Homework Answers
Ans2) option d is correct answer
In this graph, energy input is required so it is endergonic reactions. Also, the free energy change is greater than 0 so it will be positive. And in the endergonic reactions, the free energy is more in final state that is it is greater in product site as compared to reactant site. Also, these reactions are considered to be non spontaneous which means in order to start a reaction some energy is needed.
Ans 3) option a is correct answer
Enzymes are biological catalyst which alter the rate of chemical
reaction without itself going amy change. Also, all enzymes are
proteins but not all proteins are enzymes.
Enzymes are catalyst which are very efficient for reactions.
stay safe. For Doubts ask in comments.
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QUESTION 2 The reaction illustrated by the graph shown would be considered and have a ----...
a- In the induced-fit model of enzyme action, a _______ must bind to the enzyme's______ for...
a- In the induced-fit model of enzyme action, a _______ must bind to the enzyme's______ for the enzyme to perform its function. (A) catalyst; activation energy (B) product; catalytic site (C) product; active site (D) water molecule; allosteric site (E) substrate; active site b- Which of the following is CORRECT for an exergonic reaction? (A) more activation energy is needed than for an endergonic reaction (B) less activation energy is needed than for an endergonic reaction (C) products have more...
Enzyme 6. Where do substrates bind on an enzyme? A. allosteric site B. active site C....
Enzyme 6. Where do substrates bind on an enzyme? A. allosteric site B. active site C. receptor D. ion channel 7. Enzymes are capable of increasing the rate of a chemical reaction through which of the following means? A. changing AG from positive to negative B. reducing the activation energy C. changing the equilibrium point of the reaction D. increasing kinetic energy 8. When a molecule can occupy the same active site as the substrate, a situation called can result...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. Heat cannot supply activation energy. c. d. Stomach acid inactivates pepsin. 2. Which is not an example of an exergonic reaction? a. photosynthesis b. a nuclear reaction in the sun c. ATP → ADP + Pi d. glucose breakdown .3, which of the following is True? a. ATP is a long-term energy...
1. What are the different sources of energy available to living organisms? 2. How do the...
1. What are the different sources of energy available to living organisms? 2. How do the acquisition and the use of energy by living organisms work according to the laws of thermodynamics? 3. Explain the energy use in the following reactions: endergonic/exergonic. 4. What is metabolism? How are chemical reactions related to metabolism? Why is energy needed to run a metabolism? What are coupled reactions? 5. Draw a picture of ATP. Why is this molecule so important for cells? How...
no explaination is needed 28) Which of the following is true for all exergonic reactions? A)...
no explaination is needed
28) Which of the following is true for all exergonic reactions? A) The reaction proceeds with a net release of free energy B) The products have more total energy than the reactants. C) A net input of energy from the surroundings is required for the reactions to proceed. D) The reactions are nonspontaneous 29) When ATP releases some energy, it also releases Inorganic phosphate. What purpose does this serve (if any) in the cell? A) It...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
If all these question could be answered that would be helpful Lecture 2 What is energy?...
If all these question could be answered that would be
helpful
Lecture 2 What is energy? Identify Rxns that release and absorb heat from energy curve spontaneous/nonspontaneous and of Identify activation energy and exothermic/endothermic reactions ΔΗ AG or Identify covalent vs. ionic bonds Be able to calculate AG, AH, AS, or temperature given the other 3 parameters State in words what it means when AG/H/S is negative or positive What is hydrophobic effect and why does it occur? How does...
answer questions 15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d)...
answer questions
15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d) holoenzyme 16) Aspartate-transcarbamylase is an enveloved in a pathway that may produces molecule called Cytidine triphosphate. Cytidine triphosphate can bind to anot t o this enzyme, rendering the active site nonfunctional. This is an example of a) ATP hydrolysis b) competitive inhibition c) feedback inhibition d) allosteric activation 17) Which of the following is false regarding fermentation? a) fermentation occurs in the absence of...
QUESTION 1 AGº for the hydrolysis of ATP is considered to be: O highly endergonic O...
QUESTION 1 AGº for the hydrolysis of ATP is considered to be: O highly endergonic O highly exergonic O slightly endergonic O slightly exergonic QUESTION 2 Which of the following most closely approximates a second messenger? An odorant receptor on the surface of a mouse olfactory epithelium cell that undergoes a o conformational change upon binding of metabolites (breakdown products) of thyroid hormones, activating an intracellular G-protein. Ca=ions flowing into the cytoplasm and there binding to a protein on the...
