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Study Resources (Chemistry)

11) A theory is always true and can never be proven as wrong. 12) Theories can be tested and validated through experimentation. 13) If experimental results contradict a hypothesis, the hypothesis must be either revised or discarded. 14) The Greek philosophers used observation and experimentation to understand the world. 15) A scientific law is.
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11) The heart muscle's primary source of fuel is A) glucose. B) fatty acids. C) amino acids. D) glycogen. E) lactate. 12) Red blood cells do not metabolize fatty acids because they have A) no nucleus. B) a cell wall. C) a cell membrane. D)  no mitochondria. E) no DNA. 13) Fat stores in the body are mobilized when A) adipocyte concentrations are.
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21) All of the following can be considered physical properties EXCEPT A) taste. B) color. C) flammability. D) density. E) boiling point. 22) Which of the following items is a physical property? A) the corrosive action of acid rain on granite B) the odor of spearmint gum C) the combustion of gasoline D) the tarnishing of a copper statue E) none.
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41) Electron transport is also called A) the citric acid cycle. B) β-oxidation. C) transamination. D) the respiratory chain. E) fermentation. 42) In electron transport, NADH and FADH2 are used to provide A) oxygen. B) electrons and hydrogen ions. C) carbon atoms. D) water and carbon dioxide. E) thiol groups. 43) The energy released during electron transport is used to produce A) glucose. B).
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21) All carbon atoms have exactly 6 protons. 22) The atomic number of nitrogen is 14.01. 23) Mendeleev is best remembered for his pioneering work on determining atomic structure. 24) Mendeleev's early periodic table predicted the existence of elements that had yet to be discovered. 25) In the modern periodic table, elements are listed.
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True/False Questions 1) Numbers are usually written so that the uncertainty is in the last reported digit. 2) The decimal number 0.0000010 expressed in scientific notation is 1.0  × 106. 3) The decimal number 0.0210 expressed in scientific notation is 2.10 × 10-2. 4) The mass of an object, 4.55 × 10-3 g, expressed.
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41) In order, what is the freezing point, room temperature and boiling point of water according to the Fahrenheit scale? A) 32-75-212 B) 0-75-100 C) 0-25-100 D) 0-298-373 E) none of the above 42) In order, what is the freezing point, room temperature and boiling point of water according to the Celsius scale? A) 32-75-212 B) 0-75-100 C) 0-25-100 D).
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24.3   Matching Questions Match the following. A) chylomicrons B) FAD C) GTP D) acidosis E) essential amino acid F) β oxidation G) transaminated amino acid H) ketone bodies I) Coenzyme A J) a ketogenic amino acid K) a glucogenic amino acid L) ATP M) alkalosis 1) compounds produced when there is little or no carbohydrate metabolism and a subsequent increase in fat metabolism              2).
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True/False Questions 1) Matter is defined as anything that is visible to the human eye. 2) An amorphous solid has long range, repeating order. 3) Gases are the only form of matter that is compressible. 4) Liquids have definite volume and indefinite shape. 5) Solids have indefinite shape and volume. 6) In a solid substance, the.
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21) Determine the answer to the following equation with correct number of significant figures: 106 ÷ 9.02 × 1.9 = ________ A) 22.32816 B) 22.328 C) 22.3 D) 22 E) none of the above 22) Determine the answer to the following equation with correct number of significant figures: 2.02 + 8.102 - 0.0297 = ________ A) 10.0923 B) 10.09 C) 10.1 D).
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23.2   Short Answer Questions In this figure depicting the Stages of Metabolism taken from your text, identify the metabolicsubstance numbered. 1) substance 1 2) substance 2 3) substance 3 4) substance 4 5) substance 5 6) substance 6 7) substance 7 8) substance 8 9) process 9 10) process 10 11) process 11 .
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23.1   Multiple-Choice Questions 1) When combined with electron transport, one turn of the citric acid cycle produces __________ ATP. A) 24 B) 12 C) 11 D) 14 E) 2 2) Which coenzyme is the electron acceptor in the following reaction? A) FAD B) NAD+ C) FMN D) NADH E) FADH2 3) Which coenzyme is the electron acceptor in the following reaction? A) FAD B) NAD+ C).
