LSUE BIOLOGY 1001 MIDTERM EXAM, Exams of Nursing

Download LSUE BIOLOGY 1001 MIDTERM EXAM and more Exams Nursing in PDF only on Docsity! 1 | P a g e LSUE BIOLOGY 1001 MIDTERM EXAM 2024-2025 WITH ACTUAL CORRECT QUESTIONS AND VERIFIED DETAILED ANSWERS |FREQUENTLY TESTED QUESTIONS AND SOLUTIONS |ALREADY GRADED A+|NEWEST|GUARANTEED PASS |LATEST UPDATE A pH of 1 compared to a pH of 3 is: 100 times more acidic In the equation 2H2 + O2 ---->H2O, H2 molecules are ____________ and H2O molecules are ____________. a. reactants . . . products b. products . . . reactants c. created . . . destroyed d. used . . . stored Reactants ; Products In pepcid-ac or alka-seltzer tablets, you would expect a pH... Higher than 7 on pH scale Four most common elements in living oragnisms is : C, H, O, and N Often added to table salt... Iodine What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? 12 How do you calculate atomic mass of an atom? 2 | P a g e Protons + Neutrons What best describes the atomic number of an atom? Atomic number is the number of protons in an atom Tertiary structure of a polypeptide refers to it's: a. its size. b. the presence of pleated sheets. c. the amino acids of which it is made. d. the overall three-dimensional structure. Overall three-dimensional structure Peptide Bonds... Link amino acids How are genes used by cells to build proteins? The genes in DNA direct the synthesis of an RNA molecule, which is used to build a protein How is sucrose formed? From 2 monosaccharides through dehydration synthesis What is dehydration synthesis? Dehydration synthesis is the process of joining to molecules or compounds together, following the removal of water. Storage of carbohydrates is ________ in animals and ________ in plants. Glycogen ; Starch Statement that is FALSE about enzymes: They are monomers used to build proteins Where are structural proteins found? Hair and tendons Phospholipids are composed of... One glycerol molecule linked to one phosphate group and two fatty acids What is the general function of enzymes within a cell? Speeds up chemical reactions Statement regarding carbon that is FALSE? 5 | P a g e process, pressure is applied to the tap water tank to force the water molecules across the membrane into the pure water tank. After the reverse osmosis system has been operating for 30 minutes, the solution in Tank A wo Be hypertonic to tank B Bacterial production of the enzymes needed for the synthesis of the amino acid tryptophan declines with increasing levels of tryptophan and increases as tryptophan levels decline. This is an example of feedback inhibition (negative feedback) ATP can be used as the cell's energy exchange mechanism because endergonic reactions can be fueled by coupling them with the hydrolysis of high-energy phosphate bonds in ATP A steer must eat at least 100 pounds of grain to gain less than 10 pounds of muscle tissue. This illustrates The second law of thermodynamics The transfer of a phosphate group to a molecule or compound is called Phosphorylation A major function of glycoproteins and glycolipids in the cell membrane is to Allow the cells of an embryo to sort themselves into tissues and organs What is the basic difference between exergonic and endergonic reactions? Exergonic reactions release energy; endergonic reactions absorb it In the reaction A ----> B + C + heat, a. there is a net input of energy. b. the potential energy of the products is greater than that of the reactant. c. the potential energy of the products is less than that of the reactant. d. entropy has decreased. The potential energy of the products is less than that of the reactant Heating inactivates enzymes by Changing the enzymes three-dimensional shape Americans spend up to $100 billion annually for bottled water (41 billion gallons). The only beverages with higher sales are carbonated soft drinks. Recent news stories have highlighted the fact that most bottled water comes from municipal water supplies (the same source as your tap water), although it may undergo an extra purification step called reverse osmosis. Imagine two tanks that are separated by a membrane that's permeable to water, but not to the dissolved minerals present in the water. Tank A 6 | P a g e contains tap water and Tank B contains the purified water. Under normal conditions, the purified water would cross the membrane to dilute the more concentrated tap water solution. In the reverse osmosis process, pressure is applied to the tap water tank to force the water molecules across the membrane into the pure water tank. If you shut the system off and pressure was no longer applied to Tank A, you would expect The water to reverse flow from Tank B to Tank A In the lab, you use a special balloon that is permeable to water but not sucrose to make an "artificial cell." The balloon is filled with a solution of 20% sucrose and 80% water and is immersed in a beaker containing a solution of 40% sucrose and 60% water. The solution in the balloon is ________ relative to the solution in the beaker. Hypotonic Which of the following statements regarding membrane protein function is