BIOLOGY
BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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Chapter 6.2, Problem 3EQ
Summary Introduction

To determine: The results of Altman and colleagues experiments to indicate that RNase P is a ribozyme.

Introduction: RNase P acts as a catalyst during the processing of transfer RNA (Ribose nucleic acid) molecules. RNase P contains two subunits- one is a RNA molecule that possesses 377 nucleotides and other is a small protein molecule having a mass of 14 kilo Dalton. Altman and his colleagues purified this RNase P molecule and studied their important properties.

Summary Introduction

To determine: The effect of Mg2+ (magnesium ions) concentration on the function of RNA (Ribose nucleic acid) subunit in RNase P.

Introduction: RNase P acts as a catalyst during the processing of transfer RNA (Ribose nucleic acid) molecules. RNase P contains two subunits- one is a RNA molecule that possesses 377 nucleotides and other is a small protein molecule having a mass of 14 kilo Dalton. Altman and his colleagues purified this RNase P molecule and studied their important properties.

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After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.)   Data Table 1Stage    Totals    PercentInterphase        Mitosis:        Prophase        Metaphase        Anaphase        Telophase        Cytokinesis        Totals    100    100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…
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