Liberty University BIOL 101 Quiz 3 Complete Solutions Correct Answers Key

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Liberty University BIOL 101Quiz 3 Complete Solutions Correct Answers KeyMore than two versionsFor most chemical reactions in the non-living world, the energy required to break bonds inthe reactant moleculesIn biosynthesis of a protein, energy for bonding amino acids together comes fromA producer organism is called a “producer” because it producesPhysicists define energy asReactants like hydrogen and oxygen molecules and are converted into a product like watermolecules in the course ofSystems that convert energy from one form to another areIn a long metabolic pathway, the multiple changes made to an initial reactant molecule areentirely controlled byEnergy-releasing reactions drive biosynthetic ones forward by contributing to a pool ofIf bacteria can get their energy for life from a single kind of chemical reaction, then thatreactionAn endergonic reaction alwaysAn allosteric enzymeA useful way for a cell biologist to define energy isIn nature, as energy freely changes from one form to anotherOn a cold day, your cells depend on ________ to maintain an operating temperature of 37degrees Celsius.Whenever chemical bonds are broken, energy is __________. Whenever chemical bondsform, energy is __________.Producer organisms convert _______ energy to chemical energy—the energy of C―H andC―O―H bonds.Three phosphate groups linked to a ribose sugar which, in turn, is linked to a pyrimidine baseknown as adenine: this phrase describes the structure ofAn excess amount of product accumulates at the end of a metabolic pathway. The productthen binds to the allosteric site of the first enzyme along the pathway shutting down thepathway. We call this process

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The energy storage molecule that connects endergonic and exergonic reactions, drivingendergonic reactions forward, isExisting chemical bonds between atoms are broken and new ones are formed betweendifferent atoms. This processThe activation energy of a reaction can be lowered if the reaction is catalyzed byA single regulatory molecule can shut down multiple metabolic pathways if it is able toIn respiration, chemical energy is transferred from glucose to ATP. The energy transferhowever, is not 100% efficient. In the transfer, some of the energy is lost asMoving ions across a membrane requires energy whenWhich of the following substances would most likely enable a flagellum to drive a bacteriumforward through the medium in which it is swimming?Metabolic pathwaysGlucose gets used up in muscle cells becauseWithin the cell, useful chemical energy is held in stable form asIn building a protein, when aminoacids are to be bonded togetherPositively charged protons move freely from one side of the mitochondrial membrane toIf moving ions across a membrane requires energy it is becauseTo derive energy from an ATP moleculeIf the final product of a metabolic pathway begins to build up in excess,the pathway canoften be slowed down by a process calledLight dependent reactions of photosynthesis produceThe wavelengths of light used in photosynthesis are found in the _________ portion of theelectromagnetic spectrum.When light of the correct wavelength hits a photosynthetic pigment moleculeAll of the six carbon atoms in each glucose molecule leave respiration in the form of carbondioxide. Most of them leave during which part of aerobic respiration?Which of the following phrases best describes the role of NADPH in photosynthesis?In the process of glycolysis one molecule of _______ is converted to two molecules of__________.The overall process that uptakes energy-poor molecules (CO2 and H2O) from their reservoirs

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in nature and converts them into energy-rich molecules isThe process of aerobic respiration begins withPhotosynthesis and respiration are complementing processes within a global cycle known asthePhotosynthesis and respiration are complementary processes withinThe value of the three stages of aerobic respiration is their ability to break down glucose, asingle molecule, with the resultant production of aboutThe Krebs cycle’s NADH products are of value becauseIn photosynthesis, ______ and ______ are used to build_______ and release______.When electrons flow between photosystems, they ________ which can be used to generatenew ____________ molecules.New molecules of glucose are producedAccessory pigments enable the chloroplast toIn photosynthesis the H atoms used to make high-energy carbohydrates like glucose comefromIn the electron transfer phosphorylation process, ______ is a reactant and _____ is a product.In the chloroplast, light dependent reactions take place in the __________________ whilelight independent reactions take place in the __________________.If fermentation reactions did not occur on earth then in places where no oxygen is availableOxygen is an important molecule to both respiration and photosynthesis. If evolution createdthese two processes one after the other, which would probably have had to appear first onearth?During the electron transfer reactions, protons (H+ ions) are pumped (moved) to one side ofthe inner membrane of the mitochondrion. The value of this pumping is that the protongradient is then usedFermentation of sugar causes grape juice to become wine. In fermentation, the two productsgiven off are ____________ and _________. The latter product accumulates in the wineduring the process.The three metabolic pathways that make up aerobic respiration are really all parts of onelarger pathway becauseWhich of the following is valuable as the most immediate source of the greatest amount of

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ATP energy given off during aerobic respiration?Light independent reactions serve toIdentify the correct order of the processes of aerobic respirationIn all of aerobic respiration, the last molecule waiting at the very end to accept electronsThe “powerhouse” organelle within the cell in which electron transfer reactions are occurInthelight-dependentreaction,thetwophotosystemsworktogethertokeeptheconcentrations of______ and ______ appropriate for their amounts needed in the light-independent reactionDuring the entire aerobic respiration process, the breakdown of a single molecule of glucoseresults in the production ofWhich of the following is the most immediate source of the greatest amount of ATP energygiven off during aerobic respiration?Fermentation of sugar causes bread dough to “rise”.In fermentation, the two products givenoff are ____________ and _________.The latter product evaporates from the bread duringthe baking processA chemoautotroph is an organism that gets its energy from _______________ instead of from_________ as photoautotrophic plants do.(Heterotrophs like humans use sugar for energy.)

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