QUESTION 25 In the serine protease catalytic mechanism, which of the following helps stabilize the tetrahedral intermediate? O low barrier hydrogen bond oxyanion hole aspartate side chain O histidine side chain
Q: Question 21 Which two of following confribute to the largo negative free unergy change upon…
A: Hydrolysis of high energy compounds release energy as hydrolysis involve the breaking of bonds that…
Q: QUESTION 5 Which of the following amino acids is most unlikely to be present in a beta sheet?…
A: In the β-pleated sheet, the sheet are formed due to hydrogen bonding between atoms on the peptide…
Q: Question 17 ( Here is a step from the citric acid cycle enzyme citrate synthase. His274 s-COA H-…
A:
Q: QUESTION 3 What initiates the reaction catalyzed by Trypsin? O The active site Histidine gives a…
A: Trypsin is an enzyme that is used to cleave the peptide bond. The enzyme specifically cleaves the…
Q: Question 4 a-D-galactose from B-D-glucose can be differentiated using which method of analysis? O…
A: Alpha - D - Glucose and Beta - D - Glucose are the two cyclic hemiacetal forms of D - Glucose, which…
Q: Question 24 The following statements best describe the RNA structure and/or function except A The…
A: RNA or ribonucleic acid composed of ribose sugar. The basic unit of RNA is the nucleotide.
Q: Question 4. You must cleave the following peptide into smaller fragments. How many peptides would…
A: Proteins are complex molecules formed by the polymerization of amino acid residues. Amino acids are…
Q: Question 17 Which of the following are true regarding proteins? Select all that apply. O the amino…
A: 2,3,6. Mild increase in temperature usually increases or maybe doubles the function of enzymes but…
Q: QUESTION 12.10 Identify each of the following biomolecules: H HN NH CH3 CH2 COA-S CH, CH, S-ACP R OH…
A: The biochemical processes occurring in the body go through different biosynthetic and regulatory…
Q: QUESTION 10 1. Which of the following sugars have B (1-4) glycosidic linkages? (1) The hereto…
A: β-1,4 glycosidic bond is formed by formation of covalent bonding of oxygen to the C1 of one glucose…
Q: Question 51 The direct sequence of amino acids as dictated by DNA is the quaternary primary…
A: INTRODUCTION Structure of protein The protein possess 4 structures as Primary, secondary, Tertiary…
Q: QUESTION 14 The pks of histidine for a-carboxylate =1.8, for a-amino =9.33; and for imidazole (side…
A: Amino acids are the molecules that join to form a protein structure. The bond formed between two…
Q: QUESTION 8 Amino Acids that carry a positive charge of +1 at pH 7 are (Think about it - don't rush…
A: When many amino acids are joined with each other by a peptide bond they form a…
Q: QUESTION 2 In the cyclic form, the compound produced by oxidation of an aldose is a hemiacetal. a…
A: The cyclic form of an aldose sugar is called hemiacetal. Examples of cyclic aldose sugars are…
Q: Question 10. All of the following are parts of a nucleotide EXCEPT: A. a five-carbon sugar. B. a…
A: Nucleotide is key structure for genetic material such as DNA. Nucleotide has three components, if…
Q: QUESTION 21 Which of the following describes an enzyme with only the amino acids present, without…
A: Enzymes are biocatalysts and they catalyze the biochemical reactions both in vivo as well as in…
Q: Question 9 What structural features are true regarding the transmembrane and cytoplasmic domains?…
A:
Q: QUESTION 8 Which one of the following is not among the six internationally accepted classes of…
A: Based on the reaction they catalyse enzymes have been categorised into 6 different classes.
Q: QUESTION NO. 1 L-Carnitine is synthesized primarily in the liver but also in the kidneys and then…
A: L-carnitine is generally synthesized in the kidney, which is transported to the other parts of the…
Q: QUESTION 16 The side chain of is most hydrophobic O valine O alanine lysine glycine serine
A: Amino acids are compounds containing carbon, hydrogen, oxygen and nitrogen. They serve as monomers…
Q: Question 12 Starting from glutamine + aspartate + glycine + CO2+ N10-formyl-THF + ribose-5-P: How…
A: The biosynthesis of purine
Q: Question 7 A sample was methylated and then digested, yielding a of 2,3-dimethylglucose and…
A: Glucose is a carbohydrate and it acts as the primary energy source for cells. Carbohydrates are…
Q: Question 19 N-glycosyltransferase attaches which sugar to the base oligosaccharide to synthesize the…
A: Antigen are present on the membrane of red blood cells. The presence of antigen determines the blood…
Q: Question 12 The disulfide bridges: A Are generated by an intra- or inter- molecular oxidation…
A: The disulfide bridges is a covalent bond. It is present in the protein.
