Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Textbook Question
Chapter 16, Problem 16.7PS
Nuclear Structure and Function. Indicate the implications for nuclear structure or function of each of the following experimental observations.
- (a) Sucrose crosses the nuclear envelope so rapidly that its rate of movement cannot be accurately measured.
- (b) Colloidal gold particles with a diameter of 5.5 nm equilibrate rapidly between the nucleus and cytosol when injected into an amoeba, but gold particles with a diameter of 15 nm do not.
- (c) Nuclear pore complexes sometimes stain heavily for RNA and protein.
- (d) If gold particles up to 26 nm in diameter are coated with a polypeptide containing a nuclear localization signal (NLS) and are then injected into the cytosol of a living cell, they are transported into the nucleus. If they are injected into the nucleus, however, they remain there.
- (e) Many of the proteins of the nuclear envelope appear from electrophoretic analysis to be the same as those found in the endoplasmic reticulum.
- (f) Ribosomal proteins are synthesized in the cytosol but are packaged with rRNA into ribosomal subunits in the nucleus.
- (g) Treatment of nuclei with the nonionic detergent Triton X-100 dissolves the nuclear envelope but leaves an otherwise intact nucleus.
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Chapter 16 Solutions
Becker's World of the Cell (9th Edition)
Ch. 16 - Based on what you know about protein and DNA, why...Ch. 16 - The GC content of the DNA from a newly discovered...Ch. 16 - Prob. 1QCh. 16 - Changes in chromatin packing correlate with...Ch. 16 - You are studying a cytosolic protein, and your...Ch. 16 - Prior Knowledge. Virtually every experiment...Ch. 16 - DNA Base Composition. Based on your understanding...Ch. 16 - DNA Structure. Carefully inspect the...Ch. 16 - QUANTITATIVE DNA Melting. Figure 16-36 shows the...Ch. 16 - DNA Renaturation. You are given two samples of...
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