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21) During complete oxidation of the fatty acid CH3(CH2)18COOH, __________ molecules of acetyl CoA are produced, and the fatty acid goes through the β-oxidation cycle __________ times. A) ten; ten B) nine; ten C) nine; nine D) nine; eight E) ten; nine 22) What is the total number of ATP molecules produced from the lauric acid.
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31) Which of the following metabolic pathways can occur in the absence of oxygen? A) electron transport B) oxidative phosphorylation C) citric acid cycle D) glycolysis E) β-oxidation 32) Under anaerobic conditions, there is a net production of __________ ATP during glycolysis. A) zero B) two C) four D) six E) eight 33) Cyanide ion and carbon monoxide inhibit A) cytochrome c oxidase. B).
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21) The citric acid cycle step that removes the first CO2 molecule is a(n) A) oxidative decarboxylation. B) reduction. C) carbonylation. D) hydrolysis. E) combination. 22) In the third major step of the citric acid cycle, NAD+ is converted to A) NAS-. B) NAD2+. C) NADH2 D) NAD. E) NADH. 23) Step 5 of the citric acid cycle is the hydrolysis of.
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Multiple Choice Questions 1) Which of the following statements about matter is FALSE? A) Matter occupies space and has mass. B) Matter exists in either a solid, liquid or gas state. C) Matter is ultimately composed of atoms. D) Matter is smooth and continuous. E) none of the above 2) Which of the following is NOT an.
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True/False Questions 1) The smell of the ocean is caused by atoms. 2) The atom is the fundamental building block of everything we hear, feel, see, and experience. 3) An atom is the smallest identifiable unit of a compound. 4) John Dalton was the first person recorded as thinking that matter was ultimately composed.
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True/False Questions 1) Chemicals make up everything around you, including your own body. 2) Chemists study the properties of substances and the particles that compose those substances. 3) When a sealed can of soda pop is opened, the carbon dioxide gas fizzes out because the pressure is released. 4) The properties of water do.
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Multiple Choice Questions 1) The correct scientific notation for the number 0.00050210 is: A) 5.0210 × 104 B) 5.021 × 10-4 C) 5.021 × 104 D) 5.0210 × 10-4 E) none of the above 2) The correct scientific notation for the number 500.0 is: A) 5 × 102 B) 5.00 × 102 C) 5.000 × 102 D) 5 × 10-2 E) none.
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21) Antoine Lavoisier proposed the atomic theory. 22) John Dalton proposed the atomic theory. 23) The first step in acquiring scientific knowledge is often the observation or measurement of some aspect of nature. 24) If a hypothesis is falsifiable, it means that the hypothesis was once considered true but is now considered false. 25).
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11) Which of the following items is a mixture? A) water B) helium C) brass D) sugar E) none of the above 12) Which of the following is a heterogenous mixture? A) milk B) sugar water C) raisin bran D) air E) none of the above 13) Which of the following is a homogeneous mixture? A) trail mix B) stainless steel C) water D) molten iron E).
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11) What is the definition of a scientific theory? A) a brief statement that summarizes past observations and predicts future ones B) a model that explains the underlying reasons for observations and laws C) the equivalent of a scientific opinion which others may disagree with D) a method of learning that emphasizes reason as.
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31) Which type of energy is associated with motion? A) chemical B) electrical C) potential D) kinetic E) none of the above 32) Which type of energy is associated with position? A) chemical B) electrical C) potential D) kinetic E) none of the above 33) What type of energy is associated with the burning of gasoline? A) kinetic B) potential C) electrical D) chemical E) none of.
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Essay Questions 1) What is chemistry? 2) What are the important characteristics of the scientific method? 3) What is the difference between a scientific law and a scientific theory? 4) Charcoal was burned in a barbecue grill. The ashes that remained weighed considerably less than the charcoal that was burned. Does this mean that.
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  Identify each of the following metabolic pathways. A) ketogenesis B) transamination C) β oxidation D) lipogenesis E) oxidative deamination 11) the conversion of fatty acids to 2-carbon units of acetyl Coenzyme A 12) the conversion of an amino acid to an α-keto acid 13) the combination of 2-carbon units of acetyl CoA to form fatty acids 14) the removal.
