Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 12, Problem 12.5PS
QUANTITATIVE Interpreting Data. Each of the following statements summarizes the results of an experiment related to exocytosis or endocytosis. In each case, explain the relevance of the experiment and its result to our understanding of these processes.
(a) Addition of the drug colchicine to cultured fibroblast cells inhibits movement of transport vesicles.
(b) Certain pituitary gland cells secrete laminin continuously but secrete adrenocorticotropic hormone only in response to specific signals.
(c) Certain adrenal gland cells can be induced to secrete epinephrine when their intracellular calcium concentration is experimentally increased.
(d) Cells expressing a temperature-sensitive form of dynamin do not display receptor-mediated endocytosis after a temperature shift, yet they continue to ingest extracellular fluid (at a reduced level initially, and then at a normal level within 30–60 minutes).
(e) Brefeldin A inhibits cholesterol efflux in adipocytes (fat cells) without affecting the rate of cellular uptake and resecretion of apolipoprotein A-I in adipocytes.
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Find the FALSE sentence.
Select one:
a.
In osmosis, water diffuses across a selectively permeable membrane from the compartment with the lowest to the compartment with the highest solute concentration.
b.
Malignant tumors can give rise to metastases.
c.
Passive transport across the membrane requires ATP.
d.
The endoplasmic reticulum and the Golgi apparatus both collaborate to build the cell membrane.
Please help me with this question. More than one answer may be correct.
The rough endoplasmic reticulum ______.
Options:
A)
is the only site of protein synthesis in the cell.
B)
is a site where glycosylation of proteins takes place.
C)
is a site where cisternal maturation takes place.
D)
is a location where glutamate carboxylation of proteins take place.
E)
has a channel through its membrane called Sec61.
Stem cells: Where and when are they found, in animals and plants?
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What are some advantages and potential drawbacks of using them therapeutically?
Chapter 12 Solutions
Becker's World of the Cell (9th Edition)
Ch. 12 - How do differences in the structure and...Ch. 12 - Why is it necessary for material flowing through...Ch. 12 - What problems would you likely see in cells...Ch. 12 - What features of membrane lipids and proteins...Ch. 12 - Based on what you learned in this chapter about...Ch. 12 - How would an inhibitor of membrane fusion...Ch. 12 - What intracellular transport processes would you...Ch. 12 - What problems would a cell have if it could not...Ch. 12 - Although the plant vacuole resembles the lysosome...Ch. 12 - Why is it important for the biochemical reactions...
Ch. 12 - Compartmentalization of Function. Each of the...Ch. 12 - Endoplasmic Reticulum. For each of the following...Ch. 12 - Biosynthesis of Integral Membrane Proteins. In...Ch. 12 - Coated Vesicles in Intracellular Transport. For...Ch. 12 - QUANTITATIVE Interpreting Data. Each of the...Ch. 12 - Cellular Digestion. For each of the following...Ch. 12 - QUANTITATIVE Virus Entry by Endocytosis....Ch. 12 - Prob. 12.8PSCh. 12 - Sorting Proteins. Specific structural features tag...Ch. 12 - Prob. 12.10PSCh. 12 - Whats Happening? Researchers have discovered a...
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