Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 6.4, Problem 15CC
What do receptors, enzymes, and transporters have in common that explains why they all exhibit saturation, specificity, and competition?
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Inhibition of the Na,K-ATPase might reasonably result in which of the following:
a.) gradual cellular accumulation of K+
b.) gradual decrease in cytoplasmic Na+
c.) cell shrinkage
d.) hyperpolarization of the membrane potential
e.) reduced activity of many secondary active transporters
1) Which substance(s) can be moved across membranes from regions where they are less concentrated to regions where they are more concentrated using ATP or another energy source?
A) water
B) oxygen
C) carbon dioxide
D) sodium and glucose
E) animals are unable to move any substances across membranes against their concentration gradients
F) transporter proteins that use ATP can move all of these molecules against their concentration gradients
Receptors for chemical messengers are proteins or glycoproteins located either inside the cell or, much more commonly, in the plasma membrane. The binding of a messenger by a receptor manifests specificity, saturation, and competition?
Chapter 6 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 6.1 - Match the communication method on the left with...Ch. 6.1 - Which signal molecules listed in the previous...Ch. 6.1 - A cat sees a mouse and pounces on it. Do you think...Ch. 6.2 - List four components of signal pathways.Ch. 6.2 - Prob. 5CCCh. 6.2 - What are the four steps of signal transduction?Ch. 6.2 - Prob. 7CCCh. 6.2 - Prob. 8CCCh. 6.2 - Name the four categories of membrane receptors.Ch. 6.2 - Prob. 10CC
Ch. 6.2 - Prob. 11CCCh. 6.2 - Prob. 12CCCh. 6.3 - The extracellular fluid Ca2+ concentration...Ch. 6.3 - Prob. 14CCCh. 6.4 - What do receptors, enzymes, and transporters have...Ch. 6.4 - Prob. 16CCCh. 6.4 - Prob. 17CCCh. 6.5 - What is the difference between tonic control and...Ch. 6.5 - Prob. 19CCCh. 6.5 - What is the difference between local control and...Ch. 6.5 - Name the seven steps in a reflex control pathway...Ch. 6.5 - Prob. 22CCCh. 6.5 - Prob. 23CCCh. 6.5 - Prob. 24CCCh. 6 - What are the two routes for long-distance signal...Ch. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Prob. 4RQCh. 6 - Prob. 5RQCh. 6 - An enzyme known as protein kinase adds the...Ch. 6 - Distinguish between central and peripheral...Ch. 6 - Prob. 8RQCh. 6 - Prob. 9RQCh. 6 - Prob. 10RQCh. 6 - Prob. 11RQCh. 6 - Explain the relationships of the terms in each of...Ch. 6 - List and compare the four classes of membrane...Ch. 6 - Prob. 14RQCh. 6 - Prob. 15RQCh. 6 - Prob. 16RQCh. 6 - Prob. 17RQCh. 6 - Identify the target tissue or organ for each...Ch. 6 - Now identify the integrating center for examples...Ch. 6 - In each of the following situations, identify the...Ch. 6 - Prob. 21RQCh. 6 - Prob. 22RQ
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- Why is bulk transport important to cells? Among the three types bulk transport of molecules which do you think is most efficient and selective? (T/I)arrow_forwardYou’ve just come from your annual physical and are alarmed to find that you’ve developed a number of plaque blockages in your coronary arteries. Which intervention might decrease your risk of having a heart attack? (A) Take a drug that reduces the recycling of LDL receptors back to the cell surface.(B) Drink more alcohol, as ethanol has been shown to increase the synthesis of SREBP. (C) Increase your intake of fish to increase your circulating HDL levels.(D) Increase your intake of red meat to increase your circulating LDL levels.(E) Take a drug that decreases the KM of HMG-CoA reductase for HMG-CoA.arrow_forwardWhich of the following is involved in the bio-signaling pathway that includes membrane turnover and exocytosis? a) Phosphatidyl glycerol b) Phosphatidylinositol c) Phosphatidyl glycerol and myoinositol d) Myoinositolarrow_forward
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