Q: QUESTION 44 In which of the following proteases, a water molecule serves as the nucleophile, rather…
A: Question 44 Cysteine protease, Aspartyl proteases, Metalloproteases these are the three classes of…
Q: Question 9 Which of the following is TRUE of the branching reaction of glycogen? a) Each linear…
A: Glycogen is a glucose polysaccharide found in most mammalian and nonmammalian cells, as well as…
Q: QUESTION 22 Which of the following is NOT a difference with the twenty standard R-groups of amino…
A: 21. Amino acids are classified based on the "R" group (side chain). Amino acids have both amine and…
Q: QUESTION 20 How many amino acid side chains in this peptide are capable of absorbing light at 280nm?…
A: Aromatic amino acids such as tryptophan, tyrosine and phenylalanine absorb UV light. Aromatic…
Q: QUESTION 14 There are two possible mutations in spike protein; G76V and V180G. Which of these two…
A: The correct answer is (a) G76V
Q: QUESTION NO.1 which of the following are chemical characteristics of monosaccharides? A. They…
A: Carbohydrate is considered as the fuel, which helps to provide energy for sustaining all cellular…
Q: QUESTION 2 Most amino acids exist in the L-form because O Stereospecific binding is maximum in this…
A: Amino acid: Amino acids are the building block of proteins and there are about 300 amino acids…
Q: Question 8 Which of the following IS a Phase Il metabolic reaction? O Fornation of a ketone at a…
A: Question 8 ans: Phase l metabolism is when a parent drug is converted to polar active mrtabolite…
Q: QUESTION 14 Which of the following polysccharides have b (14) glycosidic linkages? (1) The…
A: Cellulose and chitin are two significant polymers found in nature. A polysaccharide called cellulose…
Q: QUESTION 18 Which of the following reactions is energetically favorable? O The formation of peptide…
A: As per the guidelines we are supposed to answer only the first question in case of multiple question…
Q: Question 6 Identify the three true statements related to pyrimidine synthesis: The initial steps of…
A:
Q: Question 10 In a fully formed and functional E. coli ribosome, what site is occupied by the…
A: In a fully formed and functional E. coli ribosome, what site is occupied by the fMet-tRNA Met during…
Q: QUESTION NO. 1 Targeting a protein to be degraded within proteasomes usually requires ubiquitin. In…
A: The proteins that are not correctly folded or not folded undergo proteolysis using the proteosomes.…
Q: QUESTION 1 The structure of an amino acid at pH 7 is shown below. This amino acid is most likely…
A: An amino acid's structure allows it to function as both an acid and a base. Because nearly all amino…
Q: Question 27 ( Which of the following is true of all amino acids? One single codon codes for each…
A: Amino acids are the building blocks for the proteins responsible for the biological functions within…
Q: QUESTION 1 What are the functions of metal ions in catalysis? Select all that apply. O a. increasing…
A: The answer of this question is option d that is increased binding energy. * Metal ion help in…
Q: Question 21 Among the following families of compounds, only one is never cyclic: A Aldohexoses B…
A: Sugars with 3 carbons called triose, with 4 carbons tetrose, with 5 carbons pentose and 6 carbons…
Q: QUESTION 10 Select a property that does not belong to allosteric enzymes. They conform to hyperbolic…
A: Allosteric control, in biochemistry, is the activity of an enzyme by connecting to its respective…
Q: Question 14 Concerning peptidases: A Endopeptidases recognize specific amino acid sequences within…
A: Peptidases are the protein digesting enzymes. They may be endopeptidase or exopeptidase.
Q: Question 15 Three of these are related to a nucleotide. Select the exceptions. O R group O pentose O…
A: A nucleic acid is a linear polymer of nucleotides that is a component of the cell's information…
Q: Question 34 The biosynthesis of amino acids can only be carried out by O nitrogen-fixing bacteria
A: Introduction The amino acids building material of proteins. Proteins and amino acids are the…
Q: QUESTION 1 The reaction initiating depolymerization of glycogen is: (n is the number of monomers in…
A: Carbohydrates are one of the major macromolecules needed for the growth and development of the…
Q: Question 19 Which of the following amino acids is not part of tetramer that is bounded to NAM and…
A: Answer--
Q: Question 24 Which of the following is correct regarding nucleotide structure? Removal of the…
A: Answer - option B.
Q: QUESTION 17 When two carbohydrates are epimers: one is a pyranose, the other a furanose. one is an…
A: Epimers are type of stereoisomers.
