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  A) decreases B) increases C) has no effect 10) decreasing the concentration of maltose 11) adjusting the temperature to the optimum temperature 12) raising the pH to 11.0 13) increasing the concentration of maltase (enzyme) when the enzyme is saturated with substrate 14) lowering the pH to 1.0 A) noncompetitive B) competitive 15) an inhibitor that resembles the structure of.
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21) Muscle contraction requires A) copper ion and ATP. B) iron. C) calcium ion and ATP. D) lipid hydrolysis. E) carbon dioxide. 22) Muscle contraction is an example of a(n) A) anabolic process. B) catabolic process. C) glucose storage process. D) protein degradation process. E) lipid hydrolysis process. 23) In biochemical systems, the term reduction often refers to A) a loss of hydrogen.
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41) The compounds formed when fructose-1, 6-diphosphate is split are A) pyruvic acid and lactic acid. B) ethanol and acetyl CoA. C) dihydroxyacetone phosphate and pyruvic acid. D) dihydroxyacetone phosphate and glyceraldehyde 3-phosphate. E) glyceraldehyde 3-phosphate and pyruvic acid. 42) When one glucose molecule undergoes glycolysis it generates A) 6 ATP. B) 6 ATP and 2 NADH. C) 2.
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21) To what main class of enzymes does the enzyme that catalyzes the following reaction belong? A) oxidoreductase B) transferase C) hydrolase D) lyase E) isomerase 22) To what main class of enzymes does the enzyme that catalyzes the following reaction belong? A) oxidoreductase B) transferase C) hydrolase D) lyase E) isomerase 23) The hydrolysis of ester bonds in triglycerides is catalyzed.
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11) Oxidation involves the gain of electrons for a substance. 12) NAD+ acts as a hydrogen acceptor in metabolic reactions. 13) FADH2 is the oxidized form of FAD. 14) Pantothenic acid is a part of NADH. 15) Digestion of carbohydrates begins in the mouth. 16) A deficiency in the enzyme lactase causes lactose intolerance. 17) In.
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21.2   True/False Questions 1) Adenine is a purine. 2) Uracil is a pyrimidine. 3) DNA is a protein. 4) A nucleotide consists of only a base and a sugar. 5) DNA differs from RNA in the sugar it contains. 6) In the DNA double helix, a purine can only bond with a pyrimidine. 7) If the DNA.
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19.5   Matching Questions Identify the structural level in each protein.   A) tertiary B) quaternary C) primary structure D) secondary structure 1) The protein folds into a compact structure stabilized by interactions between R groups. 2) the combination of two or more protein molecules to form an active protein 3) pleated sheet 4) the peptide bonds between the amino acids 5).
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21.3   Matching Questions A) rRNA B) mRNA C) tRNA D) DNA 1) picks up the specific amino acids for protein synthesis 2) synthesized by the DNA to carry the genetic message to the ribosomes 3) contains within the nucleus of the cell the information for the synthesis of protein 4) the nucleic acid that contains the codons.
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19.4   True/False 1) Hemoglobin is a transport protein. 2) Insulin is a transport protein. 3) Zwitterions have an overall positive charge. 4) The dipeptide abbreviated as Gly-Lys is the same as the dipeptide abbreviated as Lys-Gly. 5) Sickle-cell anemia is caused by a change in the primary structure of a subunit of the hemoglobin protein. 6).
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41) In the study of genetics, the abbreviation PCR refers to A) purine chain repression. B) pyrimidine complement restriction. C) purine coded ribose. D) protein combination and replication. E) polymerase chain reaction. 42) Recombinant DNA technology requires the use of bacterial A) plasmids. B) mitochondria. C) endoplasmic reticulum. D) ribosomes. E) cell walls. 43) One therapeutic product now available due to recombinant.
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31) Procaine® and Lidocaine® were developed by modifying the structure of A) cocaine. B) nicotine. C) harmaline. D) meperidine. E) caffeine. 32) Physiologically active nitrogen-containing compounds produced by plants are called A) aromatics. B) alkaloids. C) esters. D) polymers. E) ethers. 33) Which of the following is NOT an alkaloid? A) nicotine B) caffeine C) diethylamine D) quinine E) cocaine 34) What functional group is always found in.
