Notes in BioChem 1: Exam 1 Review

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Published	10/01/2024	A buffer system consists of: a. a weak base and a weak acid b. a weak acid and its conjugate base c. a strong acid and a strong base d. none of the ab…
Published	10/01/2024	A living cell put into a hypotonic solution will: a. Swell or burst  b. shrink c. not change its size
Published	10/01/2024	A living red blood cell put into a hypertonic solution will: a. swell or burst b. shrink c. not change its size
Published	10/01/2024	Carbon generally forms four bonds and is considered: a. tetravalent b. monovalent c. divalent d. trivalent
Published	10/01/2024	Dissociation of a weak acid is described as: HA = H+ + A- At which condition pH of this buffer is equal to its pKa value? a. When [A-] is equal t…
Published	10/01/2024	Glucose has four chiral carbon atoms. How many stereoisomers are possible for glucose?  a.  16 b.  8 c.  4 d.  24
Published	10/01/2024	How many lone pairs of electrons are on the oxygen atom? a. one b. three c. two d. four
Published	10/01/2024	Hydrogen bond is present in: a. oxygen molecule b. sodium chloride c. oxygen molecule d. water molecules
Published	10/01/2024	Oxidation of primary alcohol produces __________ and subsequently to the ________. a. ketone; aldehyde b. aldehyde; carboxylic acid c. methyl; ke…
Published	10/01/2024	Reduction of a ketone compound produces _ a. primary amine b. carboxylic acid c. none of the above d. alcohol
Published	10/01/2024	The bond type that involves unequal sharing of electrons is: a. hydrogen b. polar covalent c. ionic d. nonpolar covalent
Published	10/01/2024	The Cl—Cl bond is best described as___________. a. nonpolar covalent b. coordinate covalent c. ionic d. polar covalent
Published	10/01/2024	The Henderson-Hasselbalch equation: a. allows the graphic determination of the molecular weight of a weak acid from its pH alone. b. relates the pKa w…
Published	10/01/2024	The major carrier of chemical energy in all living cell is: a. DNA b. peptides c. ATP d. Inorganic phosphate
Published	10/01/2024	What is NOT TRUE about water? a. Water can solubilize all kinds of lipids b. Water does interact electrostatistically with polar sol…
Published	10/01/2024	What is produced when a primary alcohol reacts with a fatty acid? a. ester b. ketone c. ether d. ethane
Published	10/01/2024	What is the expected product for the hydrogenation of an alkene? a. ether b. alcohol c. alkyl halide d. alkane
Published	10/01/2024	What pairs of atoms in bases are involved in hydrogen bonds? a. O–H and P–O b. N–H and S–H c. N–H and O–H
Published	10/01/2024	What type of bond involves equal sharing of electrons? a. nonpolar covalent b. polar covalent c. ionic d. hydrogen bond
Published	10/01/2024	What type of bonds involves an interaction between a cation and anion?  a. nonpolar covalent b. polar covalent c. ionic
Published	10/01/2024	When an electron is added in the outermost shell of a chlorine atom it becomes:  a.  neutral b.  negatively charged c.  positively…
Published	10/01/2024	Which of the following formula describes the Henderson-Hasselbalch equation? Consider the buffer system is composed of the acid, HA, and …
Published	10/01/2024	Which of the following functional groups is common to both aldehyde and ketone? a. carbonyl group b. alcoholic group c. carboxylic acid group d. …
Published	10/01/2024	Which of the following is considered a covalent interaction? a. hydrogen bond b. carbon-carbon bond c. ionic bond d. hydrophilic interaction
Published	10/01/2024	Which of the following is produced when sodium salt of fatty acid is heated with sodalime?  a. alkane b. benzene c. alcohol d. …
Published	10/01/2024	Which of the following is the most electronegative element? a. Carbon b. Oxygen c. Hydrogen d. Nitrogen
Published	10/01/2024	Which of the following pair is used to make a buffer solution? a. a weak base and a weak acid b. a strong acid and a strong base c. a weak acid a…
Published	10/01/2024	Which of the following statements about buffers is true?  a. At pH values lower than the pKa, the salt concentration is higher than that of the a…
Published	10/01/2024	Which one of the following has the cellular components arranged in order of increasing size? START WITH THE SMALLEST ONE. a. protein < amino acid &…
Published	10/01/2024	T/F: Water does interact electrostatically with polar solutes.