Q: QUESTION 1 What TYPE of inhibition is observed in the following plot: V KK [S], mM m Competitive…
A: Enzyme inhibition decreases the catalytic activity of the enzyme. Inhibition of the enzyme may be…
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- Examine the ActiveModel for alcohol dehydrogenase and describe the structure and function of the catalytic zinc center.Understanding the Mechanisms of Reactions Related to Transketolase The mechanistic chemistry of the acetolactate synthase and phosphoketolase reactions (shown here) is similar to that of the transketolase reaction (Figure 22.30). Write suitable mechanisms for these reactions.The enzyme that catalyzes reaction below can be classified as: CoO COO NAD+ NADH + H* Но- | malate -C- H-Ć- dehydrogenase Охaloacetate Malate isomerase lyase hydrolase oxidoreductase ligase transferase
- a What would be the appropriate name for an enzyme that catalyzes each of the following reactions: b H3C iOH OH NH₂ alanine ligase alanine oxidoreductase alanine isomerase alanine transferase OH H3C CH3 H3C NO₂ propanone transferase propan-2-ol hydrolase propan-2-ol oxidoreductase propan-2-ol isomerase OH H3C CH3The aspartate carbamoylase (ATCase) is an enzyme that catalyzes the reaction below utilizing the multi-substrate reaction strategy which requires aspartate to bind first and then carbamoyl phosphate. As the reaction progresses product, Pi leaves before carbamoyl aspartate. aspartate NH3 O NH₂ carbamoyl phosphate O Ping pong O Double displacement O Random sequential O Controlled sequential O Ordered sequential ATCase P₁ NH₂ carbamoyl aspartateWhich of the following statement is CORRECT? O Hydrolysis of starch into glucose in an elimination reaction Group transfer reaction is a nucleophilic substitution reaction Conversion of 3-phosphoglycerate to 2-phosphoglycerate is a group transfer reaction Most biochemical reaction occurs via homolytic cleavage Electrophiles are electron-rich, while nucleophiles are electron-deficient
- Which of the following statements regarding the catalytic mechanism of superoxide dismutase is true? The D residue does not participate in acid-base catalysis during the course of the catalyzed reaction All of the answers are true The coordinated Zn2+ participates in stabilizing Cu²+ in the reduction-oxidation reactions to consume O₂ The Cu²+ coenzyme is coordinated by H residues, positioning it precisely for consumption of 0₂ The overall reaction consumes two equivalents of O₂ and two proton equivalents in order to produces one equivalent H₂O2Which class of enzymes catalyzes the following reactions? CH2- CH2- CH2 H2- C- CH2 AST CH2-C CH2 CH-NH + C=O + C=0 + CH-NH ČO0 Čo0 ČO0 ČO0" Aspartate Oxoglutarate Oxaloacetate Glutamate Select one: a. Oxidoreductase O b. Isomerase O c. Ligase d. TransferaseThe glyceraldehyde-3-phosphate dehydrogenase reaction of glycolysis, (glyceraldehyde-3- phosphate → 1,3 bisphosphoglycerate) (Choose all that apply) O conserves energy by transfer of a proton H* to NAD+ forming NADH O has a high energy thioester intermediate on the enzyme/substrate complex O mechanistically uses covalent catalysis O conserves energy in the formation of a oxygen phosphoric ester O conserves energy in the formation of a carboxylic-phosphoric mixed anhydride O mechanistically requires the coenzyme thiamine pyrophosphate (TPP) to act as an electron sink
- The enzyme which catalyzes the reaction below belongs to which enzyme classification? Н.С— ОН HC=0 C=0 Н-С—ОН H,C-0-P-o- || H,C –0-P-0- O Transfera Hydrolase Isomerase OxidoreductaseWhich one of the following regarding the chemistry of glycolysis & gluconeogenesis is FALSE? Reaction 6 of glycolysis catalyzed by glyceraldehyde-3-phosphate dehydrogenase involves oxidation & addition of a P; group. Reaction 3 of gluconeogenesis catalyzed by enolase involves hydration, the addition of water to a carbon-carbon double bond (C=C) to form an alcohol. Reaction 1 of gluconeogenesis catalyzed by pyruvate carboxylase involves decarboxylation. Reaction 9 of gluconeogenesis catalyzed by fructose-1,6-bisphosphatase involves dephosphorylation (phosphoester hydrolysis). Reaction 1 of glycolysis catalyzed by hexokinase involves phosphorylation (using ATP). O 0000Handwritten Identify the molecule names, enzyme name, enzyme classification and change in reaction(for glycolysis pathway)