Question 5 The spontaneity of a reaction depends both on the enthalpy change, Delta H, and...
Question 5 The spontaneity of a reaction depends both on the enthalpy change, Delta H, and entropy change, Delta S. Reactions that release energy produce more stable products, and the universe tends toward disorder. Thus, an exothermic reaction with a positive entropy change will always be spontaneous. Mathematically, this relationship can be represented as where Delta G is the change in Gibbs free energy and T is the Kelvin temperature. If Delta G is negative, then the reaction is spontaneous....
Enzyme 6. Where do substrates bind on an enzyme? A. allosteric site B. active site C. receptor D. ion channel 7. Enzymes are capable of increasing the rate of a chemical reaction through which of the following means? A. changing AG from positive to negative B. reducing the activation energy C. changing the equilibrium point of the reaction D. increasing kinetic energy 8. When a molecule can occupy the same active site as the substrate, a situation called can result...
Thinking Through the Concepts Multiple Choice 1. Which of the following is True? a. Enzymes increase activation energy requirements. b. Activation energy is required to initiate exergonic reactions. Heat cannot supply activation energy. c. d. Stomach acid inactivates pepsin. 2. Which is not an example of an exergonic reaction? a. photosynthesis b. a nuclear reaction in the sun c. ATP → ADP + Pi d. glucose breakdown .3, which of the following is True? a. ATP is a long-term energy...
1. What are the different sources of energy available to living organisms? 2. How do the acquisition and the use of energy by living organisms work according to the laws of thermodynamics? 3. Explain the energy use in the following reactions: endergonic/exergonic. 4. What is metabolism? How are chemical reactions related to metabolism? Why is energy needed to run a metabolism? What are coupled reactions? 5. Draw a picture of ATP. Why is this molecule so important for cells? How...
no explaination is needed
28) Which of the following is true for all exergonic reactions? A) The reaction proceeds with a net release of free energy B) The products have more total energy than the reactants. C) A net input of energy from the surroundings is required for the reactions to proceed. D) The reactions are nonspontaneous 29) When ATP releases some energy, it also releases Inorganic phosphate. What purpose does this serve (if any) in the cell? A) It...
Part A - Overview of enzyme structure and enzymatic reactions Enzymes are large globular proteins. Much of their three dimensional shape is the result of interactions between the R (variable) groups of their amino acids. The active site is the portion of the enzyme that will interact with the substrate the molecule that the enzyme acts upon. The nature and arrangement of amino acids in the active site make each enzyme specific to a substrate and to the reaction it...
If all these question could be answered that would be
helpful
Lecture 2 What is energy? Identify Rxns that release and absorb heat from energy curve spontaneous/nonspontaneous and of Identify activation energy and exothermic/endothermic reactions ΔΗ AG or Identify covalent vs. ionic bonds Be able to calculate AG, AH, AS, or temperature given the other 3 parameters State in words what it means when AG/H/S is negative or positive What is hydrophobic effect and why does it occur? How does...
answer questions
15) An apoenzyme + cofactor(s) - a) Inhibitor b) active site c) substrate d) holoenzyme 16) Aspartate-transcarbamylase is an enveloved in a pathway that may produces molecule called Cytidine triphosphate. Cytidine triphosphate can bind to anot t o this enzyme, rendering the active site nonfunctional. This is an example of a) ATP hydrolysis b) competitive inhibition c) feedback inhibition d) allosteric activation 17) Which of the following is false regarding fermentation? a) fermentation occurs in the absence of...
QUESTION 1 AGº for the hydrolysis of ATP is considered to be: O highly endergonic O highly exergonic O slightly endergonic O slightly exergonic QUESTION 2 Which of the following most closely approximates a second messenger? An odorant receptor on the surface of a mouse olfactory epithelium cell that undergoes a o conformational change upon binding of metabolites (breakdown products) of thyroid hormones, activating an intracellular G-protein. Ca=ions flowing into the cytoplasm and there binding to a protein on the...
Question 5 The spontaneity of a reaction depends both on the enthalpy change, Delta H, and entropy change, Delta S. Reactions that release energy produce more stable products, and the universe tends toward disorder. Thus, an exothermic reaction with a positive entropy change will always be spontaneous. Mathematically, this relationship can be represented as where Delta G is the change in Gibbs free energy and T is the Kelvin temperature. If Delta G is negative, then the reaction is spontaneous....
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