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18.2   True/False Questions 1) Aniline is the IUPAC approved name for aminobenzene. 2) Aniline is a primary amine. 3) Ethylmethylamine is a tertiary amine. 4) The amine functional group is rarely found in pharmacologically active compounds. 5) Primary amines contain two carbon-containing groups bonded to the nitrogen atom. 6) Amines do not form hydrogen bonds. 7) Amines.
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21) Meperidine is a synthetic compound developed from morphine. 22) Urea is one end product of protein metabolism in humans. 23) Aspartame is a sweetener made from corn. 24) The amide group is often found in pharmacologically active substances. 25) Aspirin substitutes may contain amide rather than ester functional groups. 26) When amides are hydrolyzed.
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11) Amines are mostly ionized in water. 12) Amine salts are usually liquid at room temperature. 13) Amine salts are odorless and usually highly water soluble. 14) Crack cocaine is produced by the neutralization and extraction of cocaine from its hydrochloride salt. 15) Quinine is an alkaloid used for treatment of malaria. 16) Heterocyclic amines.
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22.1   Multiple-Choice Questions 1) Which of the following is true for prokaryotic cells? A) They are more complex than eukaryotic cells. B) They are larger than eukaryotic cells. C) They contain mitochondria. D) They are found in animals. E) They do not contain a nucleus. 2) A compound that is formed in a metabolic oxidation is called.
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18.3   Matching Questions Identify the family for each of the following compounds. A) amine B) amide 1) CH3CH2NHCH3 2) Select the correct name for the following. A) dimethylethylamine B) ethyldimethylamine C) ethylamide D) N-ethyl formamide 3) 4) Classify the amines shown in column 1 as primary, secondary, or tertiary.   A) tertiary B) primary C) secondary 5)   6) CH3CH2CH2NH2 7) 8) 9) .
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19.2   Bimodal Questions 1) Immunoglobulin, a protein that stimulates immune responses, would be classified as a __________ protein. A) transport B) structural C) storage D) protection E) catalytic 2) What amino acids have polar R groups that are attracted to water? A) hydrophilic B) hydrophobic C) nonpolar D) aromatic E) hydrocarbon 3) At what pH would you expect valine, an amino acid with.
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11) Glycine is the only naturally occurring amino acid that is A) negatively charged. B) positively charged. C) neutral. D) in the L- form. E) achiral. 12) The side chain for histidine is classified as a __________ R group. A) basic B) neutral C) acidic D) nonpolar E) polar 13) A basic amino acid has an R group that contains A) an amine.
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51) With the correct choice of acid, the product(s) of the acid hydrolysis of N-methylbenzamide could be A) formic acid and aniline. B) methanol and benzoic acid. C) benzoic acid and ethylamine. D) benzoic acid and methylammonium chloride. E) formic acid, phenol, and ammonia. 52) What pharmacologically active amine is responsible for the signs and symptoms.
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20.5   Matching Questions to product with and without an enzyme. 1) energy of the substrate 2) energy of the product 3) activation energy without the enzyme 4) activation energy with the enzyme A) cofactor B) lock-and-key theory C) enzyme-substrate complex D) active site E) coenzyme 5) the temporary combination of an enzyme with the compound on which it acts 6) an organic.
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18.1   Multiple Choice Questions 1) The compound CH3CH2NHCH3 is classified as a A) primary amine. B) secondary amine. C) tertiary amine. D) quaternary amine. E) hydrated amine. 2) The compound CH3CH2NH2 is classified as a A) primary amine. B) secondary amine. C) tertiary amine. D) quaternary amine. E) hydrated amine. 3) Which of the following compounds is an amine? A) (CH3CH2)2NH B) CH3CH2CH2CH2CO2CH3 C) CH3CH2CH2CH2-O-CH2CH2CH3 D) CH3CH=O E).
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  Match the type of cellular control with the description. A) enzyme induction B) enzyme repression 12) The substrate induces the synthesis of its own metabolic enzymes. 13) The end product of a reaction combines with the regulator to produce a repressor molecule that turns off the operator gene. 14) When substrate is present in the.
