Study Guide for Campbell Biology
Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 18, Problem 19TYK
Summary Introduction

Introduction: A morphogen is a substance made of peptide that determines the fate of a cell. The morphogen is non-uniformly distributed in the cell, and it controls the tissue formation and pattern development during the process of morphogenesis.

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See figure 12.16b regarding the process by which cyclin regulates the Cdk. Suppose that the cyclin binding site in the Cdk contains these FOUR amino acids in this order from top to bottom: serine, lysine, aspartic acid acid and lysine and the Cdk binding site in the cyclin contains these FOUR amino acids in this order from top to bottom: aspartic acid, aspartic acid, lysine and serine. Use the schematics below to show the R groups and how they might interact to create the cyclin.cdk complex. Label both binding sites, show all charges that will be used to create any bonds, and label all bonds formed and add the ATP active site. Cyclin Serine Lysine Aspartic "Acid Lysine -OH NH3t -Coo NH3+ NH3 + -OH Aspartic Aad Aspartic Acid /Lysine Serine сок
When Ras is activated, cells will divide. A dominant-negative form of Ras clings too tightly to GDP. You introduce a dominant-negative form of Ras into cells that also have a normal version of Ras. Which of the following statements is TRUE? O a. The normal Ras in the cells you create will not be able to bind GDP because the ion dominant-negative Ras binds to GDP too tightly. O b. The cells you create will divide more frequently compared to normal cells in response to the extracellular signals that typically activate Ras. c. The cells you create will divide less frequently than normal cells in response to the extracellular signals that typically activate Ras. O d. The cells you create will run out of the GTP necessary to activate Ras. Clear my choice
See figure 12.16b regarding the process by which cyclin regulates the Cdk. Suppose that the cyclin binding site in the Cdk contains these FOUR amino acids in this order from top to bottom: serine, lysine, aspartic acid acid and lysine and the Cdk binding site in the cyclin contains these FOUR amino acids in this order from top to bottom: aspartic acid, aspartic acid, lysine and serine. Use the schematics below to show the R groups and how they might interact to create the cyclin.cdk complex. Label both binding sites, show all charges that will be used to create any bonds, and label all bonds formed and add the ATP active site. A Explain what a kinase does and how the cyclin controls the activity of the Cdk.
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