Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Textbook Question
Chapter 5, Problem 6RQ
Describe the following types of transport processes in cells: simple diffusion, facilitated diffusion, active transport, pinocytosis, receptor- mediated endocytosis, phagocytosis, and exocytosis.
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Factors that affect the rate of diffusion through a membrane include all of the following EXCEPT:
a)membrane surface area.
b) molecular weight.
c) availability of energy.
d) steepness of concentration gradient.
Describe the permeability of cell membranes. How to substances cross cell membranes? Utilize the terms bi-polar, semi-permeable, diffusion, active transport, membrane proteins, endocytosis, exocytosis, vesicles, phagocytosis, pinocytosis, etc. (This should be 3-4 paragraphs long)
Define and provide an example for each of the following: simple diffusion, facilitated diffusion, osmosis, passive transport and active transport.
Chapter 5 Solutions
Biology: Life on Earth
Ch. 5 -
1. Membranes consist of a bilayer of ________....Ch. 5 - A membrane that is permeable to some substances...Ch. 5 - Facilitated diffusion involves either _____...Ch. 5 - Prob. 4FTBCh. 5 -
5. After each molecule, place the two-word term...Ch. 5 - Prob. 6FTBCh. 5 - Describe and diagram the structure of a plasma...Ch. 5 - Prob. 2RQCh. 5 - What are the five categories of proteins commonly...Ch. 5 - Prob. 4RQ
Ch. 5 -
5. Define hypotonic, hypertonic, and isotonic....Ch. 5 -
6. Describe the following types of transport...Ch. 5 - Name the protein that allows facilitated diffusion...Ch. 5 - Imagine a container of glucose solution, divided...Ch. 5 - Prob. 9RQCh. 5 -
1. Different cells have different plasma...Ch. 5 - Predict and sketch the configuration of...Ch. 5 - The fluid portion of blood, in which red blood...Ch. 5 - Some cells in the nervous system wrap themselves...
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- Explain the differences among diffusion, facilitated diffusion, active transport, and endocytosis.arrow_forwardProteins which are only on one side of the plasma membrane and may not interact with the phospholipids directly. The proteins are often involved in intracellular signialing. a) cholesterol b) peripheral protein c) integral proteins D) glycolipidarrow_forwardDescribe the basic factors in diffusion and passive transportsystems.arrow_forward
- Which 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_forwardDescribe the passive processes of membrane transport, including simple diffusion, facilitated diffusion, and osmosis.arrow_forwardDistinguish between simple diffusion, facilitated diffusion, and active transport.arrow_forward
- What do facilitated diffusion, primary active transport and secondary active transport have in common? a) their ability to transport molecules depends on a membrane protein b) they utilize energy in the form of ATP to move molecules c) they move small, lipophilic molecules across the membrane d) they can move molecules against a concentration gradientarrow_forwardDistinguish between passive and active transport mechanisms across cellmembranes.arrow_forwardDefine active transport, facilitated diffusion, and passive transport.arrow_forward
- 1) 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_forwardMagnesium ions are in higher concentration inside the cell. What process would the magnesium ions use to enter the cell? Hint: drawing a picture may help you. A) receptor-mediated endocytosis B) active transport C) simple diffusion D) osmosis E) Facilitated diffusionarrow_forwardDistinguish active transport from passive transport; phagocytosis and pinocytosis.arrow_forward
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