*Which of the following statements about allosteric enzymes is NOT true? Question 10 options: - They are regulated by positive and negative modulators - They have more than one native conformation - Their activity is altered by phosphorylation - They often catalyse a reaction at the beginning of a metabolic pathway please explain than give answer
Q: A polypeptide with a net positive charge at physiologic pH (~7.4) most likely contains amino acids w...
A: are non-polar. Doesn't contribute to charge o the polypeptide.
Q: An a strain of yeast that cannot switch mating type isisolated. What mutations might it carry that w...
A: Yeast is a kind of organism that lives Saccharomyces cerevisiae is a single-celled eukaryote that ma...
Q: Compare and contrast antibiotic and antiviral treatments. Analyze how different antiviral therapies ...
A: Antibiotics are the group of antimicrobial substances which are used to inhibit or to destroy any mi...
Q: III. True or False a. Large proteins travel/migrate faster in both gel filtration chromatography a...
A: Different techniques used in the separation and purification of the biomolecules are, Chromatography...
Q: What is the importance of central dogma
A: DNA contains genetic information in the form of nucleotide sequences. DNA is composed of four differ...
Q: Using linear regression analysis, determine the values of Vmax and Km of the enzyme in the ab- sence...
A: Enzymes are highly specialized proteins that have extraordinary catalytic power, greater than that o...
Q: structure of phenol derivatives @ #6-9,
A: Phenol derivatives are found with important activity such as an antioxidants, anti-cancer, disinfeci...
Q: Test Done and Result Carbohydrate Identity Molisch test Seliwanoff's test Benedict's test Barfoed's ...
A: Carbohydrates or carbs are maconutrient consisting of Carbon, hydrogen and oxygen atoms. In nature t...
Q: Which statement is true about GLUT1? GLUT1 transports glucose into erythrocytes against a concentrat...
A: Glucose transport is carried out by different transporters which are expressed in different forms in...
Q: We have described an ATP synthase complex with an Fo complex of 9 c-subunits. Consider if the F0 com...
A: In order to solve this problem, first we need to identify the reaction catalyzed by the enzyme β-hyd...
Q: What are the general characteristics of the primary, secondary, tertiary, and quaternary structure o...
A: Proteins are unbranched polymers constructed from 22 standard amino acid. They have four levels of t...
Q: -Inhibitor +Inhibitor [S] (mM) Vη&νβσπ:(μmol/sec). V0&νβσπ&ν βσπ (μmol/sec) 0.0001 33 17 0.0005 71 5...
A: Km is the michaelis menton constant which is a substrate concentration at half Vmax. This can be obt...
Q: why is there glucose 6-phospI n the ER lumen A. Glycogenolysis occurs in the ER lumen. B. It prevent...
A: Introduction: Glycogenolysis is the catabolism of glycogen to form glucose. The glycogen branches ar...
Q: The first loss of carbon in the metabolism of glucose takes place as CO2, in the formation of ______...
A: Glucose metabolism occurs in three stages. They are 1) Glycolysis 2) TCA cycle 3) Oxidative phosphor...
Q: separating gel
A: here they talk about ion exchange chromatography and electrophoresis. Ion exchange chromatography (I...
Q: e overall outcome of the light reaction
A: here we have been asked what is the overall outcome of light reaction that occurs during photosynthe...
Q: Branched polysaccharides will be more viscous than linear polysaccharides. True False
A: The molecular formula of glucose is C6H12O6. Glucose is a building block of disaccharides like ...
Q: describe the structure of citronellal and citronellol
A: Terpenoids also known as isoprenoids are organic compounds which belong to the plant secondary metab...
Q: What is the Keq for the conversion of Glucose 6-Phosphate to Glucose 1-Phosphate if the phosphate tr...
A: Given- 1) Potential for Glucose 1-phsophate.- 20.9KJ/mol 2) potential for Glucose 6-Phosphate- -13....
Q: 25. What would be the new pH of a 1L buffer solution (pH=7.8) upon the addition of 3mL O.0001 M HCI....
A: The new pH of a 1L buffer solution (pH=7.8) upon the addition of 3mL 0.0001 M HCI. (Buffer, pka=7.2)...
Q: Please describe the biochemical processes involving hemoglobin and carbonic acid buffer system when ...
A: Buffer solutions are extremely important in biology and is necessary for the maintenance of physiol...
Q: 20. Beta-oxidation of fatty acids takes place at A. peroxisome B. mitochondria C. mitochondria and p...
A: Beta oxidation of fatty acid - Process via which the fatty acids get broken down for energy producti...
Q: Kinesin-1 was the first member of the kinesin superfamily to be identified and therefore is perhaps ...
A: Kinesin are one of the mejor cytoplasmic motors responsible for long range transport in all eukaryot...
Q: least likely affected by changes
A: The three-dimensional arrangement of atoms in an amino acid-chain molecule is known as protein struc...
Q: CH,OH Он ÓH ÓH
A: The cyclic forms of carbohydrates can exist in different configuration based on the position of the ...
