Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
Biology: Science for Life with Physiology (6th Edition) (Belk, Border & Maier, The Biology: Science for Life Series, 5th Edition)
6th Edition
ISBN: 9780134555430
Author: Colleen Belk, Virginia Borden Maier
Publisher: PEARSON
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Chapter 1, Problem 5LTB
Summary Introduction

Introduction:

The scientific hypothesis can be defined as an idea or explanation or a proposed explanation which is then tested through the scientific study and experimentation. It is based on some observation. It is usually more than a wild guess but less than a well-established theory.

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Consider an experiment in which subjects are given a pill to test its effectiveness in reducing the duration of a cold. Which of the following is the best way to treat the control group? (a) Give the control group two pills instead of one. (b) Do nothing with the control group. (c) Give the control group a pill that looks like the test pill but does nothing. (d) Let the control group choose whether or not to take any pills. (e) Expose the control group to the cold virus.
I am working on the scientific method and am confused on what a controlled variable is and what controlled treatment is?  I am also struggling to find the hypothesis to the following scenario:  Esther became interested in insulating while her parents new house was being built. She decided to determine which insulation transfer the least heat. She filled each of five jars half full with water. She sealed each jar with a plastic lid. Then she wrapped each jar with a different kind of insulation. She put the jars outside in direct sunlight. Later, she measured the temperature of the water and Jar.
You have a friend with a cold. He went to his doctor and was annoyed that his doctor would not prescribe an antibiotic to get rid of his cold. You decide you need to set the record straight.   Does your friend’s doctor think he has a bacterial infection? How do you know? Antibiotics only work against bacteria, and viruses are what cause colds and flu. In addition, they cause almost all cases of sinusitis, and bronchitis or chest colds are also due to viruses. So antibiotics won't do any good.     What sort of infection is your friend’s cold? How do you know based on his doctor’s actions?     How would you explain to your friend the importance of not taking an antibiotic for a cold?
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