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Liberty University BIOL 101 Quiz 3 Complete Solutions Correct Answers Key

Biology
Liberty University
14 pages
Shared May 2025

A quiz solution for BIOL 101 at Liberty University.

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Liberty University BIOL 101 Quiz 3 Complete Solutions Correct Answers Key More than two versions For most chemical reactions in the non - living world, the energy required to break bonds in the reactant molecules In biosynthesis of a protein, energy for bonding amino acids together comes from A producer organism is called a “producer” because it produces Physicists define energy as Reactants like hydrogen and oxygen molecules and are converted into a product like water molecules in the course of Systems that convert energy from one form to another are In a long metabolic pathway, the multiple changes made to an initial reactant molecule are entirely controlled by Energy - releasing reactions drive biosynthetic ones forward by contributing to a pool of If bacteria can get their energy for life from a single kind of chemical reaction, then that reaction An endergonic reaction always An allosteric enzyme A useful way for a cell biologist to define energy is In nature, as energy freely changes from one form to another On a cold day, your cells depend on ________ to maintain an operating temperature of 37 degrees Celsius. Whenever chemical bonds are broken, energy is __________. Whenever chemical bonds form, energy is __________. Producer organisms convert _______ energy to chemical energy — the energy of C ― H and C ― O ― H bonds. Three phosphate groups linked to a ribose sugar which, in turn, is linked to a pyrimidine base known as adenine: this phrase describes the structure of An excess amount of product accumulates at the end of a metabolic pathway. The product then binds to the allosteric site of the first enzyme along the pathway shutting down the pathway. We call this process
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The energy storage molecule that connects endergonic and exergonic reactions, driving endergonic reactions forward, is Existing chemical bonds between atoms are broken and new ones are formed between different atoms. This process The activation energy of a reaction can be lowered if the reaction is catalyzed by A single regulatory molecule can shut down multiple metabolic pathways if it is able to In respiration, chemical energy is transferred from glucose to ATP. The energy transfer however, is not 100% efficient. In the transfer, some of the energy is lost as Moving ions across a membrane requires energy when Which of the following substances would most likely enable a flagellum to drive a bacterium forward through the medium in which it is swimming? Metabolic pathways Glucose gets used up in muscle cells because Within the cell, useful chemical energy is held in stable form as In building a protein, when amino acids are to be bonded together Positively charged protons move freely from one side of the mitochondrial membrane to If moving ions across a membrane requires energy it is because To derive energy from an ATP molecule If the final product of a metabolic pathway begins to build up in excess, the pathway can often be slowed down by a process called Light dependent reactions of photosynthesis produce The wavelengths of light used in photosynthesis are found in the _________ portion of the electromagnetic spectrum. When light of the correct wavelength hits a photosynthetic pigment molecule All of the six carbon atoms in each glucose molecule leave respiration in the form of carbon dioxide. 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 is The process of aerobic respiration begins with Photosynthesis and respiration are complementing processes within a global cycle known as the Photosynthesis and respiration are complementary processes within The value of the three stages of aerobic respiration is their ability to break down glucose, a single molecule, with the resultant production of about The Krebs cycle’s NADH products are of value because In photosynthesis, ______ and ______ are used to build_______ and release______. When electrons flow between photosystems, they ________ which can be used to generate new ____________ molecules. New molecules of glucose are produced Accessory pigments enable the chloroplast to In photosynthesis the H atoms used to make high - energy carbohydrates like glucose come from In the electron transfer phosphorylation process, ______ is a reactant and _____ is a product. In the chloroplast, light dependent reactions take place in the __________________ while light independent reactions take place in the __________________. If fermentation reactions did not occur on earth then in places where no oxygen is available Oxygen is an important molecule to both respiration and photosynthesis. If evolution created these two processes one after the other, which would probably have had to appear first on earth? During the electron transfer reactions, protons (H+ ions) are pumped (moved) to one side of the inner membrane of the mitochondrion. The value of this pumping is that the proton gradient is then used Fermentation of sugar causes grape juice to become wine. In fermentation, the two products given off are ____________ and _________. The latter product accumulates in the wine during the process. The three metabolic pathways that make up aerobic respiration are really all parts of one larger pathway because Which 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 to Identify the correct order of the processes of aerobic respiration In all of aerobic respiration, the last molecule waiting at the very end to accept electrons The “powerhouse” organelle within the cell in which electron transfer reactions are occur In the light - dependent reaction, the two photosystems work together to keep the concentrations of ______ and ______ appropriate for their amounts needed in the light - independent reaction During the entire aerobic respiration process, the breakdown of a single molecule of glucose results in the production of Which of the following is the most immediate source of the greatest amount of ATP energy given off during aerobic respiration? Fermentation of sugar causes bread dough to “rise”. In fermentation, the two products given off are ____________ and _________. The latter product evaporates from the bread during the baking process A chemoautotroph is an organism that gets its energy from _______________ instead of from _________ as photoautotrophic plants do. (Heterotrophs like humans use sugar for energy.)