Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 40, Problem 3DAA
Summary Introduction

To determine: Whether switching to an organic diet lower the amount of pesticide residues excreted by the children.

Concept introduction: Conventionally, the fruits, vegetables, and grains are produced in which pesticides are used. Pesticides such as malathion and chlorpyrifos are neurotoxicant. At the high level, it works by inhibiting acetylcholinesterase.  This can lead to paralysis, breathing problem, and even death. Due to its toxic effect, the fruits and vegetable are produced through organic farming without the use of pesticides and gain the label of USDA’s organic label.

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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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