false? a. Membrane proteins serve as enzymes. b. Membrane proteins act as receptors to molecules like hormones. c. Membrane proteins form junctions between cells. d. Membrane proteins transfer genetic information to the cytoplasm. Membrane protein functions transfer genetic information to the cytoplasm Aquaporins... Allow water to cross the plasma membrane via facilitated diffusion. Which of the following statements about the absorption of photons by pigment molecules is true? The release of energy by the excited electron can be as heat, light, or fluorescence. In photosynthesis, the chemiosmotic production of ATP Is analogous to the production of ATP in mitochondria The chloroplast ATP synthase couples the flow of H+ to the phosphorylation of ADP Which of the following organisms utilizes energy from the sun? Select one: a. decomposing bacteria b. mushroom c. leopard d. giraffe e. tree tree 7 | P a g e Which level in the hierarchy shown is a community? a. level C, All organisms in the dessert b. level B, Dessert c. level A, All environments on earth supporting life d. LEVEL E, All of the choices are correct. e. level D, Group of lizards level C, All organisms in the dessert Life is organized in a hierarchical fashion. Which of the following sequences correctly lists that hierarchy from least inclusive to most inclusive? a. ecosystem, population, organ system, cell, community, molecule, organ, organism, organelle, tissue b. cell, molecule, organ system, organ, organelle, population, tissue, organism, ecosystem, community c. organism, organ system, tissue, population, organ, organelle, community, cell, ecosystem, molecule d. molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem e. None of the choices is correct. molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem Consider the following statement: "If all vertebrates have backbones, and turtles are vertebrates, then turtles have backbones." This statement is an example of a. a hypothesis. b. rationalization. c. deductive reasoning. d. inductive reasoning. e. None of the choices is correct. deductive reasoning. You've made a hot drink by dissolving a teaspoon of instant coffee and a teaspoon of sugar in a cup of hot water. Which of the following statements is true? a. You've just prepared an aqueous solution. b. The water is the solute portion of the drink. c. The instant coffee and sugar are solvents. d. The instant coffee and sugar dissolve because they have no charged regions to repel the partial positive and partial negative regions of the water molecules. You've just prepared an aqueous solution. A solution with a pH of 7 is a. strongly acidic. 10 | P a g e Cellulose differs from starch in that a. glycogen is formed by plants and cellulose by animals. b. most animals cannot break down cellulose, whereas starch is easily digested. c. starch is made of glucose monomers, whereas cellulose is made of fructose monomers. d. cellulose is highly branched, whereas starch is unbranched. most animals cannot break down cellulose, whereas starch is easily digested. Cows can derive nutrients from cellulose because a. they produce the enzymes that break down cellulose. b. they chew their food so thoroughly that cellulose fibers are broken down. c. their intestinal tract contains cellulose-hydrolyzing microorganisms. d. they convert cellulose into starch, which is easily broken down in the intestinal tract. their intestinal tract contains cellulose-hydrolyzing microorganisms. You work for a company that manufactures food products. A new "wonder food" is being distributed by a rival company. The researchers in your company determine that the "wonder food" contains only carbon, oxygen, and hydrogen. At this point, your researchers can say with certainty that the food a. includes proteins. b. could only be made of triglycerides. c. could only be made of carbohydrates. d. does not include proteins or nucleic acids. does not include proteins or nucleic acids. You're the manager of a factory that produces enzyme-washed blue jeans (the enzymes lighten the color of the denim, giving a "faded" appearance). When the most recent batch of fabric came out of the enzyme wash, however, the color wasn't light enough to meet your standards. Your quality control laboratory wants to do some tests to determine why the wash enzymes didn't perform as expected. Based on your understanding of enzyme structure, which of the following would you recommend that they also investigate? a. the temperature of the liquid in the washing vat b. the manufacturer of the fabric c. how long the fabric has been in storage d. the primary structure of the enzyme the temperature of the liquid in the washing vat Which of the following statements about internal membranes in eukaryotic cells is false? a. In eukaryotic cells, internal membranes greatly increase a cell's total membrane area. b. In eukaryotic cells, internal membranes provide an additional area for many metabolic processes to occur. 