Published	10/01/2024	T/F: Water does not interact electrostatically with polar solutes.
Published	10/01/2024	All of the amino acids that are found in proteins, EXCEPT for proline, contain a(n): a. methyl group b. thiol group c. ester group d. free amino …
Published	10/01/2024	Amino acids are ampholytes because they can function as either a(n):  a. standard and nonstandard monomer in proteins b. acid or a base c. p…
Published	10/01/2024	An octapeptide composed of four repeating glycine and alanine units has:  a. one free amino group on a glycine residue and one free carboxyl…
Published	10/01/2024	Analyze the following two peptide sequences and choose THE CORRECT STATEMENT: Peptide 1: Tyr-Gly-Gly-Phe-Leu  Peptide 2:  Leu-Phe-Gly-Gly-Ty…
Published	10/01/2024	At pH 7.0, converting a glutamic acid to gamma-carboxyglutamate, will have what effect on the overall charge of the protein containing it? (This react…
Published	10/01/2024	At the isoelectric pH of a decapeptide:  a. contains five positive, four negative charges and one neutral side chain containing amino acid b. the…
Published	10/01/2024	At the isoelectric pH of a tetrapeptide:  a. the total net charge is zero b. there are four ionic charges c. one positive and one negative c…
Published	10/01/2024	For amino acids with neutral R group, at any pH below isoelectric pH (pI) of the amino acid, the population of amino acids in solution will have: a. n…
Published	10/01/2024	Identify the achiral molecule.  a. histidine b. histidine c. glycine d. proline
Published	10/01/2024	In a very high basic solution, pH = 13, the dominant form of alanine would have a. no net charge b. a net negative charge c. a net positive charg…
Published	10/01/2024	Interactions between side chains of Aspartate and Arginine at neutral pH would be? a. covalent b. hydrophobic c. ionic d. hydrogen b…
Published	10/01/2024	Oxidation of two cysteine molecule can form a. a sulfhydryl group b. a disulfide bond c. two sulfhydryl group d. a hydroxyl group
Published	10/01/2024	Tertiary structure of a globular protein is determined by:  a. the number of disulfide bonds present b. the number of alpha helical structur…
Published	10/01/2024	The charge of glycine when the pH is < 2.0 is __________. a. - 2 b. + 2 c. - 1 d. + 1
Published	10/01/2024	The formation of a peptide bond between two amino acids is an example of a(n):   a. condensation reaction  b. group transfer react…
Published	10/01/2024	The net electrical charge of glycine below its isoelectric pH would be:  a. + 2 b. + 1 c. - 1 d. - 2
Published	10/01/2024	What charged group(s) is/are present in glycine at a pH of 7? a. –COO– b. –NH2+ c. –NH3+ d. Both –NH3+ and –COO–
Published	10/01/2024	What would be the net charge present in a tetrapeptide at its isoelectric pH?  a. the total net charge is zero b. one positive …
Published	10/01/2024	Which amino acid can form disulfide linkage? a. Cystine b. Methionine c. Arginine d. Proline e. Cysteine
Published	10/01/2024	Which amino acid does not have a chiral carbon?  a. Glutamine b. Alanine c. Glycine d. Glutamate
Published	10/01/2024	Which amino acid has a side chain that contains nitrogen? a. Cysteine b. Tyrosine c. None of the above d. Serine
Published	10/01/2024	Which amino acids contain reactive aliphatic hydroxyl groups? a. serine and methionine b. methionine and threonine c. cysteine and threon…
Published	10/01/2024	Which of the following amino acids among the 20 standard L-amino acids IS NOT optically active?  a. Glutamate b. Lysine c. Glycine d. Glutam…
Published	10/01/2024	Which of the following amino acids can be N-glycosylated? a. Asparagine b. Cysteine c. Alanine d. Serine
Published	10/01/2024	Which of the following amino acids can be O-glycosylated? a. Asparagine b. Cysteine c. Alanine d. Serine
