Essentials of Human Anatomy & Physiology (12th Edition)
12th Edition
ISBN: 9780134395326
Author: Elaine N. Marieb, Suzanne M. Keller
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 18SAE
What two structural characteristics of cell membranes determine whether substances can pass through them passively? What determines whether or not a substance can be actively transported through the membrane?
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Chapter 3 Solutions
Essentials of Human Anatomy & Physiology (12th Edition)
Ch. 3 - 1. Which of the following would you expect to find...Ch. 3 - Adult cell types you might expect to have gap...Ch. 3 - Which of the following are possible functions of...Ch. 3 - 4. A cell with abundant peroxisomes would most...Ch. 3 - A cell stimulated to increase its steroid...Ch. 3 - For diffusion to occur, there must be a. a...Ch. 3 - In which of the following tissue types might you...Ch. 3 - Which epithelium is “built” to withstand friction?...Ch. 3 - 9. What kind of connective tissue acts as a...Ch. 3 - What type of connective tissue prevents muscles...
Ch. 3 - Which of the following terms describe cardiac...Ch. 3 - Cancer is the same as a. all tumors. b. al...Ch. 3 - Prob. 13SAECh. 3 - 14. Although cells have differences that reflect...Ch. 3 - Describe the special function of DNA found in the...Ch. 3 - 16. Describe the four structural components of the...Ch. 3 - Prob. 17SAECh. 3 - 18. What two structural characteristics of cell...Ch. 3 - Explain the effect of the following solutions on...Ch. 3 - Prob. 20SAECh. 3 - Define mitosis. Why is mitosis important?Ch. 3 - Prob. 22SAECh. 3 - Prob. 23SAECh. 3 - 24. Why can an organ be permanently damaged if its...Ch. 3 - Describe the relative roles of DNA and RNA in...Ch. 3 - Define tissue. List the four major types of...Ch. 3 - Describe the general characteristics of epithelial...Ch. 3 - 28. Where is ciliated epithelium found, and what...Ch. 3 - What are the general structural characteristics of...Ch. 3 - Name a connective tissue with (1) a soft fluid...Ch. 3 - Prob. 31SAECh. 3 - 32. Tell where each of the three types of muscle...Ch. 3 - 33. How does tissue healing by fibrosis differ...Ch. 3 - Prob. 34SAECh. 3 - Prob. 35SAECh. 3 - Two examples of chemotherapeutic drugs (used to...Ch. 3 - Hydrocortisone is an anti-inflammatory drug that...Ch. 3 - John has severely injured his knee during football...Ch. 3 - 39. Three patients in an intensive care unit are...Ch. 3 - 40. Michael had a nervous habit of chewing on the...Ch. 3 - 41. Think carefully about the chemistry of the...Ch. 3 - 42. Jeanie was taken to the ER for heat stroke and...
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- Why is it advantageous for the cell membrane to be fluid in nature?arrow_forwardWhat two properties must a substance typically have to be capable of simple diffusion across a cell membrane? If a substance does not have these properties, can it still cross a cell membrane? How?arrow_forwardWhat is the difference between a semi-permeable mem- brane and a selectively permeable membrane? What does the semi permeable and selectively permeable let pass through?arrow_forward
- Which of the following statements is true of membrane proteins? a) They are suspended on the surface of the membrane. b) They are partly embedded in the bilayer c) They span across the bilayer and project from both sides d) Any of these are true, depending on the specific membrane protein.arrow_forwardConcerning permeability what type of membrane is the cell membrane?arrow_forwardList the three types of specialized membrane junctions?arrow_forward
- Secretory vesicles fuse with the cell membrane to release their contents to the outside of the cell. In this process, the membrane of the secretory vesicle becomes part of the cell membrane. Because small pieces of membrane are continually added to the cell membrane, we would expect the cell membrane to become larger and larger as secretion continues. However, the cell membrane stays the same size. Explain how this happens.arrow_forwardSecretory vesicles fuse with the cell membrane to release their contents to the outside of the cell. In this process, the membrane of the secretory vesicle becomes part of the cell membrane because small pieces of the membrane are continually added to the cell membrane, one would expect the cell membrane to become larger and larger as secretion continues. The cell membrane stays the same size, however. Explain how this happens.arrow_forwardWhat are the types of movement in/out of cell membrane? Which are passive/active?arrow_forward
- What is a selectively permeable membrane?arrow_forward1) You are studying a transport protein. It appears to bind temporarily to the molecule to be transported. During normal transport, no energy is expended. The addition of a particular molecule that closely resembles the normally transported molecule inhibits transport. An increase in the concentration of the normally transported molecule in the presence of a constant concentration of the inhibitor increases the rate of transport. What kind of transport is described? 2) What are peripheral membrane proteins?arrow_forwardWhich type(s) of cell junction prevent(s) substances from moving through the space between cells? Which type(s) of cell junction attach(es) cells to one another?arrow_forward
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