11 | P a g e c. In eukaryotic cells, internal membranes form membranous compartments called organelles. d. In eukaryotic cells, internal membranes standardize the internal environment of all cellular organelles. In eukaryotic cells, internal membranes standardize the internal environment of all cellular organelles. Which of the following statements regarding the endomembrane system is false? a. The endomembrane system is involved in the synthesis, storage, and export of important molecules. b. The endomembrane system includes the rough and smooth endoplasmic reticulum. c. The endomembrane system includes the nuclear envelope. d. The endomembrane system is a system of interrelated membranes that are all physically connected. The endomembrane system is a system of interrelated membranes that are all physically connected. Which of the following would be most affected by a mutation that prevented cells from forming tight junctions? a. attachment of cells to the surrounding matrix b. direct flow of water and small molecules from one cell to another c. integrity of the inner lining of the digestive tract d. attachment of the cytoskeleton to the inside of the plasma membrane integrity of the inner lining of the digestive tract The complex of proteins and DNA in a nondividing cell is called a. chromatin. b. a nucleolus. c. a ribosome. d. a lysosome. chromatin. The endosymbiosis hypothesis proposes that a. two cells were juxtaposed and one benefited from the other. b. a small cell lived inside a larger cell to the benefit of both cells. c. a large cell engulfed and digested a smaller cell, exposing its enzymes for use by the larger cell. d. two cells merged into one cell, improving the enzyme function of the new cell. a small cell lived inside a larger cell to the benefit of both cells. 12 | P a g e Cilia differ from flagella in that a. cilia contain nine microtubule doublets surrounding a central pair of microtubules, while flagella contain only nine microtubule doublets. b. the protein filaments of cilia are "naked," while those of flagella are wrapped in an extension of the cell membrane. c. cilia are typically more numerous and shorter than flagella. d. cilia are anchored only in the proteins of the cell membrane, while flagella are anchored in a special structure called the basal body. cilia are typically more numerous and shorter than flagella. If placed in tap water, an animal cell will undergo lysis, whereas a plant cell will not. What accounts for this difference? a. the expulsion of water by the plant cell's central vacuole b. the relative impermeability of the plant cell wall to water c. the fact that plant cells are isotonic to tap water d. the relative inelasticity and strength of the plant cell wall the relative inelasticity and strength of the plant cell wall Oxygen crosses a plasma membrane by a. osmosis. b. active transport. c. pinocytosis. d. passive transport. passive transport. Certain cells that line the stomach synthesize a digestive enzyme and secrete it into the stomach. This enzyme is a protein. Which of the following processes could be responsible for its secretion? a. endocytosis b. exocytosis c. diffusion d. pinocytosis exocytosis Which of the following processes can move a solute against its concentration gradient? a. osmosis b. passive transport 15 | P a g e Which of the following metabolic pathways is common in aerobic and anaerobic metabolism? a. the citric acid cycle b. oxidative phosphorylation c. glycolysis d. electron transport chain glycolysis The energy yield from the complete aerobic breakdown of a single molecule of glucose a. is always 32 ATP. b. increases as the supply of oxygen increases. c. can vary depending on whether NADH passes its electrons to NAD+ or FAD. d. is less than the yield from anaerobic respiration. can vary depending on whether NADH passes its electrons to NAD+ or FAD. Oxidation is the ________, and reduction is the ________. a. gain of electrons . . . loss of electrons b. loss of electrons . . . gain of electrons c. gain of oxygen . . . loss of oxygen d. gain of protons . . . loss of protons loss of electrons . . . gain of electrons Which of the following statements regarding photosynthesis is false? a. ATP is not produced during photosynthesis, but only during cellular respiration. b. Photosynthesis is ultimately powered by light energy and respiration by the chemical energy of fuel molecules. c. Photosynthesis consumes CO2; respiration consumes O2. d. Photosynthesis produces O2; respiration produces CO2. ATP is not produced during photosynthesis, but only during cellular respiration. If you expose a photosynthesizing plant to water that contains both radioactive H and radioactive O, in which of the products of photosynthesis will the radioactive H and O show up? a. H and O both in glucose b. H in glucose; O in water c. H in water; O in glucose d. H in glucose and water; O in O2 16 | P a g e H in glucose and water; O in O2 Photosystem II a. has P700 at its reaction center. b. passes electrons to photosystem I. c. does not have a reaction center. d. releases CO2 as a by-product. passes electrons to photosystem I. Which of the following molecules is both a reactant and a product of photosynthesis? a. H2O b. glucose c. O2 d. chlorophyll