can be used for food for the plant or an animal that feeds off of the plant. Photosynthetic organisms are called photoautotrophs, which means nourishment in Greek, because they can create their own food and energy. They also use energy from light. However, not all organisms that use light as a source of energy carry out photosynthesis. Chloroplasts are necessary for photosynthesis to take place, and they specifically use chlorophyll, the green pigment involved in photosynthesis. Because of this, photosynthesis most often takes place in the leaves of plants, since that is where the chloroplasts can be found. Since photosynthesis requires carbon dioxide, water, and sunlight, all of these substances must be obtained or transported to the leaves. Photosynthesis is necessary for all aerobic life on Earth because it maintains normal levels of oxygen throughout the atmosphere and is also the source of energy for nearly all life on Earth, either…

    • 322 Words
    • 2 Pages
    Good Essays
  • Satisfactory Essays

    o Chlorophyll in the thylakoids absorbs light. The energy absorbed is used for photolysis (splitting of water molecules).…

    • 506 Words
    • 3 Pages
    Satisfactory Essays
  • Powerful Essays

    Photosynthesis lab report

    • 1783 Words
    • 6 Pages

    Every species on earth needs some kind of energy sources in order to survive. In animal cells, the mitochondria produce ATP from cellular respiration. However, the plant cells have a different type of center that produces energy- chloroplasts. The main process of photosynthesis is the absorption of light by the pigments. The light energy absorbed is first transferred by exited electrons to reaction centers. Part of the light energy is stored in ATP and NADPH through a series of electron carriers. ATP and NADPH are the energy currency, which are further used for CO2 fixation and photorespiration. (Plant Ecophysiology, 1996). The lab experiment deals with wavelength and intensity, which are the two most important variables in the photosynthesis process. Being easily found in the leaves, chloroplasts are located in plant cells. The photosynthesis process takes place inside the chloroplasts, which are stacked in thylakoids called grana. The area between the thylakoids and the inner membrane is called the stroma (Campbell, 2002). The light reactions of photosynthesis take place in the thylakoid while the Calvin cycle occurs in the stroma.…

    • 1783 Words
    • 6 Pages
    Powerful Essays