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- Autotrophs and heterotrophs are similar in that Group of answer choices both turn inorganic molecules like CO2 into organic molecules. they both convert sunlight to energy for cellular work. both do cellular respiration. Autotrophs are also known as Group of answer choices there isn't enough information in the question to answer. consumers. producers. Which of the following stages of cellular respiration have NADH, ATP and pyruvic acid as its end products? Group of answer choices citric acid cycle electron transport chain glycolysis In the citric acid cycle of cellular respiration, Group of answer choices most of the ATP of cellular respiration is produced. glucose is added directly to an acceptor molecule in the citric acid cycle. NADH and FADH2 give up their electrons and hydrogen into the cycle, and leave the cycle as NAD+ and FAD. A carbon atom called acetic acid enters the cycle and 2 CO2 molecules leave the cycle.…High levels of certain plant nutrients in runoff can lead to rapid growth of algae (an algal bloom) in aquatic ecosystems. These algal blooms are generally followed by algal death and decomposition, which consumes large amounts of dissolved oxygen in the water and results in oxygen levels insufficient to support aerobic respiration. This process is known as eutrophication. The amount of algae present in a body of water can be estimated from the amount of chlorophyll a in a sample of the water. A researcher studying eutrophication collected samples at different times of the year in a freshwater ecosystem. The samples were analyzed for total nitrogen and chlorophyll a concentration (Figure 1) as well as total phosphorus and chlorophyll a concentration (Figure 2). Which of the following was the dependent variable in the researcher’s study? a.The variance of the data points from the trend line b.The slope of the trend line showing the rate…Photosynthesis is an endothermic reaction because it uses solar energy to build glucose molecules. Rubisco, an enzyme found in plants, is critical to this process. How does the presence of rubisco affect the change in free energy consumed or produced by the reactants and products? The presence of rubisco increases the free energy produced by the reactants, but the free energy consumed by glucose stays constant. The presence of rubisco increases the free energy consumed by glucose, but maintains the free energy produced by the initial reactants. The presence of rubisco decreases the energy required for activation in the transition state and increases the free energy consumed by glucose. The presence of rubisco decreases the energy required for activation in the transition state, but the change in the free energy of the reactants and products remains constant.
- The carbon cycle is one of the nature's processes that exhibits energy flow, via the transfer of chemical energy in carbohydrates, through ecosystems. True False For many organisms, including humans, the terminal electron acceptor is oxygen, the reduced form of this terminal electron acceptor is water, and the overall process is called anaerobic cellular respiration. True FalseDuring photosynthesis, low energy electrons are struck by light, bumped up to higher energy levels, and then incorporated into organic molecules. Where does the chloroplast or Cyanobacterium obtain these electrons? From carbon dioxide From sunlight From water From ATPWhich of the following accurately describes the energy during the biosynthesis of a fat molecule in plants: O Glucose -> fat molecule O Amino acids -> protein molecule O glucose -> starch molecule chemical energy -> heat and motion chemical energy-> chemical energy light energy -> chemical energy
- Which of the following does not occur in anoxygenic photosynthesis? Bacteriochlorophyll is involved in the light reaction. Water is split into oxidized and reduced parts. The system operates under anaerobic conditions. O ATP is formed via cyclic photophosphorylation.The main source of sugars that are consumed by organisms that carry out cellular respiration is: Animals Bacteria Fermentation PhotosynthesisHello sir/miss, the question and answer are provided below. Is the answer to the question correct? Explain how the carbon cycle is related to energy flow in ecosystems. As organic molecules are produced by joining and reducing carbon atoms, energy is stored in them. This is done by producers or plants. Then, when these molecules are broken down and carbon is oxidized, energy is released, this is called cellular respiration or burning. Carbon dioxide is emitted into the atmosphere and absorbed from the atmosphere when this occurs.
- Fill in the blanks with the sentences below: Energy from ATP and NADPH is used to fix CO2 and form PGAL (Calvin‑Benson cycle) Pyruvate is broken down into CO2 and acetyl CoA in the matrix Krebs cycle makes NADH molecules The absorbed energy is used to make ATP and NADPH (light reactions of photosynthesis) Glucose is broken down to form pyruvate (glycolysis) The proton gradient is used to make ATP molecules (chemiosmosis) in the mitochondria Acetyl CoA enters the Krebs Cycle ATP molecules are used to power cellular functions in all organisms 1. Light energy is absorbed by the thylakoid membranes in chloroplasts. 2. blank 3. blank 4. PGAL is used to make glucose molecules (energy storage). 5. blank 6. blank 7. blank 8. blank 9. NADH from the Krebs cycle and O2 from the light reactions of photosynthesis are used in the electron transport chain to create a proton gradient across the inner membrane of the mitochondria. 10. blank 11. blankThe basic raw materials for photosynthesis are: sugar and carbon dioxide. water and carbon dioxide. oxygen and water. sugar and water. oxygen and carbon dioxideExtremophiles are microorganisms that can survive and proliferate in extreme environments. One group of such microorganisms are lithotrophs. These are found deep beneath the Earth's surface, living on rocks under anaerobic conditions and surviving on CO2 as their sole source of carbon. Imagine that you are studying a newly discovered lithotroph and are trying to determine what it uses as a source of electrons for reducing CO2 and for producing energy. Which one of the following conditions must be met for a molecule to serve as a useful electron donor? Oxidation of the molecule occurs with a decrease in free energy. Oxidation of the molecule occurs with an increase in free energy. Reduction of the molecule occurs with a decrease in free energy. O Reduction of the molecule occurs with an increase in free energy.