H2O In a photosystem, clusters of chlorophyll a, chlorophyll b, and carotenoid pigments function most like a. an antenna. b. a propeller on a motorboat. c. a windmill. d. a spring. an antenna. What is the main adaptive advantage of the C4 and CAM photosynthesis strategies over the C3 strategy? a. They help the plant conserve water and synthesize glucose efficiently under hot, dry conditions. b. They allow the plant to fix carbon more efficiently under conditions of low atmospheric CO2. c. They allow the plant to fix carbon more efficiently in dim or cool conditions. d. They make it possible for the plant to use the Calvin cycle at night. They help the plant conserve water and synthesize glucose efficiently under hot, dry conditions. Sunlight is a type of ________ energy. a. electromagnetic b. potential 17 | P a g e c. kinetic d. nuclear electromagnetic What is the name given to organisms that can make their own food and thus sustain themselves without consuming organic molecules derived from other organisms? a. chemotrophs b. heterotrophs c. synthesizers d. autotrophs autotrophs Photophosphorylation during photosynthesis differs from oxidative phosphorylation during cellular respiration in that a. it involves an electron transport chain. b. energy is stored in the form of a proton concentration difference. c. regeneration of ATP is driven by a flow of protons through an ATP synthase. d. the final electron acceptor is NADP+ and not oxygen. the final electron acceptor is NADP+ and not oxygen. The Calvin cycle constructs ________, an energy-rich molecule that a plant cell can then use to make glucose or other organic molecules. a. G3P b. ATP c. NADH d. carbon dioxide G3P Plant cells a. lack mitochondria and chloroplasts. b. lack mitochondria but have chloroplasts. c. have mitochondria but do not have chloroplasts. d. have mitochondria and chloroplasts. have mitochondria and chloroplasts. Autotrophs that utilize light as their energy source are 20 | P a g e By-products of cellular respiration include a. oxygen and heat. b. carbon dioxide and water. c. FADH2 and NADH. d. NADH and ATP. carbon dioxide and water. Which of the following is a result of glycolysis? a. production of CO2 b. conversion of glucose to two three-carbon compounds c. a net loss of two ATPs per glucose molecule d. conversion of NADH to NAD+ conversion of glucose to two three-carbon compounds Photorespiration a. may be an evolutionary relic from when atmospheric O2 levels were low. b. is of benefit to the plant since it breaks down rubisco. c. is attributable to high CO2 levels. d. produces glucose. may be an evolutionary relic from when atmospheric O2 levels were low. A theory is a. an idea that has been proven. b. a concept in the early stages that still needs to be tested. c. a description of a belief that invokes the supernatural. d. an explanation of an idea that is broad in scope and supported by a large body of evidence. e. All of the choices are correct. an explanation of an idea that is broad in scope and supported by a large body of evidence Which of the following statements regarding a common cellular activity is false? New cells are derived from cellular components like organelles The teeth of grain-eating animals (such as horses) are usually broad and ridged. This makes the teeth suitable for grinding and chewing. Meat-eating animals (such as lions) have pointed teeth that are good for puncturing and ripping flesh. This illustrates a. a food web. b. All of the choices are correct. 21 | P a g e c. a result of natural selection only. d. the connection between form and function only. e. a result of natural selection as well as the connection between form and function. a result of natural selection as well as the connection between form and function Which of the following is not an example of evolution that has resulted from human activity? a. Because of hunting, species such as bears and wolves are in danger of extinction. .b. Like certain other crops, domesticated strawberries are larger than wild strawberries. c. Some insect species are now resistant to pesticides. d. Many strains of bacteria are now resistant to some commonly used antibiotics Because of hunting, species such as bears and wolves are in danger of extinction. Which of the following statements about the properties of life is false? All organisms have the ability to maintain a constant internal temperature. Which of the following statements about genetics is true? Differences among organisms reflect different nucleotide sequences in their DNA. An antibiotic kills 99.9% of a bacterial population. You would expect the next generation of bacteria. a. to be just as susceptible to that antibiotic as was the previous generation. b. to be more resistant to that antibiotic. c. to die out due to the drastic decrease in population size. d. to be more contagious than the prior generation. e. All of the choices are correct. To be more resistant to that antibiotic. You notice that over the past month, many students on campus have started wearing a new style of school sweatshirt. You think to yourself that