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Study Resources (Chemistry)

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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31) The products of the saponification of a fat are A) the esters of fatty acids. B) fatty acids and glycerol. C) salts of fatty acids. D) salts of fatty acids and glycerol. E) phospholipids. 32) Glycerophospholipids can interact both with other lipids and water because they contain both __________ and __________. A) single bonds; double bonds B).
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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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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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41) Which of the following is NOT a lipoprotein that carries nonpolar lipids through the bloodstream? A) sphingosine B) LDL C) HDL D) VLDL E) chylomicron 42) The steroid hormone that increases the blood glucose and glycogen levels from fatty acids and amino acids is A) aldosterone. B) progesterone. C) cortisone. D) estrogen. E) prednisone. 43) The steroid hormone present in birth.
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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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11) Sodium benzoate is a common preservative. 12) Citric acid is an important part of glycolysis. 13) The Krebs cycle is a process that the cell uses to produce energy. 14) The Krebs cycle and the citric acid cycle are different processes. 15) Carboxylic acids are strong acids. 16) Esters are formed from the reaction.
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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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  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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21.1   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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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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17.3   True/False Questions 1) DNA is a lipid. 2) Steroids do not contain fatty acids. 3) Most plant lipids are saturated lipids. 4) Palmitic acid is an unsaturated fatty acid. 5) Oleic acid is an unsaturated fatty acid. 6) The tail of a triacylglycerol is the nonpolar end. 7) Olestra is a triacylglycerol. 8) Hydrogenation of the double.
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11) Sphingolipids contain fatty acids. 12) Many sex hormones are steroids. 13) Excess cholesterol in the blood can lead to a build up of plaque. 14) Bile salts help in the digestion of proteins. 15) In the fluid-mosaic model of cell membranes, the lipid molecules are oriented with their heads to the outside of.
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17.1   Multiple-Choice Questions 1) Which statement is NOT true? A) Lipids are found in cell membranes. B) Lipids are soluble in organic solvents. C) There are many different types of lipids. D) All lipids contain fatty acids. E) Some hormones are lipids. 2) A) wax B) triacylglycerol C) glycerolphospholipid D) glycosphingolipid E) steroid 3) A) triacylglycerol B) wax C) glycerolphospholipid D) bile salt E) steroid 4) A).
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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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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) 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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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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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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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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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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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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  Match the following. A) lower B) higher C) fatty acids D) hydrogenation E) animals F) ester G) hydrolysis H) unsaturated I) glycerin J) cholesterol K) soap L) sphingolipids M) insoluble in water N) plants 1) Triacylglycerols are formed from glycerol and __________. 2) a lipid that cannot be hydrolyzed 3) the functional group of triacylglycerols 4) a fatty acid with at least one double bond 5) phospholipids that do.
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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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16.2   True-False Questions 1) Carboxylic acids are responsible for the sweet taste of fruits and vegetables. 2) The major acidic component of vinegar is formic acid. 3) Alpha-hydroxy acids should be used at concentrations under 10% in skin care products. 4) It is always safe to use any commercial skin care product without doing.
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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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17.2   Bimodal Questions 1) A precursor of prostaglandins is __________ acid. A) oleic B) linoleic C) arachidonic D) tauric E) palmitic 2) The name of the reaction that occurs when a fat reacts with sodium hydroxide and water is __________. A) hydrogenation B) reduction C) hydration D) oxidation E) saponification 3) Bile salts are synthesized from __________. A) cephalin B) triacylglycerols C)  pancreas D) cholesterol E) lecithin 4) Cholesterol.
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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) A polyunsaturated fatty acid contains more than one A) carboxyl group. B) hydroxyl group. C) carbonyl group. D) long carbon chain. E) double bond. 12) Unsaturated fatty acids have lower melting points than saturated fatty acids because A) they have fewer hydrogen atoms. B) they have more hydrogen atoms. C) their molecules fit closely together. D) the cis double.
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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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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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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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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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51) In this diagram of a cell membrane, the small branched object labeled (A) is part of a A) steroid. B) hydrophobic region. C) membrane protein. D) glycerophospholipid. E) carbohydrate side chain. 52) In this diagram of a cell membrane, the objects labeled (E) are A)  steroids. B)  hydrophobic regions. C)  proteins. D)  phospholipids. E) carbohydrate side chains. 53) In.
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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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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) 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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31) When compared to sulfuric acid, how strong are carboxylic acids? A) stronger B) just as strong C) weaker D) not acidic at all 32) In water solution, how does dilute acetic acid behave? A) as a strong acid B) as a weak acid C) as a strong base D) as a weak base E) as a neutral compound 33) Which.
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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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  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 17) Region C .
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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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