Biology: Concepts and Applications (MindTap Course List)
Biology: Concepts and Applications (MindTap Course List)
10th Edition
ISBN: 9781305967335
Author: Cecie Starr, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 29, Problem 1CT
Summary Introduction

To explain:

The penetration of lipid-soluble drugs into the blood-brain barrier and affects other cells.

Introduction:

Cerebrospinal fluid is a clear fluid that surrounds the brain and spinal cord. It is also present in the brain ventricles. The fluid serves as a cushion for the tissues of the spinal cord and brain. The fluid contains water with ions and nutrient molecules. It is rich in glucose and oxygen that are utilized by neurons for aerobic respiration.

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Q8. A researcher wants to study the effectiveness of a pill intended to reduce stomach heartburn in pregnant women. The researcher chooses randomly 400 women to participate in this experiment for 9 months of their pregnancy period. They all need to have the same diet. The researcher designs two groups of 200 participants: One group take the real medication intended to reduce heartburn, while the other group take placebo medication. In this study what are: Independent variable: Dependent variable: Control variable: Experimental group: " Control group: If the participants do not know who is consuming the real pills and who is consuming the sugar pills. This study is It happens that 40% of the participants do not find the treatment helpful and drop out after 6 months. The researcher throws out the data from subjects that drop out. What type of bias is there in this study? If the company who makes the medication funds this research, what type of bias might exist in this research work?
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