Human Biology: Concepts and Current Issues (8th Edition)
Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Chapter 24, Problem 2CR
Summary Introduction

To review:

The effect of acid rain and smog.

Introduction:

When the pH (potential of hydrogen) of rainwater becomes lowers than 5, it is termed as acid rain. It is caused due to the increase in the sulfur dioxide (SO2) and nitrogen dioxide (NO2) released from anthropogenic activities. On the other hand, smog is a mixture of fog and smoke, which is released from the automobiles’ exhaust and from the burning of fossil fuels.

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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…

Chapter 24 Solutions

Human Biology: Concepts and Current Issues (8th Edition)

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