perhaps the bookstore has recently started selling this new sweatshirt style. This prediction is an example of Hypothesis Which of the following is a kingdom within the domain Eukarya? Fungi Which of the following statements about evolution is true? Evolution can result in adaptations Kingdom Fungi includes species a. such as mushrooms and plants. b. that obtain food by ingestion. c. that use photosynthesis to obtain food. 22 | P a g e d. that obtain food by decomposing dead organisms and absorbing the nutrients. e. All of the choices are correct. That obtain food by decomposing dead organisms and absorbing the nutrients Water's surface tension and heat storage capacity is accounted for by its a. orbitals. b. hydrogen bonds. c. mass. d. size. Hydrogen bonds As ice melts, Hydrogen bonds are broken Which of the following statements regarding matter is false? a. All life is composed of matter. b. All matter has mass. c. All matter is composed of elements. d. All matter exists in the form of compounds. e. All of the choices are correct. All matter exists in the form of compounds Which are weak bonds that are not strong enough to hold atoms together to form molecules but are strong enough to form bonds within and around large molecules? Hydrogen bonds You've been experiencing acid indigestion lately, and you'd like a quick fix for the problem. You do a little research on the Internet and discover that your problem is caused by excess stomach acid. In the pharmacy aisles, however, you're having a little trouble deciding what to purchase to address the problem. At the pharmacy counter, the clerk recommends that you purchase PEPCID AC or Alka-Seltzer tablets. If you were able to chemically analyze your stomach fluids 30 minutes after taking two tablets, you would find. a. more hydrogen ions. b. fewer hydrogen ions. 25 | P a g e Many lipids function as enzymes Which of the following lists contains only polysaccharides? Cellulose, starch, and glycogen Which of the following organisms contain the polysaccharide chitin? a. animals and plants b. plants and bacteria c. fungi and insects d. insects and plants Fungi and insects A molecule with the formula C55H110O55 is probably a. a. oil. b. steroid. c. protein. d. polysaccharide. Polysaccharide Sucrose is formed From two monosaccharides through dehydration synthesis Decreased fertility in men from developed countries may be related to Increased exposure to hormone-like chemicals in the environment In the plasma membrane, the phospholipid heads are hydrophilic and face outward toward the aqueous solution on both sides of the membrane When a cell is deprived of oxygen, its lysosomes tend to burst and release their contents into the cell. As a result of this, that cell will Undergo self-digestion and die The function of chloroplasts is Photosynthesis Mitochondria differ from chloroplasts in that mitochondria Contain membrane folds called cristae, whereas chloroplasts contain disk-like vesicles in stacks called grana Which of the following structures are used by prokaryotes for attaching to surfaces? Capsule Your throat is dry, and you want the last cough drop in the box to last a long time in your mouth. What should you do? a. Break the cough drop into little pieces and put them all in your mouth. Since each little piece must be dissolved separately, the drop will last longer. b. Keep the cough drop whole. This maintains the largest surface-to-volume ratio, and slows the 26 | P a g e dissolution of the cough drop. c. Break the cough drop into little pieces and put them all in your mouth. This decreases the surface-to- volume ratio, and slows the dissolution of the cough drop. d. It doesn't matter if the cough drop is in one piece or many pieces; the total amount of cough drop is all that matters. Keep the cough drop whole. This maintains the largest surface-to-volume ratio, and slows the dissolution of the cough drop During cell reproduction, chromatin fibers coil up into structures called Chromosomes Which organelle is involved in the catabolism of fatty acids and the detoxification of alcohol? Peroxosome The cells that produce hair contain a lot of _____, which the cells that produce the oils that coat the hair contain a lot of _____. Rough endoplasmic reticulum . . . Smooth endoplasmic reticulm A scanning electron microscope is used to study ____, whereas a transmission electron microscope is used to study _____. Cell surfaces . . . Internal cell structures Light microscopes Use light and glass lenses to magnify an image A woman is having trouble becoming pregnant. Examination of her partner's sperm indicates that dynein feet are missing from the flagella in his sperm cells. A physician explains that this could interfere with fertility by Preventing the sperm from swimming to the egg cell When a cell uses fatty acids for aerobic respiration, it first hydrolyzes fats to Glycerol and fatty acids Which of the following statements regarding glycolysis is false? Glycolysis is considered to be an ancient metabolic system because it is the most efficient metabolic pathway for ATP synthesis A drug is tested in the laboratory and is found to create holes in both mitochondrial membranes. Scientists suspect that the drug will be harmful to human cells because it will inhibit a. the citric acid cycle. 