ap biology photosynthesis frq

The student can use representations and models to analyze situations or solve problems qualitatively and quantitatively. This proves that chlorophyll a is an integral part in photosynthesis. AP Bio Photosynthesis FRQ.docx - Running head FREE RESPONSE Free Response Photosynthesis Catherine Allen AP Biology 1 Running head FREE RESPONSE 2 A \u2013, A – Photosynthesis is the chemical reaction plants undergo when they use light energy, (carbon dioxide) to produce glucose, cellular energy, and O, (oxygen). Remind them that Figure 8.5 can also be read from right to left, if cellular respiration is the subject. In both the C3 and C4 plants, there is the process of the light reaction. In the energy payoff phase, which follows immediately after. They are so important in fact, that some of the specific jobs and reactions are built into the structure of the membrane.

As shown in Figure 8.6, a stack of thylakoids is called a granum, and the liquid-filled space surrounding the granum is called stroma or “bed” (not to be confused with stoma or “mouth,” an opening on the leaf epidermis). Textbook content produced by OpenStax is licensed under a The breads, cereals, and pastas come largely from starchy grains, which are the seeds of photosynthesis-dependent plants. The reaction is catalyzed in plants by the enzyme polyphenol oxidase. Photosynthesis is vital because it evolved as a way to store the energy in solar radiation (the “photo-” part) as energy in the carbon-carbon bonds of carbohydrate molecules (the “-synthesis” part). OpenStax is part of Rice University, which is a 501(c)(3) nonprofit charitable corporation. Contrast the advantages and disadvantages of aerobic and anaerobic metabolism. Structural and functional evidence supports the relatedness of all domains, with organisms shared many conserved core processes. Introducing Textbook Solutions. and does not endorse, this product. Although photosynthesis and cellular respiration evolved as independent processes—with photosynthesis creating an oxidizing atmosphere early in Earth’s history—today they are interdependent. In chlorophyll a, it absorbs the most energy with dark blue and red light. Use this section to stress the importance of the interdependence between different species and the role played by photosynthesis in bringing energy to the living organisms. All of these products contain sugar—sucrose is a plant product, a disaccharide, a carbohydrate molecule, which is built directly from photosynthesis. Subsequently, these electrons are then transferred to a primary electron acceptor, a part.

The stomata are typically located on the underside of the leaf, which helps to minimize water loss. The bond in the phosphate groups is what holds the energy in the ATP and when that bond is broken the free energy is released and it is back to ADP+P. AP® Biology 2013 Scoring Guidelines . water 4.

Prepare your students for success with meticulously researched ELA, math, and science practice for grades 5-8. in the middle, but generally closer to the top, in the middle, but generally closer to the base. A) The light reactions provide ATP and NADPH to the Calvin cycle, and the cycle returns ADP, Pi, and NADP+ to the light reactions. The basic equation for photosynthesis is deceptively simple. In eukaryotes, the reactions of photosynthesis occur in chloroplasts; in prokaryotes, such as cyanobacteria, the reactions are less localized and occur within membranes and in the cytoplasm. electrons are fused to form ATP The light reactions produces ATP and NADPH, which are then used in the Calvin cycle. Although all organisms carry out some form of cellular respiration, only certain organisms, called photoautotrophs, can perform photosynthesis. Respond to the following: 11. Organisms use various strategies to capture and store free energy for use in biological processes. Which of the following i the source of the carbon in sugar produced during photosynthesis? Cyanobacteria and planktonic algae can grow over enormous areas in water, at times completely covering the surface.

These accessory pigments absorb other wavelengths of light to maximize the rate of photosynthesis. The organelle contains a structure with disk-like folds known, as the thylakoid membrane. 4 ATP and 2 NADH are then formed. Sugar, 5.

(credit a: modification of work by Steve Hillebrand, U.S.

These protons can then move back across the membrane again in order to power certain enzymes like ATP-synthase. Photosynthesis is different, as the electrons come from breaking the bonds of water, the chain is powered by sunlight, and it ends with NADP+ as an electron acceptor, producing NADPH. Fish and Wildlife Service), Science Practice Connection for AP® Courses.

Both cellular respiration and photosynthesis produce energy for an organism. There are different terms that have been used for these reactions. Aerobic cellular respiration requires free oxygen, which was not available in the Earth’s atmosphere until photosynthetic organisms produced enough oxygen as waste to support developing aerobic respiration. Therefore, photosynthesis powers 99 percent of Earth’s ecosystems. Using a photosynthetic organism of your choice, choose only ONE of the three variables ... AP Biology Questions Created Date: Photosynthesis takes place in two stages: light dependent reactions and the Calvin cycle. If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at [email protected]. Click below to access the optional student answer sheet for this specific question. Within the chloroplast are stacked, disc-shaped structures called thylakoids. What are the main cellular structures involved in photosynthesis? Replace your patchwork of digital curriculum and bring the world's most comprehensive practice resources to all subjects and grade levels. 1 Membranes are important structural features of cells. then you must include on every digital page view the following attribution: Use the information below to generate a citation. P680 If you are completing this FRQ as part of a classroom assignment, please check with your teacher on how to submit your answers. Course Hero is not sponsored or endorsed by any college or university. (credit: Associação Brasileira de Supermercados), https://openstax.org/books/biology-ap-courses/pages/1-introduction, https://openstax.org/books/biology-ap-courses/pages/8-1-overview-of-photosynthesis, Creative Commons Attribution 4.0 International License. Click the link to learn more about photosynthesis. What is the relevance of photosynthesis to living organisms? Photosystems 1 and, 2 each react to light differently based on its wavelengths but work together to create energy. a) Oxygen is used as the final electron acceptor in electron transport chains in cellular respiration. Oxygen consumption is on the Y axis and temperature in degrees Celsius is on the X axis. O2

The light reactions produce only NADPH, which is produced by the Calvin cycle.

Other organisms, such as animals, fungi, and most other bacteria, are termed heterotrophs (“other feeders”), because they must rely on the sugars produced by photosynthetic organisms for their energy needs. The student can construct explanations of phenomena based on evidence produced through scientific practices. (The structural features of the chloroplast that participate in photosynthesis will be explored in more detail later in The Light-Dependent Reactions of Photosynthesis and Using Light Energy to Make Organic Molecules.) Rate of photosynthesis will be inhibited as the level of carbon dioxide decreases. Photoautotrophs including (a) plants, (b) algae, and (c) cyanobacteria synthesize their organic compounds via photosynthesis using sunlight as an energy source.

phosphoglycerate The second Think About It question is an application of Learning Objective 2.5 and Science Practice 6.2 because you are explaining how the interdependent processes of photosynthesis and cellular respiration allow organisms to capture, store, and use free energy.

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