Published	10/01/2024	Which of the following amino acids contains a hydroxyl group?  a. Serine b. Cysteine c. Methionine d. Histidine
Published	10/01/2024	Which of the following amino acids contains a positively charged R-group?  a. Arginine b. Methionine c. Alanine d. Valine
Published	10/01/2024	Which of the following amino acids contains an amide group? a. Asparagine b. Glutamate c. Glycine d. Lysine
Published	10/01/2024	Which of the following amino acids contains an aromatic ring ? a. Tryptophan b. All of the above c. Phenylalanine d. Tyrosine
Published	10/01/2024	Which of the following amino acids contains an aromatic ring and also a hydroxyl group? a. Tyrosine b. Serine c. Tryptophan d. Phenylalanine
Published	10/01/2024	Which of the following amino acids is a basic amino acid? a. Lysine b. Glutamate c. Glycine d. Aspartate
Published	10/01/2024	Which of the following amino acids is a branched chain amino acid? a. Valine b. Cysteine c. Methionine d. Alanine
Published	10/01/2024	Which of the following amino acids is a branched chain amino acid? a. leucine b. cysteine c. glycine d. alanine
Published	10/01/2024	Which of the following amino acids is a branched chain amino acid? a. Proline b. Isoleucine c. Arginine d. Alanine
Published	10/01/2024	Which of the following amino acids is an acidic amino acid? a. Glutamate b. Lysine c. Glutamine d. Asparagine
Published	10/01/2024	Which of the following amino acids would most likely be soluble in a nonpolar solvent such as benzene? a. valine b. aspartic acid c. arginine d. …
Published	10/01/2024	Which of the following compounds synthesizes an amino acid that can be used to make human proteins? a. D-alanine b. L-glyceraldehyde c. D-glycera…
Published	10/01/2024	Which of the following is a dipeptide? a. cystine b. leucine c. alanylglycylarginilyl d. histidine
Published	10/01/2024	In a very high basic solution, pH = 13, the dominant form of glycine would have  a. a net positive charge b. a net negative charge c. no net…
Published	10/01/2024	A average protein will not be denatured by:  a. pH 1 b. a detergent c. heating at 100 degree Celsius d. heating by 37 degree Celsius
Published	10/01/2024	A prosthetic group of an enzyme protein is a non-protein or non-amino acid structure that is: a. transiently bound to the enzyme protein b. a part of …
Published	10/01/2024	All of the following is considered as the "weak" interactions in proteins, EXCEPT:  a. hydrogen bonds b. peptide bonds c. hydrophobic intera…
Published	10/01/2024	Amino acid residues commonly found in the beta-turn of the beta-pleated sheet of proteins are: a. Alanine and valine b. Proline and glycine c. Ar…
Published	10/01/2024	As the partial pressure of carbon dioxide increases, the affinity of oxygen binding to hemoglobin  a. increases b. decreases
Published	10/01/2024	Changes in hemoglobin’s oxygen affinity are primarily the result of changes in the _________ structure of the protein. a. tertiary b.&nbs…
Published	10/01/2024	Fetal hemoglobin contains: a. two alpha and two beta polypeptide chains b. two beta and two gamma polypeptide chains c. two alpha and one gamma polype…
Published	10/01/2024	How many peptide bonds are present in the following peptide:                         …
Published	10/01/2024	Identify the acidic amino acids from the following peptide: ala-gly-met-lys-pro-lys-lys-glu-trp-asp-gly-asp-tyr a. glu and met b. gly and as…
Published	10/01/2024	Identify the pair of basic amino acids from the following peptide: ala-gly-met-lys-pro-lys-lys-glu-arg-asp-gly-asp-tyr a. glu and asp b. tyr and …
Published	10/01/2024	In an aqueous solution, protein conformation is determined by two major factors.  One is the formation of the maximum number of hydrogen bonds.&n…
Published	10/01/2024	In hemoglobin, the transition from T state to R state (low to high affinity) is triggered by a. polypeptide binding b. heme binding c. oxyge…
