From which biosynthetic pathway is eugenol derived? O A. mevalonic acid OB. shikimic acid O C. mixed biosynthesis O D. acetate
Q: INFLUENCE OF FREE ACID tt #1 tt #2 tt #3 tt #4 CONDITION 4 mL 0.2% HCI + 1 mL starch paste + 1 drop…
A: Effect of saliva on starch: Saliva contains the digesting enzyme amylase, which breaks down starch.…
Q: 3. Given the following peptide sequence, GSICDNCR, the estimated net charge at the given pH is: a)…
A: Peptides: Organic substances known as amino acids include both amino and carboxylic acid functional…
Q: Which of the following are true about oxaloacetate? It can cross mitochondrial membranes It is an…
A: Glycolysis is a pathway which breaks down glucose into two three-carbon compounds and produces…
Q: How to calculate percentages of arginine have positively charge at PH=7
A: pH is the measure of H+ ion concentration ( denoted by [H+]) in the solution. High pH means low H+…
Q: RNA polymerase is found in the mitochondrial matrix. True False
A: The "powerhouses" of the cell are frequently referred to as mitochondria. They assist in converting…
Q: What is acid-base homeostasis?
A: Homeostasis is the ability of an organism to regulate its internal environment in varying external…
Q: 2. The attached figure is a titration curve for the amino acid glycine. At which pH is glycine…
A: Amino acids are biomolecules that have an amino group, a carboxyl group and a side group that is…
Q: The production of amino acids from proteins is an example of: a. a non-enzymatic reaction b.…
A: Proteins are large molecular weight polymers of amino acids with diverse biological functions. Many…
Q: 3. (a) The beakers below represent different conditions for measuring the initial velocity (vo) of…
A: Parameters such as Km and Vmax are used for comparing enzyme activities. If we know the initial rate…
Q: impact on the number of electron carriers used by the electron transport chain? Select one: The…
A: Introduction Cellular respiration is of two types: aerobic respiration and anaerobic respiration.…
Q: 7. H 1 H-C -OH H-C-OH 1 H -C 8. H 9. НО I 1 H J=D 0=)) с HIV-H OH HH -C-C-H I OH OH F-DIE-DI - CH…
A: 7. Chemical formula for structure number 7. = C4H8O4 or C4(H2O)4. Yes, this structure is a…
Q: Fill in the blanks: In the peptide, LASALLEDASMA, (Write the full name of the amino acids) has the…
A: The amino acid composition of the given peptide is as follows:…
Q: Which of the following is correctly classified? O Arachidic (20:0) is a medium chain unsaturated…
A: Fatty acids are carboxylic acids with a hydrocarbon chain ranging from 4 carbon to 36 carbons. The…
Q: OH i ACP Suppose that a "snapshot" of FA synthase was taken and the above (drawn) intermediate…
A: The given reaction is from fatty acid biosynthesis that occurs in the cytoplasm. Fatty acid…
Q: Which form of fructose ,alpha or beta does take part in most biochemical reactions
A: Two-dimensional representation of cyclic structure of monosaccharides are called Haworth projection.…
Q: DNA: How PCR works and why it's useful?
A: PCR is dependent on the ability of DNA polymerase to generate a new strand of DNA that is…
Q: Which one of the following amino acids is phosphorylated during the process of promoter clearance by…
A: The transcription of genes leading to the synthesis of proteins inside the cells is carried out by…
Q: Sm When proteins are solubilized in inclusion bodies from an E Coli cell lysate, they are unfolded.…
A: Plasminogen is an important enzyme which is present in blood and degrades plama proteins like…
Q: Among the given statements, which ones correctly describe the commonality in dopamine and…
A: The adrenal gland secretes three catecholamines-dopamine, epinephrine and norepinephrine. Dopamine…
Q: I. Data A. Solubility in water Sample alanine glutamic acid arginine albumin B. Color Reactions of…
A: Amino acids are building blocks of proteins while proteins are polymers of amino acids. The…
Q: 5-45 A sample of an unknown peptide was divided into two aliquots, acid. One aliquot was treated…
A: Edman degradation method is used for the sequencing of polypeptide chains. For larger proteins the…
Q: 1. State if true or false a. Gluconeogenesis is the exact opposite of the glycolytic pathway b.…
A: Note: Hi! Thank you for the question. We are authorized to answer three subparts at a time. Since…
Q: 1. Glucagon is a hormone that involves in the regulation of carbohydrate homeostasis.…
A: Proteins are made up of amino acid residues linked via a peptide bond. A peptide bond between two…
Q: In biochemistry, what is definition of buffer , which amino acid can act as buffer? what is buffer…
A: The functioning of many molecules such as proteins, nucleic acids etc. depends on pH. The pH in…
Q: Glycolisis is process that is reversible, meaning that any product that is being formed can easily…
A: During the catabolism of amino acids, for it to be used as a respiratory substrate, first the alpha…
Q: xplain the indirect effect that allosteric effectors have on pyruvate dehydrogenase activity through…
A: The pyruvate dehydrogenase complex acts a a connection between glycolysis, the tricarboxylic acid…
Q: Which of the following laws of matter best describes the statements on sulfide minerals? Select one:…
A: INTRODUCTION : Sulfide minerals - They are a class of minerals consisting of sulfide or disulfide…
