Bio Quiz Unit 3

25 July 2022
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question
How are ATP and ADP related?
answer
ATP can turn into ADP by a phosphate group being removed and the bond being broken. this releases energy and the molecule turns into ADP.
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What types of molecules are broken down to make ATP? Which are most often broken down to make ATP?
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food molecules are most commonly broken down to make ATP
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How are some organisms able to survive without sunlight and photosynthesis?
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Chemosynthesis. this allows for an organism to create energy-storing carbon-based molecules using chemical energy instead of light energy.
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What are the roles of chlorophyll in photosynthesis?
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Chlorophyll is a molecule inside the chloroplast that absorbs energy from light. plants have two types. chlorophyll a and chlorophyll b together they absorb red and blue wavelengths of energy. Plants also have the ability to absorb green energy waves. This is important because the energy absorbed by chlorophyll is curtail to the cells.
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Describe the stages of photosynthesis. Use the terms thylakoid, light dependent reactions, and light-independent reactions
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Sunlight enters into the chloroplast into the chlorophyll where it is absorbed. The chlorophyll is held in the grana inside individual thylakoid membranes. the energy from being absorbed is then transferred along the thylakoid membrane where water molecules are broken down and oxygen molecules are released. this first part is part of the light dependent reaction. Next is the light independent reaction. This reaction uses energy from the dependent reaction. carbon dioxide is added to a cycle of chemical reactions to build larger molecules. A molecule of simple sugar is formed(typically glucose) it stores some of the energy captured by photosynthesis.
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Apply: (Critical thinking) Suppose you wanted to develop a light to help increase plant growth. What characteristics should the light have?Why?
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strong light to provide lots of energy and maybe some water added to it because photosynthesis needs sunlight and water.
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Analyze: (Critical thinking) Explain why photosynthesis is important for building the structure of plant cells.
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Photosynthesis is important to plant cells because cells need energy in order to preform duties in keeping their organelle alive. Photosynthesis is curtail to provide plants with the proper nutrition they need.
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How do the two photosystems work together to capture energy from sunlight?
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Photosystem 2 absorbs the energy and transfers it to the etc(electron transport chain). Photosystem 1 copies photosystem 2 and absorbs sunlight. The only difference is that in photosystem 2 enzymes break down water molecules. o2, H+, and electrons are all separated. and the H+ are moved by electrons.Photosystem 1 takes energized electrons NADP+ and adds a molecule turning it into NADPH. The photosystems work together to create a the proper energy.
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Explain the relationship between the light-dependent and the light-independnt reactions.
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The light dependent absorbs energy and breaks down water, produces O2, and carries the energy on. This energy in the sugar created by the dependent is used to power the independent. which uses CO2 to build big molecules and form a simple sugar.(C6H12O6)
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Connect: (Critical thinking) Explain how the Calvin cycle is a bridge between carbon in the atmosphere and carbon based molecules in the food you eat.
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The Carbon cycle takes CO2 from the atmosphere and then ATP and NADPH is used to turn the 6-carbon chain into 2 three-carbon chains. One high energy carbon molecule leaves for every 3 normal carbon molecules. energy from ATP is used to turn the 3-carbon back into a 5-carbon. This energy from ATP comes from food and the carbon from the atmosphere bonds with the ATP to make a bigger molecule to feed the cells.
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Evaluate: (Critical thinking) Explain why the chemical equation for photosynthesis is a highly simplified representation of the process. How is the equation accurate? How is it inaccurate?
answer
equation: 6CO2+6H2O->->C6H12O6+6O2 which is carbon dioxide+water goes through light and enzymes produce a sugar and oxygen. this is the simplified process because carbon dioxide and water are needed and they do go through light and enzymes to produce sugar and oxygen, but there is more to them. Its more complex in the places it goes and what is added to get a end result.
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How are cellular respiration and glycolysis related?
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glycolysis is part of cellular respiration. glycolysis splits glucose into 2 three-carbon molecules and makes two molecules of ATP. This product is taken to the Krebs cycle. all part of cellular respiration.
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Summarize the aerobic stages of cellular respiration. Be sure to discuss the Krebs cycle and the electron transport chain in your answer.
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Cellular respiration as a whole is aerobic(needs oxygen to take place) although Glycolysis is anaerobic (doesn't need oxygen). The Krebs cycle takes glycolysis three-carbon molecule and breaks it down through a cycle of chemical reactions. some ATP is made and CO2 is released as waste. the energy is then taken and transferred through a serious of proteins. In the etc. a large amount of ATP is made. Oxygen enters and is used to make water. the water and some heat are given off as waste products.
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Analyze: (Critical thinking) Describe the relationship between cellular respiration and photosynthesis. Discuss the functions of chloroplasts and mitochondria.
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Photosynthesis and cellular respiration are almost opposites. their equations are opposite. photosynthesis uses the products of cellular respiration. It converts energy from sunlight into sugar . Cellular respiration needs the products of photosynthesis and it releases energy from sugar to make ATP that the cells use.
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Apply: (Critical Thinking) Is glucose a reactant in the aerobic stages of cellular respiration? Explain.
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No. glucose is used in glycolysis which uses no oxygen and therefore glucose is not aerobic.
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What is the role of pyruvate in cellular respiration?
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pyruvate is used in the Krebs cycle of cellular respiration. It works with carbon dioxide to create large molecules and recycles molecules.
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Describe in your own words the function of the Krebs cycle.
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The Krebs cycle rearranges and splits and bonds carbon dioxide and ATP, causing energy to be formed and sugar to be produced.
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Explain the functions of electrons, hydrogen ions, and oxygen in the electron transport chain.
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electrons help by transporting energy throughout the cell. Hydrogen ions are a product and help keep the concentration gradient. Oxygen is needed to bond with and split up atoms that are used in the etc.
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Compare and Contrast: (Critical thinking) Describe the similarities and differences between the Krebs cycle and the Calvin cycle.
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The cycles are similar because they produce energy and sugar. they are different because the Calvin Cycle requires carbon dioxide and the Krebs cycle uses 3-carbon molecules.
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Evaluate: (Critical thinking) Is oxygen necessary for the production of all ATP in your cells? Why or why not?
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Yes. Oxygen is used to help with the separation of water molecules which are used to produce and move ATP.
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What is the relationship between glycolysis and fermentation?
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Fermentation is a process that takes place that allows for glycolysis to take place without the use of oxygen. Fermentation is used in food and humans .
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Summarize the process of alcoholic fermentation in yeast.
answer
pyruvate and NADH from glycolysis enter into alcoholic fermentation. 2 NADH molecules provide energy to break down the pyruvate into an alcohol and carbon dioxide. As the NADH is used it convert back into NAD+. the molecule of NAD+ is recycled back into glycolysis and that allows glycolysis to continue.
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Compare and Contrast: (Critical thinking) How are lactic acid fermentation and alcoholic fermentation similar? How are they different?
answer
They are similar because they both use NAD+ and NADH and recycle them to keep glycolysis going they are different because lactic acid create 2 lactic acid chains while alcoholic produces. 2 alcohol and 2 carbon dioxide chains.
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Compare and Contrast: (Critical thinking) Describe the similarities and differences between cellular respiration and fermentation.
answer
Cellular respiration uses glycolysis so does fermentation. cellular respiration uses oxygen, fermentation doesn't. Fermentation produces: 2 lactic acid chains and2 alcohol and 2 carbon dioxide chains. Cellular respiration produces simple sugar.