Q: Make a rough drawing of the ATP synthase machinery within the mitochondrial membrane and specificall...
A: F1F0-ATP synthase helps in synthesis of ATP in mitochondria. Proton influx into cytoplasm of mitocho...
Q: Linolenic acid and Linoleic acid, the essential fatty acids, are respectively, * A. 16:1 and 18:1 ...
A: Linolenic acid and Linoleic acid:- both are essential fatty acids ( makes hormones, regulate immune ...
Q: 8 10 4 1 O SSDNA O All Polynucleotides QUESTION 6 The carbon labeled in the structure below is the 3...
A: The given structure indicates an ATP nucleotide. Nucleotides are the basic structural units of a nuc...
Q: Derive the amino acid sequence that is coded for by each of the following mRNA sequence. 5' CAA GA...
A: Amino acid are molecules which are combine to form a protein molecules.Amino acid are synthesized by...
Q: If you have to prepare 4 nM solution of human IgG ( immunoglobuline) which has molecular mass of 150...
A: The number of moles of a solute present in one liter of the solution is called the molarity of that ...
Q: Given the following reaction, identify the class and subclass of the enzyme involved. ÇH2OH CH2OPO,²...
A: The enzymes can be classified based on the type of reaction that is catalyzed. The enzyme classes ar...
Q: Which of the following contain a correct first statement and an incorrect second statement? Be...
A: G proteins consist of the alpha, beta and gamma receptors for activating the cell signaling mechanis...
Q: For beta-oxidation of an 18:1 oleate mono-unsaturated fatty acid: - How many Acetyl CoA produced? - ...
A: Fatty acids are molecules with hydrocarbon chain and carboxylic acid group. In the absence of glucos...
Q: Why does it make sense that under conditions of low ATP levels in the cell the pyruvate carboxylase ...
A: Pyruvate carboxylase (PC) is a ligase class enzyme which catalyze the irreversible carboxylation of ...
Q: Directionality of Polynucleotide chains originates at the ____ end, and terminates at the _____ en...
A:
Q: The 6C14 can be substituted for 6C12 in chemical reactions in a cell because it has: (It's not Radio...
A: Carbon is an element abbreviated as C with atomic number 6. It belongs to the 14th group in the peri...
Q: Suppose you want to determine if excessive lipid ingestion altersgene transcription. Describe and ex...
A: Dietary fat is a crucial macronutrient for the increase and development of all organisms. In additio...
Q: Which of the following statements are TRUE? Multiple answers:Multiple answers are accepted for thi...
A: In given Questions many statement given about glycolysis cycle.Glycolysis is the metabolic pathway t...
Q: Among these amino acid combinations listed above, only the combination of Lys and Glu have side chai...
A: The tertiary structure of proteins are stabilized by non covalent interactions like hydrogen bonding...
Q: Failed to follow
A: Waxes are a broad category of organic compounds that are lipophilic and bendable solids at room temp...
Q: The lock-and-key theory described the action of ______. Select one: a. enzymes as locks that fit oth...
A: Lock-and-key theory describes the formation of an enzyme substrate complex. The complementarity betw...
Q: 2. The kinetic effect of purely competitive inhibitor of an enzyme: (A) Increases K without affectin...
A: Hi. Thank you for the question. As per the honor code, we are allowed to answer three sub-parts at a...
Q: The transcription of a gene called YFG (your favoritegene) is activated when three transcription fac...
A: An enhanceosome is a group of trans-acting factors that assemble at an enhancer region of a gene to ...
Q: Given a Glucuromic acid omd glutathione for A) are impartantto PhaseI xemabistic melabolism B) srond...
A: Glucuronic acid is a sugar carboxylic acid which is generated by the oxidation of the C-6 carbon of...
Q: I. True or False a. The beta-pleated sheets are formed by H-bonds among adjacent regions of the pe...
A: A. FALSE - The beta-pleated sheets are formed by H-bonds between neighbouring strands.
Q: You are studying the rate of transcription of a particular eukaryotic gene. When the DNA located sev...
A: Transcription is copy of genetic information from DNA to RNA. Eukaryotic transcription is more compl...
Q: In kappa and iota carrageenans, gels are formed through double helical formation of two polysacchari...
A: Carrageenans are polysaccharides comprised of repeating disaccharide units of sulfate derivatives ga...
Q: Explain the principle involved in blood typing.
A: The most significant blood typing is based on ABO groups, though 20 different blood groups are known...
Q: The molecule shown below is NH2 HO N. Но но
A: Deoxyribonucleic acid (DNA) is a molecule comprised of two polynucleotide chains that wrap around ea...
Q: lysozyme was purified through G50 beads. From your lab experience, you can determine that when going...
A: Chromatography is biochemical separation method for organic molecules or solutes of a compound so...
