Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN: 9781305117396
Author: Cecie Starr, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 4, Problem 3FIO
Summary Introduction
To determine: Whether the pathway is a cyclic or a linear.
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A very special property of enzymes is Feedback inhibition. What is feedback inhibition? Draw a hypothetical cyclic pathway where in there are 7 reactions to show feedback inhibition.
Part A: Say that a cell is running a metabolic pathway that follows the same pattern as the diagram and something happens that prevents enzyme 3 from reacting normally. Of the following options, which one is the end result of this interrupted metabolic pathway?
Part B: for this reaction to be an example of feedback inhibition, the ____ would have to be blocking enzyme 3.
Answer choices:
• pH
• Product
• Salinity
fill in the blank
An enzymatic protein in its active state with all its cofactors is called a ( ) while an enzyme missing a cofactor to make it active is called an ( ).
Chapter 4 Solutions
Biology Today and Tomorrow without Physiology (MindTap Course List)
Ch. 4 - Figure 4.5 Energy inputs and outputs in chemical...Ch. 4 - Figure 4.10 Enzymes, temperature, and pH. Each...Ch. 4 - Prob. 3FIOCh. 4 - Prob. 4FIOCh. 4 - The genus Ferroplasma consists of a few species of...Ch. 4 - Prob. 2DIDCh. 4 - Prob. 3DIDCh. 4 - Prob. 1SQCh. 4 - Prob. 2SQCh. 4 - Prob. 3SQ
Ch. 4 - Prob. 4SQCh. 4 - Prob. 5SQCh. 4 - Prob. 6SQCh. 4 - Prob. 7SQCh. 4 - Prob. 8SQCh. 4 - Ions or molecules tend to diffuse from a region...Ch. 4 - Prob. 10SQCh. 4 - Prob. 11SQCh. 4 - Prob. 12SQCh. 4 - A transport protein requires ATP to pump sodium...Ch. 4 - Prob. 14SQCh. 4 - Prob. 15SQCh. 4 - Prob. 1CTCh. 4 - Water molecules tend to diffuse in response to...Ch. 4 - Dixie Bee wanted to make JELL-O shots for her next...Ch. 4 - The enzyme trypsin is sold as a dietary enzyme...Ch. 4 - Prob. 5CT
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following scenarios is an example of proximity and orientation effects (select all correct answers)? Question 4 options: The side chains in an enzyme active site are positioned to optimally react with the substrate Two substrates are bound in the same active site of an enzyme Bringing two positive charges together to increase activation energy An enzyme binds strongly to a substratearrow_forwardWhat type of inhibition is occurring when the end product stops the action of the first enzyme in the video on feedback inhibition found below: https://www.youtube.com/watch?v=qHb7iieM2Ro Select one: a. competitive b. non-competitive c. Both competitive and non-competitive inhibition are illustrated in this video/figurearrow_forwardWhen an enzyme interacts with the substrate, which of the following occurs? Question 9 options: The protein frees a substrate so that it can cause a chemical reaction within the cell. The protein and substrate adjust their shape slightly during binding to facilitate catalysis. The substrate unlocks a protein within the cell so that it can cause a chemical reaction. The tertiary structure of the protein and the shape of the substrate are identical.arrow_forward
- Homeostasis is important for all of the functions of the human body. Why is maintaining homeostasis important for enzymes? Group of answer choices: To maintain their normal structure and function To prevent substrate from binding to the enzyme To allow the substrate to bind forever To cause the enzyme to fold differently for each reactionarrow_forwardWhich of the following statements is not true? Metabolic pathways _____. a. occur in a stepwise series of chemical reactions b. are speeded up by enzymes c. may break down or assemble molecules d. always produce energy (such as ATP)arrow_forwardFigure 4.5 Energy inputs and outputs in chemical reactions. 1 Some reactions convert molecules with lower energy to molecules with higher energy, so they require a net energy input in order to proceed. 2 Other reactions convert molecules with higher energy to molecules with lower energy, so they end with an energy release Figure It Out: Which law of thermodynamics explains energy inputs and outputs in chemical reactions?arrow_forward
- The concept that an enzyme will turn on when its active site joins in a "perfect fit" with a substrate's active site is called... The Puzzle Mechanism The Perfect Fit Mechanism The Snug as a Bug in a Rug Mechanism The Lock and Key Mechanismarrow_forwardWhat are the steps for an enzyme to create a product in order: The energy of activation is lowered so the reaction can happen quicker. Substrate attaches to the active site. The product is created and released from the active site. The energy of activation is lowered so the reaction can happen slower. A specific substrate attaches to the active site.arrow_forwardWhat is the key activity of Panel II in the figure above? The enzyme is consumed as the products form. The substrate leaves the active site. The conversion of substrates to products occurs. The product leaves the enzyme. The product decomposes to the reactants.arrow_forward
- As the amount of substrate is increased in an enzyme-substrate reaction, which of the following will happen? the reaction is inhibited the amount of product increases. enzymes become denatured faster. enzymes work faster. the amount of enzyme also increases proportionally.arrow_forwardhaving trouble with the first part, should be an enzyme... for example: Asprin inhibits cyclooxygenase enzymearrow_forwardChoose only the letter, no explanation needed. Enzyme activity is affected by a variety of factors. What factor causes the enzyme to denature if it becomes extremely high? * Choices: A. Water's Effect B. pH C. Temperature D. Activator's Effect An inhibitor binds to the enzyme's active site, preventing the substrate from binding to it. What conclusions can you make from this situation? * A. No reaction occurred B. Non-competitive inhibition occurred C. Enzyme activity occurred D. Competitive inhibition occurred Each enzyme is very selective when it comes to its substrate. What can you conclude from this statement? * A. Any substrate can bind to the active site. B. Enzymes are used up in the reaction. C. Only a specific substrate can bind to the active site. D. Enzymes break down when not used. Lock : Key :: Active Site : _____________________________ * A. Substrate B. Active Site C. Coenzyme D. Cofactor Enzymes only speed up biological functions, so they are NOT used up in the…arrow_forward
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