27 | P a g e b. oxidative phosphorylation. c. glycolysis. d. the citric acid cycle and oxidative phosphorylation. The citric acid cycle and oxidative phosphorylation Pyruvate Forms at the end of glycolysis The label on the box of breakfast cereal lists one serving as containing "200 calories" per serving. How many calories are actually in one serving? a. 20 b. 2,000 c. 200,000 d. 2,000,000 200,000 Which of the following organisms can make organic molecules from water and carbon dioxide? a. bear b. mushroom c. wheat d. crayfish Wheat When proteins are used as a source of energy fr the body, the proteins. a. are converted into glucose molecules, which are fed into glycolysis. b. are converted mainly into intermediates of glycolysis or the citric acid cycle. c. are hydrolyzed to their constituent amino acids; electrons are stripped from the amino acids and passed to the electron transport chain. d. are hydrolyzed to glucose and converted to acetyl CoA, which enters the citric acid cycle. Are converted mainly into intermediates of glycolysis or the citric acid cycle A culture of bacteria growing aerobically is fed glucose containing radioactive carbon and is then examined. During the citric acid cycle, radioactivity would first appear in Citrate Humans use the calories they obtain from _____ as their source of energy Food The conversion of CO2 and H@O into organic compounds using energy from light is called Photosynthesis 30 | P a g e Bacteria and Archaea Which of the following are NOT consistent with Darwin's theory of natural selection? a. Factors in the environment result in some organisms having better reproductive success than others. b. Individual organisms exhibit genetic change during their life spans to better fit their environment. c. Natural selection can lead to the appearance of new species. d. All of the choices are correct. e. Individuals in a population exhibit variations, some of which are passed from parents to offspring. Individual organisms exhibit genetic change during their life spans to better fit their environment. National Institutes of Health (NIH) study doses of vitamin C and the time if takes to recover from a cold. Group A gets 3000mg of vitamin C and Group B gets the placebo. What else would you want to know to ensure valid results? a. whether any volunteers had colds at the start of the experiment. b. whether the volunteers exercised daily. c. whether the volunteers all worked for the same company. d. what the volunteers ate during the experiment. e. All of the choices are correct. a. whether any volunteers had colds at the start of the experiment What are the levels of organization in ground-up beef muscle? organelle, cell, tissue Members of the Kingdom Animalia... Can obtain their food by eating other organisms To be scientifically valid, a hypothesis must be... a. All of the choices are correct. b. controlled. c. testable and falsifiable. d. part of a theory. e. reasonable. Testable and falsifiable What is the ultimate source of energy in nearly all ecosystems? a. radioactivity. b. sunlight. c. electricity. d. wind. Sunlight 31 | P a g e Looking through a microscope to see a prokaryotic cell. You will look for a cell that... Has a plasma membrane A hypothesis is... a. the same as a theory. b. a proposed explanation for a set of observations. c. an explanatory idea that is broad in scope and supported by a large body of evidence. d. a widely accepted idea about a phenomenon. e. All of the choices are correct. A proposed explanation for a set of observations A tree in your yard is home to 2 cardinals, a colony of ants, a wasp nest, and millions of bacteria. All these represent: A community "If all vertebrates have backbones, and turtles are vertebrates, then turtles have backbones." This statement is an example of: Deductive reasoning What is the fundamental difference between covalent and ionic bonding? In a covalent bond, partners share a pair of electrons. In an ionic bond, one partner accepts an electron from the other. Which of the following regarding chemical reactions is FALSE? Some chemical reactions create electrons, others destroy them. Diabetic does not utilize inulin properly, so they metabolize fats instead of glucose. This is called diabetic ketoacidosis, which is a common result of excessive fat metabolism which causes pH values of 7.1 or less. What happened to the blood pH and why? The pH is below normal (acidic) because the buffering capacity was exceeded. Dependent on ability of water to form hydrogen bonds with other molecules besides water? The university of water as a solvent What is another term for atomic mass? Dalton In the equation 2 H2+O2---->2H2O... Only H2O is a compound If water is pure, a chemist would expect to find... H2O molecules, H+ ions, and OH- ions An effective way to decrease production of acid precipitation would be to... 32 | P a g e Whenever possible, walk/ride a bike instead of driving