Q: H₂C-O-C-(CH₂) 16CH3 i HC-0- H₂C-O-C-(CH₂) 14CH3 (a) -(CH₂)7CH=CH(CH₂)7CH3 H₂C-O-C-(CH₂) 14CH3 요…
A: Fats and oils are triglycerides or triacylcylgerols. They are esters which three fatty acid are…
Q: Question 11 of 25 Among the given statements, which are characteristics of plant cells? Select the…
A: Osmosis is the process of net movement of water across a semipermeable membrane This transport…
Q: All are single-electron carriers EXCEPT: a. UQH2. b. Cyt bL. c. Cyt bH. d. Rieske protein…
A: The process electron transport chain requires four different complexes that are situated in the…
Q: Which of the different carbohydrate tests would give a positive result for maltose? Describe the…
A: Maltose is a disaccharide composed of 2 D-glucose molecules. The bonding pattern is α-1,4 . Hence…
Q: Mutual intermediates of catabolism of proteins, carbohydrates and lipids; their role in the…
A: Catabolism is the process of breaking down of complex compounds into simple molecules. The catabolic…
Q: Will disaccharides and polysaccharides give positive results in Molisch test? How?
A: Molisch’s test is a specific test for the identification of carbohydrates in a sample. The test uses…
Q: The degradation of nutrients for energy is also known as oxidative metabolism. True False
A: Metabolism is the total of all chemical transformation that takes place in a living cell. One…
Q: Name three metabolic processes in the cell that are enhanced and two that are inhibited in response…
A: Insulin is a peptide hormone that regulates blood glucose in levels in the body. It decreases the…
Q: 12. The graph shows values of arterial plasma bicarbonate concentration and pH for different persons…
A: Metabolic alkalosis is caused by acid base imbalance in the blood. It is characterised by increase…
Q: The activity of an enzyme can be regulated by a: A) competitive inhibitor binding to the active…
A: The enzymes increase the rate of biochemical reactions and can be regulated by binding to…
Q: A peptide has the following amino acid composition: 2 Met, 2 Phe, 2 Glu, 1 Arg, 1 Lys, 1 Val, 1 Leu,…
A: Recall that: Amino acid sequences are written with N-terminal amino acid on the left and C-terminal…
Q: Exergonic and endergonic biochemical reactions; the role of ATP and other macroergic substances in…
A: INTRODUCTION : ATP - Adenosine triphosphate, it is the main energy currency or units, which is…
Q: Many proteins that remain homogeneously distributed in water have molecular masses in the range of…
A: A colloid is a heterogeneous mixture in which the dispersed particles are intermediate in size…
Q: ● What are the three things we need to know in order to begin to understand the way an active site…
A: Enzymes are high molecular weight proteins that catalyse biochemical reactions. The substrate binds…
Q: What is the experimental procedure illustrated in the figure above? What label (1-3 words) would…
A: In the given diagram, some cutting and joining of DNA is shown. In the diagram, a specific gene…
Q: Cycle of tricarboxylic acids (TCA): • importance for cellular metabolism; • intracellular…
A: It is a step wise cyclic but complete oxidation and decarboxylation of of active acetate group to…
Q: 7. Isocitrate dehydrogenase is inhibited by ADP and activated by ATP. T F
A: Isocitrate dehydrogenase catalyzes the oxidative decarboxylation of isocitrate to…
Q: The side chain of asparagine contains: OA) a hydroxyl group OB) an amine group OC) a carboxyl group…
A: Proteins are composed of amino acids, which are bound together by peptide linkage. Amino acids…
Q: Phosphatidic acid phosphatase (PAP), also called lipin, converts phosphatidate to diacylglycerol…
A: Phosphatidic acid phosphatase (PAP) or lipin converts phosphatidate to diacylglycerol (DAG), while…
Q: What explains the 10,000 to 1 selectivity of the potassium channel for K+ over Na+ considering that…
A: Channels are membrane proteins that allow biomolecules or ions to pass through them. Ion selective…
Q: What is expected theoretical number of copies of DNA molecules after 28 cycles in a PCR experiment?…
A: INTRODUCTION: DNA : Its fullform is Deoxyribo nucleic acid and It has a double stranded helix…
Q: Initiation of transcription in prokaryotic cells requires not only RNA polymerase, but also an…
A: The sites of transcription on the DNA has three main regions viz., promoter region (upstream of the…
Q: Which of the following is not true about the properties of a peptide (amide) bond? a.The bond…
A: A peptide is a polymer of amino acid residues linked together via a peptide bond. The peptide bond…
Step by step
Solved in 3 steps with 1 images
- What are the description of the ff?A. Effect of pH with enzymaticactivity. Include example ofenzymes optimum pH.B. Effect of activators on theactivity of enzymes. Includeexamples.Explain the ABA biosynthesisProteases are one of the main drug targets. Choose the False statement regarding proteases. A. Proteases are enzymes that cleave peptide bonds. B. Water is a reactant in the reaction catalyzed by proteases. C. Proteases, like all enzymes show substrate specificity, meaning they cleave only substate that fit the bonding product. D. Proteases rely on the proton transfer from NADH to the substrate. E. Protease mechanism involves only acid-base catalysis.