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11) Skim milk is a heterogeneous mixture. 12) Air is a pure substance. 13) Sugar is a pure substance. 14) Chemical properties of a substance are those that can be observed without changing the composition of a substance. 15) Flammability of gasoline is a chemical property. 16) The odor of gasoline is a chemical property. 17).
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23.3   True/False Questions 1) In reaction 4 of the citric acid cycle, α-ketoglutarase , a five-carbon keto acid, is decarboxylated. 2) Cyt c is a component of complex IV. 3) The energy levels of complexes decrease as electron transport progresses. 4) NAD+ acts as a hydrogen acceptor in metabolic reactions. 5) FADH2 is the oxidized.
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Multiple Choice Questions 1) Which of the following statements about soda pop is FALSE? A) Soda pop is a chemical mixture of mostly sugar, water and carbon dioxide. B) The molecules important to fizzing are carbon dioxide and water. C) The carbon dioxide is forced to mix with the water by the presence of.
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24.1   Multiple-Choice Questions 1) The digestion of fats begins in the A) mouth. B) stomach. C) small intestine. D) large intestine. E) pancreas. 2) The digestion of fats begins when the fat globules are A) emulsified by bile salts. B) attacked by protease enzymes to form smaller fat globules. C) converted to lipoproteins for greater solubility. D) hydrolyzed to glucose and.
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41) The letters ACP stand for A) acetyl Coenzyme P. B) aconitate protein complex. C) acetyl condensing protein. D) acyl carrier protein. E) acetyl CoA-palmitate. 42) Fatty acid synthesis takes place primarily in A) liver cells. B) intestinal cells. C) brain cells. D) muscle cells. E) adipocytes. 43) The production of new fatty acids is called A) gluconeogenesis. B) β oxidation. C) transesterification. D) oxidation. E) lipogenesis. 44).
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Algorithmic Questions 1) The exponential 104 is equal to which decimal number? A) 10,000 B) 1 C) 10 D) 100 E) none of the above 2) The decimal value 10 is equal to which exponential? A) 104 B) 103 C) 102 D) 101 E) none of the above 3) The decimal value 0.01 is equal to which exponential? A) 10-3 B) 10-2 C) 10-4 D) 10-5 E) none.
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11) The number 4,450,000.0 has 3 significant figures. 12) The number 7.20 × 103 contains three significant figures. 13) When the temperature of an object is reported as 23.7°C, the actual temperature can be assumed to be between 23.6°C and 23.8°C. 14) Scientific numbers are reported so that every digit is certain except.
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31) The correct multiplier for the prefix pico is: A) 10-3 B) 10-6 C) 10-9 D) 10-12 E) none of the above 32) The correct multiplier for the prefix femto is: A) 10-15 B) 10-12 C) 1012 D) 109 E) none of the above 33) The correct multiplier for the prefix milli is: A) 10-3 B) 10-6 C) 10-9 D) 10-12 E) none of the above 34) The.
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31) When a chemical "cold pack" is activated, the chemical reactants absorb heat from the surroundings. 32) The process of boiling water is an endothermic process. 33) A chemical change that will lower the potential energy of the chemical results in an endothermic reaction. 34) An energy diagram that shows the products having.
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Algorithmic Questions 1) How many Calories are in 575.0 calories? A) 575,000 B) 0.5750 C) 137.6 D) 2,404 E) none of the above 2) How many joules are in 55.2 calories? A) 13,200 B) 55,200 C) 13.2 D) 231 E) none of the above 3) What is the value of -25°C on the Kelvin scale? A) 248 B) -32 C) -13 D) -298 E) none of the above 4).
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  Indicate the amount of ATP produced when each of the following reactions occurs. A) 6 ATP B) 2 ATP C) 36 ATP D) 12 ATP E) 3 ATP 1) complete oxidation of glucose 2) Acetyl CoA  →  2CO2 3) glucose  →  2 pyruvate under aerobic conditions 4) glucose  →  2 lactate 5) pyruvate  →  acetate  +  CO2 A) oxidative phosphorylation B) coenzyme.
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24.2   True/False Questions 1) Fatty acids can be used in the brain as an energy source. 2) Red blood cells have mitochondria, which serve as an energy production site. 3) Chylomicrons consist of bile salts and lipids. 4) β oxidation adds two-carbon segments to a fatty acid chain. 5) A ten carbon saturated fatty acid.
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