Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 9, Problem 17RQ
What is the effect of an inhibitor binding an enzyme?
- The enzyme is degraded.
- The enzyme is activated.
- The enzyme is inactivated.
- The complex is transported out of the cell
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ATP is bound to the regulatory subunit to inhibit subunit dissociation.
CAMP is bound to the catalytic site to inhibit the regulatory subunit.
The regulatory subunit has cyclic GMP bound in place of cyclic AMP.
The intrinisic pseudosubstrate peptide is bound to the active site.
Chapter 9 Solutions
Biology 2e
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Ch. 9 - What property enables the residues of the amino...Ch. 9 - Histamine binds to the H1 G-protein-linked...Ch. 9 - A scientist observes a mutation in the...Ch. 9 - What is the function of a phosphatase? A...Ch. 9 - How does NF-kB induce gene expression? A small,...Ch. 9 - Apoptosis can occur in a cell when the cell is...Ch. 9 - What is the effect of an inhibitor binding an...Ch. 9 - How does PKC’s signaling role change in response...Ch. 9 - A scientist notices that a cancer cell line fails...Ch. 9 - Which type of molecule acts as a signaling...Ch. 9 - Quorum sensing is triggered to begin when...Ch. 9 - A doctor is researching new ways to treat biofilms...Ch. 9 - What is the difference between intracellular...Ch. 9 - How are the effects of paracrine signaling limited...Ch. 9 - What are the differences between internal...Ch. 9 - Cells grown in the laboratory are mixed with a dye...Ch. 9 - Insulin is a hormone that regulates blood sugar by...Ch. 9 - The same second messengers are used in many...Ch. 9 - What would happen if the intracellular domain of a...Ch. 9 - If a cell developed a mutation in its MAP2K1 gene...Ch. 9 - What is a possible result of a mutation in a...Ch. 9 - How does the extracellular matrix control the...Ch. 9 - A scientist notices that a cancer cell line shows...Ch. 9 - What characteristics make yeasts a good model for...Ch. 9 - Why is signaling in multicellular organisms more...Ch. 9 - Pseudomonas infections are very common in hospital...
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- What is mediator and how does it work?arrow_forwardDescribe how feedback inhibition is reversible.arrow_forwardA segment of cell's collection of biochemical pathways is shown below. P is a product of one series of these reactions. It is also a regulatory molecule. Look at the pathway below and indicate the position(s) at which M is most likely to act as a feedback inhibitor when its concentration gets too high. 1 2 3 4 5 A----->B -----> C----->E----->J------>M----->P----->X----->Zarrow_forward
- Which of the following utilizes receptors that are located in the cytosol? Steroid Hormone Signaling GPCR Singaling Ion channel signaling RTK Singalingarrow_forwardWhat is the function of a protein kinase?arrow_forwardWhich of the following is not a mechanism of enzyme regulation? Activation by proteolysis O Multiple forms of enzymes Transfigural control Reversible covalent modification Allosteryarrow_forward
- The activity of an enzyme can be altered when it becomes negatively charged due to: phosphate removal by a kinase, which is called dephosphorylation phosphate removal by a phosphatase, which is called dephosphorylation phosphate removal by a kinase, which is called phosphorylation phosphate addition by a phosphatase, which is called dephosphorylation phosphate addition by a kinase, which is called phosphorylationarrow_forwardfill in the blank A small amount of ligand can generate a large response. This is called signal amplification and can be brought about through metabolic enzymes , through the blank ion, or through gene expression.arrow_forwardCompare and contrast the actions of an allosteric effector, a competitive enzyme inhibitor, and a noncompetitive inhibitor.arrow_forward
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