Published	10/01/2024	In hemoglobin, the transition from T state to R state (low to high affinity) is triggered by: a. Fe2+ binding b. subunit association c. oxygen bi…
Published	10/01/2024	In the binding of oxygen to myoglobin, the relationship between the concentration of oxygen and the fraction of binding sites occupied can best be des…
Published	10/01/2024	In the binding of oxygen to myoglobin, the relationship between the concentration of oxygen and the fraction of binding sites occupied can best be des…
Published	10/01/2024	In the binding of oxygen to myoglobin, the relationship between the concentration of oxygen and the fraction of binding sites occupied can best be des…
Published	10/01/2024	MACA: Identify the correct statements regarding the Bohr effect in hemoglobin.  a. The Bohr effect shifts the fractional O2 saturation …
Published	10/01/2024	MACA: Neuroglobin is a member of the globin family found in neurons. It is a monomeric protein that helps protect the brain from hypoxia (low O2)…
Published	10/01/2024	MACA: Which of the following is a role played by proteins? a. information signaling b. transport c. structural d. catalysis
Published	10/01/2024	Myoglobin is a  a. fibrous protein and soluble in water. b. fibrous protein and insoluble in water. c. globular protein and has quat…
Published	10/01/2024	Oxygen-hemoglobin saturation binding is: a. nonlinear and is not saturated b. hyperbolic c. noncoperative d. cooperative and produces a sigmoidal…
Published	10/01/2024	Peptide bonds in proteins have _________________ configuration for carbonyl and amino groups, except proline. a. cis b. trans
Published	10/01/2024	Saturable binding of oxygen to hemoglobin molecule  a. reflects negative cooperativity b. reflects positive cooperativity c. is an example o…
Published	10/01/2024	The fundamental cause of sickle cell disease is a change in the structure of: a. red blood cell b. myoglobin c. oxygen d. hemoglobin
Published	10/01/2024	The peptide alanylglutamylglycylalanylleucine has:  a. four peptide bonds b. five peptide bonds c. no free carboxyl group d. one disulfide b…
Published	10/01/2024	The peptide bond is also known as a(n) _ a. amide bond b. hydrogen bond c. ionic bond
Published	10/01/2024	The secondary structure of a protein involves:  a. peptide bond, and O-glycosylated amino acids b. all of the above c. alpha-helix, bet…
Published	10/01/2024	What is the Bohr effect? a. the regulation of hemoglobin binding by hydrogen ions and carbon dioxide b. the ability of hemoglobin to retain oxyge…
Published	10/01/2024	What is true about 2,3 bisphosphoglycerate? a. it cannot bind to deoxyhemoglobin b. it greatly increases oxygen binding affinity of hemoglobin c. it h…
Published	10/01/2024	What is true about adult form of hemoglobin?  a. it contains two alpha and two beta polypeptide chains b. it contains two alpha, one beta an…
Published	10/01/2024	Which amino acids are commonly found in beta-turn of the beta-pleated sheet of proteins? a. Alanine and cysteine b. Methionine and proline c…
Published	10/01/2024	Which amino acids are used to biosynthesize human proteins? a. D-amino acids b. L-amino acids
Published	10/01/2024	Which condition increases the release of oxygen into tissues?  a. decrease in carbon dioxide concentration b. none of the above c.&n…
Published	10/01/2024	Which of the following amino acid residues would most likely be buried in the interior of a water-soluble, globular protein? a. glutamate b. phen…
Published	10/01/2024	Which of the following conditions can completely and irreversibly denature an enzyme protein? a. Extremes of temperature, such as 100 degree Celc…
Published	10/01/2024	Which of the following conditions promotes the release of oxygen from the oxyhemoglobin in peripheral tissues? a. decrease in partial pressure of CO2 …