- Complex III contains which cofactor as a prosthetic group? A. iron-sulfur clusters B. FAD C. FMN D. coenzyme Q E. copperA. Elastase is activated by trypsinB. Trypsinisactivatedbyelastase Which statement is correct? Proteolytic activation of chymotrypsin from chymotrypsinogen requires cleavage of four peptide bonds. Assume that any proteases can convert 100 substrates to 100 products. Activation of one enteropeptidase can eventually lead to formation of how many chymotrypsin proteins?A type Il beta turn has what residue as one of the four residues that make up the turn? OAP O B. G C.I O D.A O E. Q Once a substrate is bound to the active site, there are a variety of mechanisms that aid in the cleavage and formation of bonds. Thesa incudn. OA General acid base catalysis by amino acid side chains which can act as proton donors and acceptors. OB. Metal ion catalysis where tightly bound metal ligands can participate in cataus. Oc covalent catalysis where the enzyme forms transient covalent bonds with reactants and these bonds are later broken O D.all of the above E. only A and C The Ramachandran plot describes the peptide conformation by illustrating the position of the dihedral angles that can rotate following. OA side-chain steric hindrance B. restrictions imposed by secondary structure OC. main-chain clashes from the bulky carbonyl oxygen or amide nitrogen with other main-chain atoms or side-chains O D. All of the above E. None of the above
- Explain why catalase activity is lower at: i. Low temperature ii. High temperaturePenícillin is an esxample of what type of enzyme inhíbitor? A. Competitive B. Noncompetitive C. Uncompetitive D. Irreveralble What type of Inhíbition ia observed from the ahift of the Lineweaver-Burke plot ahown in the graph below where the solid line represents the uninhibited enzymatic reaction while the broken line represents the inhibited enzymatic reaction? A. Irreveraible inhibition B. Noncompetitive inhibition C. Competitive inhíbition D. Uncompetitive inhibition Potaszium cyanide ia a polzon which combines with cytochrome A3 to prevent binding of oxygen to the enzyme without altering the Km of the reaction with reapect to reduced cytochrome c. Which type of inhíbition does this represent? 9. A. Irreveraible inhibition B. Noncompetitive inhibition C. Competitive inhibition D. Uncompetitive inhibition Which of the following enzyme clesses catalyze reactions in which two molecules become diasociated from each other? 10. A. Kinase В. Нydrolaae C. Isomerase D. Ligase 1. Which of the…Define the following terms: a. thiolytic cleavage b. ketogenesis c. ketone bodies d. α-oxidation e. ACC
- Which statement on the biosynthesis of cannabinoids is NOT TRUE? Select one: O a. Geranyl pyrophosphate is formed as a precursor via the deoxyxylulose pathway in cannabis O b. Divarinic acid is the precursor for the production of propyl cannabinoid acids. O C. When prenyl-transferase enzyme uses olivetolic acid as substrate cannabigerivarinic acid (CBGVA) is formed. O d. THCA-synthase, CBDA-synthase, and CBC- synthase enzymes can use both CBGA and GBGVA as substrate.Bypass reaction in the anabolic pathway often occurs when A The ΔG of the reverse reaction in the catabolic pathway has a large negative value B The ΔG of the reverse reaction in the catabolic pathway has a large positive value C The ΔG of the reaction in the anabolic pathway is close to zero D The ΔG of the reaction in the anabolic pathway is positive E None of the above7. An enzyme-catalyzed reaction proceeds by the mechanism below: B. E+S1→ ES --2E+P E+A 3 EA EA+S4 EAS --5 EA + P E+I 6 EI EAS+I7 → EAIS -8 EIS + P K. macronutrient L. enzyme activator/cofactor M. liposome N. anaerobic process O. aerobic process E = enzyme, S = substrate, I = inhibitor, P = product and A = activator Rate constants (k's) for the forward reactions are: kı, k2, k3, k4, k5, k6, k7, and ks Rate constants (k's) for the reverse reactions are: k-1, k-3, k-4, k-6, and k-7 Write the enzyme balance for this mechanism. 4 How many total equations will result from applying the RAPID EQUILIBRIUM ASSUMPTION? Using any concentrations of species in the mechanism and any of the rate constants (k's), write ONE of the