Concept explainers
Interpretation:
It should be determined that how is hormone binding to its receptor more like an allosteric regulator binding to an enzyme than a substrate binding to an enzyme.
Concept Introduction:
Hormones are chemical substances synthesized in small amounts by endocrine tissues and carried by blood stream to another tissue, where it acts as a messenger to regulate the function of the target tissue or organ.
A given hormone usually affects only a limited number of cells, which are called target cells and it responds to a hormone because it bears receptors for the hormone.
Enzymes are proteins that increase the
Allosteric (means “other site”) enzymes have two receptor sites in which one site fits the substrate like other enzymes and the other site fits an inhibitor or activator molecule.
Secondary messengers are short lived intracellular signaling molecules. Elevated concentration of these types of messengers leads to rapid alteration in the activity of one or more cellular enzymes.
Want to see the full answer?
Check out a sample textbook solutionChapter 28 Solutions
Modified Mastering Chemistry With Pearson Etext -- Standalone Access Card -- For Fundamentals Of General, Organic, And Biological Chemistry (8th Edition)
- A physician sees a patient whose symptoms include sluggishness, depression, and intolerance to cold. After eliminating other possible causes, the doctor diagnoses a hormone problem. What disorder fits the symptoms? Why does the doctor suspect that the underlying cause is a malfunction of the anterior pituitary gland?arrow_forwardA hormone molecule binds to a receptor on a cell membrane. It doesnt enter the cell; rather, the binding activates a second messenger inside the cell that triggers an amplified response to the hormonal signal. Is the signaling molecule a steroid or a nonsteroid hormone?arrow_forward
- Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning