The production of amino acids from proteins is an example of: a. a non-enzymatic reaction b. catabolism c. anabolism d. a reaction that releases ATP
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- Which of the following is NOT a role of coenzymes? A. Receiver or donor of hydrides in redox reactions B. Receiver or donor of carboxyl groups in reactions that involve carboxyl group transfer. C. Receiver or donor of amino groups in transamination and deamination reactions. D. Receiver or donor of alkyl, alkenyl, acyl, or formyl groups in transfer reactions. E. Receiver or donor of oxygen in oxygenation reactions.Which of the following is incorrect regarding the active site of anenzyme?a. is unique to that enzymeb. is the part of the enzyme where its substrate can fitc. can be used over and over againd. is not affected by environmental factors, such as pH andtemperatureIn biological systems, ATP functions bya. providing the energy to drive endergonic reactions.b. acting as an enzyme and lowering the activation energy of certainreactions.c. adjusting the pH of solutions to maintain optimal conditions forenzyme activity.d. regulating the speed at which endergonic reactions proceed.e. interacting with enzymes as a cofactor to stimulate chemical reactions.
- Which of the following is a primary function of the active site of an enzyme? a. It binds allosteric regulators of the enzyme. b. It binds noncompetitive inhibitors of the enzyme. c. It catalyzes the reaction associated with the enzyme. d. It is activated by the presence of the end product of the metabolic pathway in which the enzyme is involved. Clear my choice Question 2 Not yet answered Points out of 2.00 Flag question Question text Which of the following statement about the mass spectrometry is true? a. Large amount of protein sample is needed for mass spectrum, and thus it is very expensive. b. It is a powerful method to determine the 3-dimensional structure of proteins. c. It can be sued for protein location in a living cell. d. It can be used to measure the molecular weight of proteins. e. It can be used to determine the stability of a protein structure in solution. Clear my choice…For the electron transport chain, all are inhibitors except: Select one: O a. Antimycin A O b. fluoroacetate Oc. Amytal O d. NaN2Which of the following statements regarding enzymes and metabolic reactions is correct? All enzyme reactions proceed towards a higher entropic state for the products. О а. O b. Enzymes set the pace and direction of metabolic reactions. Enzymes allow endergonic reactions to proceed towards the product by lowering the activation energy Ос. O d. The amount of free energy (AG) in a reaction is dependent on the ratio of the reactants to the products.
- ________ are always changed by participating in a reaction. a. Enzymes c. Reactants b. Cofactors d. CoenzymesWhich of the following is not true about enzymes? a. They are consumed by the reactions they catalyze. b. They are usually made of amino acids. c. They lower the activation energy of chemical reactions. d. Each one is specific to the particular substrate(s) to which it binds.The productionof ATP (cellular respiration) is actually a(n). However, the reaction requires the rxn. 14. of Glucose. A. catabolic : anabolism B. anabolic : catabolism C. exergonic : endergonic conversion D. hydrolytic : dehydration. the
- Indicate whether each of the following statements about an enzyme active site is true or false. a. It is the location where substrate molecules are produced. b. It always has a fixed, rigid geometry. c. It always has a geometrical shape exactly complementary to that of substrate. d. It always accomodates several structurally related substrates. e. It is the location where substrate molecules are converted to product molecules. f. It always has a shape that has a degree of flexibility to it. g. it always accomodates only one specific substrate.Which of the following is incorrect about enzyme cofactors? a. Some can be metal ions b. None; all the other choices are correct O c. The so-called co-substrates are needed in equal [substrates] and they are not recycled Od. Some are called coenzymes which are classified into co-substrates and prosthetic groups +Select all the true statements about sequential versus concerted models of allostery. Group of answer choices A. In sequential allostery, binding of the substrate on one end of an enzyme causes a conformational change on the other end which propagates to another enzyme and enables easier binding of a second substrate to the second enzyme B. No conformational changes occur in either model C. In concerted allostery, the two forms of the enzyme exist in equilibrium because of a conformational change independent of substrate binding D. In concerted allostery, binding of the substrate to one of the forms is favorable (but not to the other) and binding of the second substrate is enhanced on the favorable form