Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 8TYU
SCIENTIFIC INQUIRY Imagine protein X, destined to span the plasma membrane. Assume that the mRNA carrying the genetic message for protein X has already been translated by ribosomes in a cell culture. If you fractionate the cells (see Figure 6.4), in which fraction would you find protein X? Explain by describing its transit through the cell.
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If you did a classic Pulse-Chase experiment to follow the path of a secreted protein, and you forgot to do the Chase, which of the following would you observe?
No radioactivity would be seen in any of the structures.
Radioactivity would increase first in rough ER, then Golgi Complex, then secretory vesicles, but it would remain high in all, never decreasing.
Nothing would change
Radioactivity would increase in all 3 structures simultaneously and stay high.
Describe, in detail, the steps involved in the synthesis of an integral membrane
protein located in the plasma membrane. Begin with the ribosome, end with the
plasma membrane.
Choose the correct order of events for protein synthesis of an INTEGRAL
MEMBRANE PROTEIN.
1. Translation occurs on a ribosome in the cytosol
2. Vesicle containing protein fuses with the Golgi apparatus.
3. Vesicle containing protein buds off the rough endoplasmic reticulum.
4. Vesicle containing protein fuses with the plasma membrane.
5. Transcription leads to generation of the MRNA.
6. Vesicle containing protein fuses with the rough endoplasmic reticulum.
5,1,6,4
5,3,2,4
2,6,3,4
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Chapter 6 Solutions
Campbell Biology
Ch. 6.1 - Prob. 1CCCh. 6.1 - Prob. 2CCCh. 6.2 - Briefly describe the structure and function of the...Ch. 6.2 - DRAW IT Draw a simplified elongated cell that...Ch. 6.3 - What role do ribosomes play in carrying out...Ch. 6.3 - Describe the molecular composition of nucleoli and...Ch. 6.3 - Prob. 3CCCh. 6.4 - Describe the structural and functional...Ch. 6.4 - Describe how transport vesicles integrate the...Ch. 6.4 - WHAT IF? Imagine a protein that functions in the...
Ch. 6.5 - Describe two characteristics shared by...Ch. 6.5 - Prob. 2CCCh. 6.5 - Prob. 3CCCh. 6.6 - Prob. 1CCCh. 6.6 - WHAT IF? Males afflicted with Kartagener's...Ch. 6.7 - In what way are the cells of plants and animals...Ch. 6.7 - Prob. 2CCCh. 6.7 - MAKE CONNECTIONS The polypeptide chain that makes...Ch. 6.8 - Prob. 1CCCh. 6 - Prob. 6.1CRCh. 6 - Explain how the compartmental organization of a...Ch. 6 - Describe the relationship between the nucleus and...Ch. 6 - Describe the key role played by transport vesicles...Ch. 6 - What does the endosymbiont theory propose us the...Ch. 6 - Describe the role of motor proteins inside the...Ch. 6 - Prob. 6.7CRCh. 6 - When a cell ingests a bacterium, what role does...Ch. 6 - Prob. 1TYUCh. 6 - Prob. 2TYUCh. 6 - Which of the following is present in a prokaryotic...Ch. 6 - Prob. 4TYUCh. 6 - Which cell would be best for studying lysosomes?...Ch. 6 - Prob. 6TYUCh. 6 - EVOLUTION CONNECTION (a) What cell structures best...Ch. 6 - SCIENTIFIC INQUIRY Imagine protein X, destined to...Ch. 6 - WRITE ABOUT A THEME: ORGANIZATION Considering some...Ch. 6 - SYNTHESIZE YOUR KNOWLEDGE The cells in this SEM...
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