Enzyme catalysis - Samenvattingen, Aantekeningen en Examens

Bio Sci 93 Midterm 2 Practice Questions with Verified Answers Catabolism is to anabolism as ___________________ is to ___________________. a.) exergonic; spontaneous b.) exergonic; endergonic c.) free energy; entropy d.) work; energy b Most cells cannot harness heat to perform work because a.) heat does not involve a transfer of energy. b.) cells do not have much thermal energy; they are eventually cool. c.) temperature is usually uniform throughout a cell. d.) heat can neve...

AL 1.1 - what is the difference between actual change in free energy (delta G) and standard change in free energy (delta G knot) with regard to the spontaneity of the cell. correct answers Delta G knot can be used to predict the spontaneity of a reaction under standard conditions, which are 1 atm, 298K and all reactants and products are initially set at [1M]. Under these conditions, the reaction will be spontaneous if delta G knot <0 as defined by. Delta G knot = -RT lnKeq. Under cellular c...

Microbiology - Portage Module 2 Metabolism Exam Questions And Answers What is cellular metabolism? - ANS a controlled set of biochemical reactions that occur in living organisms in order to maintain life What is an enzyme? - ANS a protein, or group of proteins, that catalyze (speed up) chemical reactions What is unique about enzymes? - ANS the enzyme is not consumed during the reaction and can be used repeatedly by the cell What is a cofactor? - ANS a small chemical comp...

Bio 151 Animal Physiology Question and answer 2023To achieve optimum effectiveness in promoting exchange or movement of fluids or molecules from one body compartment or system to another, such as from the lumen of the gastro-intestinal tract to the extra-cellular fluid surrounding the baso-lateral membrane of enterocytes, evolution has favored development of a gastro-intestinal tract with _____. A. more branching or folds, and finger-like projections on apical cell membranes B. increased thic...

Bio 101 REAL Exam 2 QUESTIONS WITH VERIFIED ANSWER |ALREADY PASSED ATP hydrolysis is a. endergonic. b. exergonic. c. chemoautotrophic. d. None of the above - ANSWER exergonic. Enzymes are biological catalysts and function by a. increasing free energy in a system. b. lowering activation energy of a reaction. c. lowering entropy in a system. d. increasing temperature near a reaction. - ANSWER lowering activation energy of a reaction. Which of the following contribute to the speci...

What is cellular metabolism? - a controlled set of biochemical reactions that occur in living organisms in order to maintain life What is an enzyme? - a protein, or group of proteins, that catalyze (speed up) chemical reactions What is unique about enzymes? - the enzyme is not consumed during the reaction and can be used repeatedly by the cell What is a cofactor? - a small chemical component, usually metal ions, that assist enzymes during the catalysis reactions Do cofactors serve as regu...

How do most enzymes reduce the activation energy needed to move a reaction forward? correct answer: Providing an active site most complementary the transition state An enzyme has a mutation within the substrate binding of the coenzyme needed for covalent catalysis. Which of the following is likely to result as a consequence of this mutation? correct answer: The enzyme will not be able to form the transition state complex Hemoglobin has the ability to display cooperative binding while myo...

Which of the following statements is FALSE? a) The free E barrier in a chemical rxn must be overcome in order for products to form. b) An increase in temp. can result in an increased rxn rate. c) Lowering the free E of the transition state can increase a rxn rate d) At a given temp. & time all molecules in a soln or a sample will have the same E Correct Answer-D In a favorable rxn, the free energy of the products _ the free energy of the reactants. Correct Answer-has no bearing on Cata...

BIOD 171 ESSENTIAL MICROBIOLOGY FINAL EXAM 183 PRACTICE QUESTIONS AND ANSWERS BIOD 171 ESSENTIAL MICROBIOLOGY FINAL EXAM GRADED A What various functions do proteins have in a cell Proteins may facilitate the movement of materials in or out of a cell. Some can act as enzymes that catalyze, or speed up, biochemical processes. Others play a structural role while other proteins, such as filaments, enable movement. What are the main morphologies of bacteria? Bacteria can be described as coc...

UNE Biochemistry Midterm Exam Questions And Answers Verified 100% Correct!! How do most enzymes reduce the activation energy needed to move a reaction forward? Providing an active site most complementary the transition state An enzyme has a mutation within the substrate binding of the coenzyme needed for covalent catalysis. Which of the following is likely to result as a consequence of this mutation? The enzyme will not be able to form the transition state complex Hemoglobin has the abili...