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41) In the formation of N-ethylacetamide, the reactant(s) is(are) A) acetic acid and dimethylamine. B) diethylamine. C) acetamide and ethanol. D) acetic acid and ethylamine. E) ethanol and ethylamine. 42) The reaction of butanoic acid and dimethylamine gives A) N-methylbutanamide. B) N-ethylbutanamide. C) N,N-dimethylbutanamide. D) N,N-methylbutanamine. E) N-methylbutanamine. 43) Which chemical class does phenobarbital belong to? A) ester B) amine C) amide D) alkane E) ether 44) Amides.
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20.2   Bimodal Questions 1) A biological catalyst is called a(n) __________. A) lipid B) enzyme C) cofactor D) coenzyme E) substrate 2) The names of many enzymes can be recognized by the suffix __________. A) -ate B) -ite C) -ose D) -ine E) -ase 3) An enzyme that converts a cis double bond to a trans double bond is classified as a(n) __________. A).
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22.2   Bimodal Questions 1) The term that refers to all of the chemical reactions in living cells is __________. A) glycolysis B) β-oxidation C) metabolism D) anabolism E) catabolism 2) Most of the energy in the typical animal cell is produced in the __________. A) cytosol B) nucleus C) mitochondria D) lysosomes E) endoplasmic reticulum 3) The energy for most energy-requiring reactions in.
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11) Aniline is a(n) A) primary aromatic amine. B) secondary aromatic amine. C) heterocyclic amine. D) aliphatic amine. E) tertiary amine. 12) What prefix is used to show that a small alkyl group is attached to the nitrogen of aniline and not to the aromatic ring? A) N- B) C- C) Roman numerals D) Greek letters E) iso- 13) How many alkyl.
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22.4   Matching Questions Identify each of the following metabolic pathways. A) the production of glucose from noncarbohydrate molecules B) the flow of lactate and glucose between muscle and liver C) the synthesis of glycogen from glucose for storage purposes D) breaking down of macromolecules E) the conversion of glucose to lactic acid F) the conversion of pyruviate.
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11) Urease catalyzes only the hydrolysis of urea, and no other substrates.  This limited activity is called A) absolute specificity. B) extreme specificity. C) rigid specificity. D) noncompetitive specificity. E) hyperspecificity. 12) The presence of enzymes to catalyze bioreactions in our bodies allows A) us to eat non-nutritious substances without consequence. B) the activation energy of a reaction.
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  Select the type of lipid that matches the description. A) triacylglycerol B) glycerophospholipid C) steroid 11) triolein 12) aldosterone 13) testosterone 14) lecithin Identify each of the specified regions on this phospholipid as polar or nonpolar. A) polar B) neither C) nonpolar 15) Region A 16) Region B .
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19.1   Multiple-Choice Questions 1) Which of the following is NOT a function of proteins? A) provide structural components B) stores the genetic information of a living organism C) movement of muscles D) catalyze reactions in the cells E) transport substances through the bloodstream 2) Collagen, a protein found in tendons and cartilage, would be classified as a.
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21) What kind of amine can NOT form hydrogen bonds? A) primary B) secondary C) tertiary D) aromatic E) substituted 22) Amines are A) Bronsted-Lowry bases. B) Bronsted-Lowry acids. C) neutral in water solution. D) unreactive. 23) The odor of an amine can be neutralized with A) water. B) acids. C) bases. D) detergents. E) solvents. 24) Choline is a quaternary ammonium compound with a __________ charge.
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41) Pepsinogen is an example of a(n) A) coenzyme. B) cofactor. C) isoenzyme. D) allosteric enzyme. E) zymogen. 42) When an end product from an enzyme-mediated sequence is also an inhibitor for an earlier step in the reaction sequence, the process is referred to as A) feedback control. B) competitive inhibition. C) irreversible inhibition. D) negative catalysis. E) concentration control. 43) Allosteric.
