Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
10th Edition
ISBN: 9780321908599
Author: Frederic H. Martini, Judi L. Nath, Edwin F. Bartholomew
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 23CP
The concentration of hydrogen ions (H+) in the stomach contents during digestion rises to a higher level than in the cells lining the stomach. Which transport process must be operating?
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During digestion, the concentration of hydrogen ions (H+) in the stomach rises to many times that within the cells lining the stomach, where H+ are produced. Is the type of transport process involved passive or active?
Glucose diffuses slowly through artificial phospholipid bilayers. The cells lining the small
intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their
glucose-poor cytoplasm. Using this information, which transport mechanism is most probably
functioning in the intestinal cells?
exоcytosis
simple diffusion
O phagocytosis
facilitated diffusion
active transport pumps
Glucose is transported across the cell membrane of intestinal cells. The cells lining the small intestine, however, rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm. Using this information, which transport mechanism is most probably functioning in the intestinal cells?
A facilitated diffusion
B simple diffusion
C osmosis
D concentration gradient
Chapter 3 Solutions
Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
Ch. 3 - List the general functions of the plasma membrane.Ch. 3 - Identify the components of the plasma membrane...Ch. 3 - Which component of the plasma membrane is...Ch. 3 - Which type of integral protein allows water, ions,...Ch. 3 - Prob. 5CPCh. 3 - What are the major differences between cytosol and...Ch. 3 - Prob. 7CPCh. 3 - Prob. 8CPCh. 3 - Explain why certain cells in the ovaries and...Ch. 3 - What does the presence of many mitochondria imply...
Ch. 3 - Describe the contents and structure of the...Ch. 3 - What is a gene?Ch. 3 - Define gene activation.Ch. 3 - Describe transcription and translation.Ch. 3 - What process would be affected by the lack of the...Ch. 3 - What is meant by the term selectively permeable...Ch. 3 - Define diffusion.Ch. 3 - List five factors that influence the diffusion of...Ch. 3 - How would a decrease in the concentration of...Ch. 3 - Define osmosis.Ch. 3 - Some pediatricians recommend using a 10 percent...Ch. 3 - Describe the process of carrier-mediated...Ch. 3 - The concentration of hydrogen ions (H+) in the...Ch. 3 - Describe endocytosis.Ch. 3 - Describe exocytosis.Ch. 3 - What is the process called whereby certain types...Ch. 3 - What is the membrane potential of a cell, and in...Ch. 3 - If the plasma membrane of a cell were freely...Ch. 3 - Give the biological terms for (a) cellular...Ch. 3 - What enzymes must be present for DNA replication...Ch. 3 - Describe interphase, and identify its stages.Ch. 3 - A cell is actively manufacturing enough organelles...Ch. 3 - Define mitosis, and list its four stages.Ch. 3 - What would happen if spindle fibers failed to form...Ch. 3 - Define growth factor, and identify several growth...Ch. 3 - An illness characterized by mutations that disrupt...Ch. 3 - Define metastasis.Ch. 3 - Define cellular differentiation.Ch. 3 - Prob. 1RQCh. 3 - The process that transports solid objects such as...Ch. 3 - Plasma membranes are said to be (a) impermeable,...Ch. 3 - _____ ion concentration is high in extracellular...Ch. 3 - At resting membrane potential, the cytoplasmic...Ch. 3 - The organelle responsible for a variety of...Ch. 3 - The synthesis of a functional polypeptide using...Ch. 3 - Prob. 8RQCh. 3 - The movement of water across a membrane from an...Ch. 3 - Prob. 10RQCh. 3 - List the four basic concepts that make up the cell...Ch. 3 - What are four general functions of the plasma...Ch. 3 - What are the primary functions of membrane...Ch. 3 - By what three major transport mechanisms do...Ch. 3 - List five important factors that influence...Ch. 3 - What are the four major functions of the...Ch. 3 - Diffusion is important in body fluids, because it...Ch. 3 - Microvilli are found (a) mostly in muscle cells,...Ch. 3 - When a cell is placed in a(n) _____ solution, the...Ch. 3 - Suppose that a DNA segment has the following...Ch. 3 - Prob. 21RQCh. 3 - The sodium-potassium exchange pump (a) is an...Ch. 3 - If a cell lacked ribosomes, it would not be able...Ch. 3 - List, in sequence, the phases of the interphase...Ch. 3 - List the stages of mitosis, and briefly describe...Ch. 3 - (a) What is cytokinesis? (b) What is the role of...Ch. 3 - The transport of a certain molecule exhibits the...Ch. 3 - Solutions A and B are separated by a selectively...Ch. 3 - A molecule that blocks the ion channels lining...Ch. 3 - What is the benefit of having some of the cellular...Ch. 3 - List the general functions of the plasma membrane.Ch. 3 - Identify the components of the plasma membrane...
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- Which of the following methods of transport is being used to transfer the substance into the cell in the accompanying graph? a. diffusion down a concentration gradient b. osmosis c. facilitated diffusion d. active transport e. vesicular transport f. It is impossible to tell with the information provided.arrow_forwardActive transport must function continuously because_______. a. plasma membranes wear out b. cells must be in constant motion c. facilitated transport opposes active transport d. diffusion is constantly moving the solutes in the other directionarrow_forwardWhich of the following is true of exocytosis, but not true of facilitated diffusion? Select all that apply. A) Involves transport vesicles B) May be used to move a hydrophilic substance to the other side of the membrane C) Requires energy D) Always moves a substance down its concentration gradient E) Always results in a substance exiting from the cell .arrow_forward
- Which type(s) of vesicular transport is for nonspecific engulfment of fluid and materials from outside of the cell? a receptor-mediated endocytosis b exocytosis c pinocytosis d phagocytosis and pinocytosisarrow_forwardLiver cells are packed with glucose. If the concentration of glucose in a liver cell is higher than in the surrounding fluid, what mechanism could the cell use to import even more glucose? Why would only this mode of transport work?arrow_forwardWhat is the difference between active transport and passive transport?arrow_forward
- In which situation would passive transport not use a transport protein for entry into a cell?arrow_forwardWhat type of transport is shown?arrow_forwardMigrating fish would be rapidly transferring substances across cell membranes. The substances would include sodium, water, carbon dioxide, oxygen, and steroids. Which of these would most likely be moved via active transport? Why?arrow_forward
- Define diffusion. How does this differ from osmosis?arrow_forwardA migraine fish would be rapidly transferring substances across cell membrane. The substances would include sodium, water, carbon dioxide, oxygen, and steroids. Which of those would most likely be moved via active transport? Why?arrow_forwardWhat is the difference between active and passive transport processes?arrow_forward
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