Published	10/01/2024	Which of the following describes the overall three-dimensional folding of more than one polypeptide? a. Quaternary structure b. Primary structure…
Published	10/01/2024	Which of the following describes the overall three-dimensional folding of a polypeptide? a. Secondary structure b. Primary structure c. Tertiary …
Published	10/01/2024	Which of the following forms of secondary structure of protein is most stable thermodynamically?  a. Right handed alpha-helices b. Left hand…
Published	10/01/2024	Which of the following is a pentapeptide? a. H2N-alanylglutamylglycyllysine-COOH b. Glu-Asp-Gln-Asn-Cys-Met c. alanylglutamylglycyll…
Published	10/01/2024	Which of the following is an example of a fibrous and insoluble protein? a. Insulin b. Hemoglobin c. Collagen d. Myoglobin
Published	10/01/2024	Which of the following is correct concerning the differences between hemoglobin and myoglobin? a. Hemoglobin exhibits a higher degree of O2 saturation…
Published	10/01/2024	Which of the following is not correct concerning 2,3-bisphosphoglycerate (BPG)?  a. It binds with lower affinity to fetal hemoglobin th…
Published	10/01/2024	Which of the following is the example of a protein containing a quaternary structure? a. beta-globin polypeptide chain b. Hemoglobin c. alpha-glo…
Published	10/01/2024	Which of the following is true about myoglobin? a. It is present in muscle tissue b. all of the above are correct c. Its major function is to sto…
Published	10/01/2024	Which of the following proteins has the highest affinity for oxygen?  a. Myoglobin b. Hemoglobin c. Collagen d. Albumin
Published	10/01/2024	Which polypeptide chain of hemoglobin is mutated in sickle cell anemia? a. all of the above b. alpha globin chain c. beta globin chain d. gamma g…
Published	10/01/2024	Which two functional groups of the amino acids interact to form peptide bonds? a. alpha-carboxylic acid group and alpha-amino g…
Published	10/01/2024	_______________ refers to the spatial arrangement of subunits and the nature of their interactions. a. tertiary structure b. primary structure c. seco…
Published	10/01/2024	A 10-year-old boy presents with vomiting, sweating, drooling and a decreased heart rate. His friends state that he was in a corn field when it was spr…
Published	10/01/2024	A biochemical reaction is indicated as X + Y = B + C. ΔG0 of the reaction in which products, B and C, are produced is - 50 kJ/mol. Under standard…
Published	10/01/2024	A metabolic pathway proceeds according to the scheme, R → S → T → U → V → W.  A regulatory enzyme, X, catalyzes the first reaction in the pathway…
Published	10/01/2024	A small molecule that decreases the activity of an enzyme by binding to a site other than the catalytic site is termed a(n):  a. allosteric …
Published	10/01/2024	An enzymatic reaction: a. increases the activation energy of a chemical reaction b. decreases the rate of a chemical reaction c. none of the above d.&…
Published	10/01/2024	An enzyme catalyzes the formation of glyceraldehyde 3-phosphate from dihydroxyacetone phosphate. Which class of enzyme is used to catalyze this reacti…
Published	10/01/2024	An enzyme that catalyzes the intramolecular movement of a functional group from one carbon atom to another would be called a(n) _ a. oxidoreductase b.…
Published	10/01/2024	An oxidoreductase class of enzyme can be used for the conversion of:  a. a ketone to triglycerides b. glutamic acid to glutamine c. ethyl al…
Published	10/01/2024	An oxidoreductase class of enzyme can be used for the conversion of:  a. an carboxylic acid to its corresponding amine b. acetic acid to ace…
Published	10/01/2024	Biosynthesis of ATP is:  a. a methylation process b. an endergonic reaction c. a dephosphorylation reaction d. an exergonic reaction