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11) The DNA complement of the sequence 5'-G-C-C-A-T-3' is 3'-G-C-C-A-T-5'. 12) RNA contains no phosphate. 13) Human DNA contains many nucleotides that are not used in genes. 14) Messenger RNA carries protein synthesis information from the nucleus to the ribosomes. 15) mRNA is the smallest type of RNA. 16) Down syndrome is an acquired disease,.
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20.4   True/False Questions 1) Enzymes always require a cofactor. 2) Alanine transaminase is an example of a transferase enzyme. 3) Pyruvate carboxylase is an example of a ligase enzyme. 4)  Urease is an example of an oxidoreductase enzyme. 5) Insulin and digestive enzymes are produced as inactive forms called zymogens. 6) Enzyme cofactors are always metal.
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31) Digestion of carbohydrates begins in the A) mouth. B) stomach. C) pancreas. D) small intestine. E) large intestine. 32) An enzyme that can facilitate the breakdown of starch into smaller units is A) glucose phosphatase. B) alcohol dehydrogenase. C) amylase. D) lactase. E) maltase. 33) Lactose intolerance occurs due to A) an excess of galactose intake. B) a deficiency of β-galactosidase. C) a deficiency.
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11) The base sequence of the strand of DNA complementary to the segment 5'-T-G-G-C-A-A-C-3' is: A) 3'-T-G-G-C-A-A-C-5' B) 3'-A-C-C-G-T-T-G-5' C) 3'-A-C-C-G-U-U-G-5' D) 3'-U-C-C-G-T-T-G-5' E) 3'-A-C-G-C-T-U-G-5' 21.3 12) When DNA duplicates itself, the correct placement of the nucleotides is accomplished by A) complementary base pairing. B) polymerase. C) enzyme matching. D) base matching. E) transcription. 13) When DNA replicates, a guanine forms a base pair.
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21) In transcription A) the mRNA produced is identical to the parent DNA. B) a double helix containing one parent strand and one daughter strand is produced. C) uracil pairs with thymine. D) both strands of the DNA are copied. E) the mRNA produced is complementary to one strand of the DNA. 22) Which of the.
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41) Within hemoglobin, the heme functions as A) a disulfide bridge. B) an oxygen carrier. C) a reducing agent. D) an α subunit. E) one of the four protein subunits. 42) Hemoglobin has a total of __________ protein chains in its quaternary structure. A) one B) two C) three D) four E) five 43) The fibrous protein responsible for the structure of.
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20.1   Multiple-Choice Questions 1) Compared to an uncatalyzed reaction, an enzyme-catalyzed reaction A) uses less substrate. B) produces different products. C) occurs at a faster rate. D) requires more energy. E) requires a higher temperature. 2) Which of the following is NOT a step in the enzyme-catalyzed conversion of a substrate to product? A) The substrate changes its.
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11) Protein synthesis takes place A) in the mitochondria. B) on the endoplasmic reticulum. C) in the nucleus. D) on the ribosomes. E) in the cytosol. 12) The synthesis of glycogen can be classified as a(n) A) catabolic reaction. B) anabolic reaction. C) digestion reaction. D) phosphorylation reaction. E) β-oxidation reaction. 13) The final products of catabolic reactions are A) carbon dioxide, water,.
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19.3   Short Answer Questions 1) Collagen can be classified as a __________ protein. 2) The protein that transports oxygen in the blood is __________. 3) Proteins that stimulate immune response are known as __________. 4) Amino acids that are not synthesized in the body but must be ingested with the diet are called __________.
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22.3   True/False Questions 1) Energy production in the cell occurs primarily in the nucleus. 2) The cytosol is an aqueous solution of salts and enzymes. 3) Reactions in the mitochondria produce most of the cell's energy. 4) Lysosomes digest and recycle old cell structures. 5) Digestion of a polysaccharide is an anabolic process. 6) The production.
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21.1   Multiple-Choice Questions 1) A __________ consists of a nitrogen-containing base and a sugar. A) nucleoside B) base pair C) nucleotide D) complementary base E) pyrimidine 2) A __________ consists of a nitrogen-containing base, a sugar, and a phosphate group. A) nucleoside B) base pair C) nucleotide D) complementary base E) purine 3) Which of the following can NOT be found in a.
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