*Which of the following statements about allosteric enzymes is NOT true? Question 10 options: - They are regulated by positive and negative modulators - They have more than one native conformation - Their activity is altered by phosphorylation - They often catalyse a reaction at the beginning of a
please explain than give answer
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- Which class of enzymes have sigmoid or S-shaped plots of the rate of a reaction, v, versus the substrate concentration, [S], instead of the hyperbolic curves of the Michaelis-Menten equation? transferases holoenzymes O hydrolases O allosteric enzymes O ribozymesDiscuss in a short paragraph (3–5 sentences for each mutation) whether or not the enzyme is likely to completely lose catalytic activity if the following mutations are carried out. You may assume that steric effects do not distort the active site so much that catalysis cannot take place; focus your analysis on discussing the chemistry the amino acid side chains are able to perform and the properties that enable them to do so. Mutation 1: H to E Mutation 2: H to N Mutation 3: S to D Mutation 4: S to CWhich of the following statements regarding enzymes and transition states is true? stabilization of the transition state must be less than stabilization of ES for catalysis to occur binding of substrate to an enzyme often causes strain, thus promoting transition state formation the transition state conformation of an enzyme catalyzed reaction is identical to the conformation seen in the uncatalyzed transition state formation of the transition state always assures that the reaction will proceed to product none of the above are true
- Which of the following statements regarding enzyme catalysis is false? All options are false. Once formed, the transition state slowly proceeds to forming the product at a rate determined by cofactor binding The free energy of binding of the enzyme to the transition state is more favorable than the free energy of binding of the enzyme to the substrate The substrate and active site of the enzyme are solvated to promote enzyme-substrate interaction Once formed, the product dissociates from the enzyme after ATP hydrolysis in order to regenerate the active siteConsider two enzymes catalyzing two reactions (A --> B --> C ) in a metabolic cascade with their properties summarized below: Keg (for reaction) Enzyme Reaction KM Kcat / KM 102 M-1s-1 108 M-1s-1 1 A --> B 1 1 mM 2 B --> C 10 10 mM Initial concentrations are [A] = 0.1 mM and [B] = [C] = 0 and both enzymes are present at concentrations of 1 mM. After waiting for 1 ms, the concentrations of A, B, and C are measured. How do you expect the concentrations to be ordered? O [B] > [A] > [C] O [C] > [B] > [A] O [A] > [B] > [C] O [A] > [C] > [B] [C] > [A] > [B]Which of the following statements are true about enzyme regulation via noncovalent interactions? Select all that apply. Molecules can cause a change in enzyme shape because they're able to bind to the enzyme somewhere other than the active site The function of an enzyme is altered by a chemical change in its primary structure, which is called phosphorylation Molecules that are similar to the substrate in both size and shape can compete with the substrate for access to the enzyme's active site Molecules that are similar to the substrate in both size and shape can compete with the substrate for access to a location other than the active site
- CH₂OH 애 H2COPO 2- ATP OH 1 애 애 어 애 The class of the enzyme catalyzing the reaction shown in this figure is a(n) Choose the one best answer. ligase 매 +ADP 매A purely competitive inhibitor of an enzyme has which of the following kinetic effects? decrease in Km increase in Vmax decrease in Vmax increase in Km Question 60 The Michaelis-Menten constant (KM) has the following characteristics, EXCEPT: The dimension for KM is concentration, such as molarity It is equal to ½ of Vmax It is the substrate concentration necessary to reach ½ of VmaxCould you help me with a scheme following: Carboxylic acids do not readily undergo certain biochemical reactions; thus, they are often converted to thioesters or phosphonoesters for catalysis. What are two reactions that thioesters and phosphonoesters can undergo that carboxylic acids cannot? Show enzyme-catalyzed arrow pushing for both of these mechanisms.
- Another of the six enzyme classes is which of the following? enzymes catalyze. These classes include the transferases, isomerases, and ligases. All enzymes can be categorized in one of six major classes based on the reactions the proteases kinases hydrolases phosphatases endonucleases An important factor that influences the rate of a biochemical reaction is the temperature. Raising the temperature of a biochemical reaction has which effect upon the kinetics of the reaction? a) b) c) d) e) increases the free energy of the reactants increases the free energy of the transition state decreases the free energy of the reactants decreases the free energy of the transition state decreases the free energy of the productshich of the following are advantages of quaternary structure? Choose all correct nswers 1) The genes may be for single subunits, rather than requirement for transcription and translation of giant sequences 2) Subunit construction may provide the structural basis for protein regulation 3) Multi-subunit proteins are more water soluble than single subunit proteins of the same size 4) Defects in protein synthesis may be fixed at the subunit level, rather than giant polypeptide level 5) May have multiple active sites - one on each subunitAn allosteric enzyme that follows the concerted mechanism has a T/R ratio of 500 in the absence of substrate. Suppose that a mutation reversed the ratio. How would this mutation affect the relation between the rate of the reaction and substrate concentration? The mutant enzyme would behave like an enzyme that obeys Michaelis Menton kinetics. The mutant enzyme would have a smaller vmax There would be no difference in the mutant enzyme in terms of substrate binding and catalysis. More than one answer is correct. The mutant enzyme would display cooperativity more than the wild type. MacBook Air 888 F5 F4 F3 F2 %23 2$ %