Published	10/01/2024	Both water and glucose share an —OH that can serve as a substrate for a reaction with the terminal phosphate of ATP catalyzed by hexokinase.  Glu…
Published	10/01/2024	Endergonic reactions a. has positive ΔG values  b. has negative ΔG values  c. are in equilibrium d. none of the above is TRUE
Published	10/01/2024	Endergonic reactions a. absorbs heat energy b. are in equilibrium c. drives the reaction in a backward direction d. drives the reaction in a forw…
Published	10/01/2024	Enzymes accelerate the rate of a chemical reaction by ____________ the free energy of activation of the reaction. a. increasing b. lowering
Published	10/01/2024	Enzymes differ from other catalysts in that only enzymes:  a. display specificity toward a single reactant. b. are not consumed in the react…
Published	10/01/2024	Exergonic reactions a. absorbs heat energy b. drives the reaction in a backward direction c. drives the reaction in a forward direction d. are in…
Published	10/01/2024	Exergonic reactions: a. has positive ΔG values b. are in equilibrium c. none of the above is TRUE d. has negative ΔG values
Published	10/01/2024	Glycolytic pathway is: a. exergonic b. endergonic
Published	10/01/2024	How Michaelis constant is related to the reaction velocity in a typical standard enzymatic reaction? a. Km is total concentration of the product forme…
Published	10/01/2024	Hydrolysis of ATP  a. is an endergonic reaction b. releases energy c. None of the above d. absorbs energy
Published	10/01/2024	Identify the coenzyme from the following:  a. biotin b. manganese ion c. sodium ion d. hemoglobin
Published	10/01/2024	Identify the inactive coenzyme from the following:  a. Fe3+ b. ATP c. Tryptophan d. Riboflavin
Published	10/01/2024	If the ΔG0 of the a reaction in which C is producing B is - 50 kJ/mol, under standard conditions the reaction: a. will never reach equili…
Published	10/01/2024	In a plot of l/V against 1/[S] for an enzyme-catalyzed reaction, the presence of a competitive inhibitor will alter the:  a. Vmax. b. curvature o…
Published	10/01/2024	In competitive inhibition of an enzyme catalyzed reaction the inhibitor binds: a. only to the enzyme-substrate product complex b. covalently to the en…
Published	10/01/2024	In this type of inhibition, the inhibitor can only bind to the ES complex to form an ESI complex. a. noncompetitive b. uncompetitive c. irreversi…
Published	10/01/2024	It was found that a reversible inhibitor and a substrate bind an enzyme, but at different sites. The inhibitor was quite potent at reducing enzyme act…
Published	10/01/2024	Michaelis constant is best described as: a. substrate concentration at 1/4 the of the Vmax b. the total concentration of the product formed at Vmax c.…
Published	10/01/2024	Molecule X is phosphorylated by ATP. Identify the class of enzyme used in this reaction. a. isomerase b. transferase c. oxidoreductase d. ligase
Published	10/01/2024	In a biochemical reaction ATP is used to generate mevalonate phosphate from mevalonate. Identify the class of enzyme used in this reaction. a. isomera…
Published	10/01/2024	One of the enzymes involved in glycolysis, aldolase, requires Zn2+ for catalysis.  Under conditions of zinc deficiency, when the enzyme may …
Published	10/01/2024	One of the enzymes involved in lactic acid formation is lactate dehydrogenase (LDH). LDH requires Zn2+ for catalysis.  Under conditi…
Published	10/01/2024	Phenylmethylsulfonylfluoride (PMSF) inactivates serine proteases by binding covalently to the catalytic serine residue at the active site; this enzyme…
Published	10/01/2024	Specific activity of an enzyme is defined as: a. concentration of the product formed per unit time per unit concentration of the enzyme protein b…
Published	10/01/2024	The concept of “induced fit” refers to the fact that: a. enzyme-substrate binding induces movement along the reaction coordinate to the transition sta…
