What is the activation energy of a reaction? Select the single best answer. the energy...
What is the activation energy of a reaction? Select the single
best answer.
the energy required for an enzyme to overcome
competitive inhibition
the energy used up by an enzyme in a reaction
the energy required for a reaction to take place
the energy required in order for an enzyme to catalyze
a reaction
What is the relationship between pepsin and pepsinogen? Select all
that apply.
pepsin is the inactive form of the enzyme; pepsinogen
is the active form of the enzyme
pepsin is cleaved in the stomach to produce
pepsinogen
there is no known relationship between pepsin and
pepsinogen
pepsin is the active form of the enzyme; pepsinogen is
the inactive form of the enzyme
pepsinogen is cleaved in the stomach to produce
pepsin
they are both active proteolytic enzymes
Homework Answers
Add Answer to:
What is the activation energy of a reaction? Select the single
best answer.
the energy...
Ligand binding to a G-protein coupled receptor (GPCR) results in activation of a single G- protein...
Ligand binding to a G-protein coupled receptor (GPCR) results in activation of a single G- protein and then the receptor deactivates. O True False When an activated receptor relays the signal along more than one pathways this is called convergence. O True OFalse Which of the following best describes digestive enzymes? O Hydrolases OLigases Kinases Transferases Decarboxylases Most digestive enzymes are released from cells in an inactive form. True False denatures Protein digestion in humans (and other mammals) begins in...
Question 3 Answer saved Points out of 5 P Flag question FIND THE BEST FIT AMONG...
Question 3 Answer saved Points out of 5 P Flag question FIND THE BEST FIT AMONG THE FOLLOWING PAIRS ENZYME SUBSTRATE COMPLEX ILLUSTRATES THE INDUCED FI MODEL OF OPERATION • ENZYME COMPETITIVE INHIBITION SUBSTRATE Choose... PREVENTS SUBSTRATE BINDING VIA ACTIVE SITE INVOLVES AN ALLOSTERIC MOLECULE OF INHIBITION ILLUSTRATES THE INDUCED FIT MODEL OF OPERATION LOWERS ACTIVATION ENERGY FOR A REACTION ALWAYS CONSUMED IN AN ENZYMATIC REACTION NONCOMPETITIVE INHIBITION
An enzyme facilitates chemical reactions by: Select one: a. Increasing the free-energy difference between reactants and...
An enzyme facilitates chemical reactions by: Select one: a. Increasing the free-energy difference between reactants and products. b. Decreasing the free-energy difference between reactants and products. c. Lowering the activation energy of the reaction. d. Raising the activation energy of the reaction. e. None of the above. Q2. Enzymes are important components of biological systems because they: Select one: a. Speed up reactions. b. Reduce the activation energy of reactions allowing them to occur. c. Catalyze specific reactions, allowing for...
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...
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...
Question 49 2 pts Enzymes work either by lowering the activation energy or increasing the free...
Question 49 2 pts Enzymes work either by lowering the activation energy or increasing the free energy of a reaction. True False Question 50 2 pts Adding more substrate will always speed up an enzyme catalyzed reaction, but adding more enzyme will never speed up the reaction rate. True False Question 47 2 pts Because of C4 photosynthesis's ability to reduce photorespiration, all plants will evolve into C4 plants in the future. True False Question 48 2 pts If plants...
Select the correct definition of activation energy from the list given below: Group of answer choices...
Select the correct definition of activation energy from the list given below: Group of answer choices A : The activation energy is the minimum energy required to start a reaction B : The activation energy is the difference in enthalpy of formation between the products and the reactants C :The activation energy is a state function that depends only on the state of the reactants and products D : The activation energy is the maximum energy required to start a...
Select all of the mechanisms by which enzymes can lower the activation energy of a reaction:...
Select all of the mechanisms by which enzymes can lower the activation energy of a reaction: --separating reactants to prevent excess reaction speeds --bringing molecules together or orienting them in favorable positions --altering the energy of the products --creating a favorable environment (like the exclusion of water around reactants). --altering the energy of the reactants
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...
What is the energy of activation? 16. How do enzymes speed the rate of reaction? 17....
What is the energy of activation? 16. How do enzymes speed the rate of reaction? 17. Talk about the effect of the following on enzyme reaction rate: a) Substrate concentration b) pH c) Temperature 18. How do vitamins play a part in enzymatic reactions?
Ligand binding to a G-protein coupled receptor (GPCR) results in activation of a single G- protein and then the receptor deactivates. O True False When an activated receptor relays the signal along more than one pathways this is called convergence. O True OFalse Which of the following best describes digestive enzymes? O Hydrolases OLigases Kinases Transferases Decarboxylases Most digestive enzymes are released from cells in an inactive form. True False denatures Protein digestion in humans (and other mammals) begins in...
Question 3 Answer saved Points out of 5 P Flag question FIND THE BEST FIT AMONG THE FOLLOWING PAIRS ENZYME SUBSTRATE COMPLEX ILLUSTRATES THE INDUCED FI MODEL OF OPERATION • ENZYME COMPETITIVE INHIBITION SUBSTRATE Choose... PREVENTS SUBSTRATE BINDING VIA ACTIVE SITE INVOLVES AN ALLOSTERIC MOLECULE OF INHIBITION ILLUSTRATES THE INDUCED FIT MODEL OF OPERATION LOWERS ACTIVATION ENERGY FOR A REACTION ALWAYS CONSUMED IN AN ENZYMATIC REACTION NONCOMPETITIVE INHIBITION
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...
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...
Question 49 2 pts Enzymes work either by lowering the activation energy or increasing the free energy of a reaction. True False Question 50 2 pts Adding more substrate will always speed up an enzyme catalyzed reaction, but adding more enzyme will never speed up the reaction rate. True False Question 47 2 pts Because of C4 photosynthesis's ability to reduce photorespiration, all plants will evolve into C4 plants in the future. True False Question 48 2 pts If plants...
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...
What is the energy of activation? 16. How do enzymes speed the rate of reaction? 17. Talk about the effect of the following on enzyme reaction rate: a) Substrate concentration b) pH c) Temperature 18. How do vitamins play a part in enzymatic reactions?
Most questions answered within 3 hours.
-
Suppose that the first national bank currently holds a total of
37 million dollars in deposits...
asked 13 seconds from now -
If you have 140. mL of a 0.100
M MOPS buffer at pH 7.20 and you...
asked 2 minutes ago -
A proton is released from rest in a uniform electric field of
magnitude 1.27E+5 N/C. Calculate...
asked 26 minutes ago -
Let's say you want to poll a random sample of 150 students on
campus to see...
asked 26 minutes ago -
A salt contains only barium and one of the halide ions. A
0.158g sample of a...
asked 33 minutes ago -
Give your answer in SI units and to three significant
figures.
A 2.3 m radius cylinder...
asked 41 minutes ago -
Supply the missing quantities. (Assume P1 =
0.4, P2 = 0.6, P3 =
0.4.)
P(A ∩...
asked 46 minutes ago -
The chapter discusses four types of change that organizations
typically encounter—technological, structural, task, and people
change....
asked 45 minutes ago -
A sample of 12 grams of a substance that does not dissociate is
dissolved in 80...
asked 48 minutes ago -
What is the pH of a solution made by mixing 0.438 moles of HBr
and 0.304...
asked 48 minutes ago -
If it takes 100m to stop a car initially moving at 100 m/s
what distance is...
asked 1 hour ago -
Two resistors have resistances R1 and R2. When the resistors are
connected in series to a...
asked 1 hour ago