Published	10/01/2024	The overall process of glycolysis is:  a. endothermic b. exergonic c. reductive d. endergonic
Published	10/01/2024	Thermodynamics considers exergonic reactions a. have positive ΔG values  b. have negative ΔG values  c. none of the above …
Published	10/01/2024	What conclusion can be drawn concerning an inhibitor if the KM is the same in the presence and absence of the inhibitor? a. The inhibitor binds to the…
Published	10/01/2024	What happens to the Km in an enzyme-catalyzed reaction in the presence of an uncompetitive inhibitor? a. none of the above b. Km dec…
Published	10/01/2024	What happens to the Vmax in an enzyme-catalyzed reaction in the presence of a competitive inhibitor?  a. Vmax can't be calculated from this …
Published	10/01/2024	What is correct relationship of changes in Gibbs free energy with changes in enthalpy and entropy? a. ΔG = ΔH + TΔS b. ΔG = ΔH - TΔS c. G = H - T…
Published	10/01/2024	What IS TRUE about an enzyme-catalyzed reaction? a. an enzyme does not alter the rate of a chemical reaction b. an enzyme increases the activation ene…
Published	10/01/2024	What is TRUE about Gibbs Free energy? a. ΔG depends on the concentrations of the substrate only  b. ΔG depends on the concentra…
Published	10/01/2024	What IS TRUE about the binding of an inhibitor to an enzyme during a competitive type of enzyme-catalyzed reaction?  a. inhibitor binds covalentl…
Published	10/01/2024	What is TRUE in a biodegradation pathway? a. exergonic reactions and endergonic reactions are coupled b. exergonic reactions and endergonic react…
Published	10/01/2024	What would be the effect of increasing concentration of substrate upon the reaction velocity in an enzyme-catalyzed reaction BEFORE the e…
Published	10/01/2024	What would be the function of a decarboxylase enzyme? a. Add a carboxylic acid group b. Remove all the carbons from the substrate molecul…
Published	10/01/2024	When the ΔG > 0, the reaction is said to have: a. Keq > 1 b. Keq < 1 c. Keq = 1 d. Keq = 0
Published	10/01/2024	Which class of enzyme is used in the conversion of ethyl alcohol to acetic acid? a. isomerase b. transferase c. oxidoreductase d. phosphorylase
Published	10/01/2024	Which of the following conditions in an enzyme-catalyzed reaction best describes  [S] > Km? a. reaction velocity is near Vmax b. reaction…
Published	10/01/2024	Which of the following enzymes can be used for an oxidation reaction?  a. oxido-reductase b. oxygenase c. all of the above d. dehydrogenase
Published	10/01/2024	Which of the following is a coenzyme? a. manganese ion b. biotin c. sodium ion d. ATP
Published	10/01/2024	Which of the following is true under these conditions: The enzyme concentration is 0.0005 mM, the substrate concentration is 5 mM, and the KM is 0.005…
Published	10/01/2024	Which of the following statements about a plot of V0 vs. [S] for an enzyme that follows Michaelis-Menten kinetics is false?  a.&nbsp…
Published	10/01/2024	Which of the following statements about an enzyme-catalyzed reaction is FALSE? a. The free energy of the product must always be greater than…
Published	10/01/2024	Which of the following statements about enzymes is NOT TRUE? a. Enzymes form activated intermediate complex/complexes with the reactants b. Enzymes lo…
Published	10/01/2024	Which of the following statements best describes Michaelis constant? a. Km is the substrate concentration at 1/4 th of the Vmax b. Km is the conc…
Published	10/01/2024	Which one of the following is not among the six internationally accepted classes of enzymes? a. Isomerases b. Hydrolases c. Oxidoreductases d. Po…
Published	10/01/2024	Which type(s) of enzyme inhibition can be reversed?  a. competitive b. all of the above c. non-competitive d. un-competitive
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