section1_ak

section1_ak - MIT Department of Biology 7.014 Introductory...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
MIT Department of Biology 7.014 Introductory Biology, Spring 2005 Recitation Section 1 Answer Key February 2-3, 2005 Biology as a Science Please read the following article. Class discussion will focus on the article, and center around the questions that follow. Please refer to the following article: Leake, Jonathan, Science editor. "Mobile phones can cut a man's fertility by a third." The Sunday Times - Britain , June 27, 2004.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1. Based on the article, what was the hypothesis tested in this study? The hypothesis was that heavy cell phone use negatively impacts sperm quality. 2. What was the experiment designed to test the hypothesis? To test the hypothesis, researchers followed a group of 221 men over the course of 13 months, and compared sperm quality results of the men who used cell phones with results of those who did not. 3. What were the conclusions drawn from the results of the experiment? Experimental results showed that men who used their cell phones heavily had sperm count that was 30% reduced when compared to men who did not use cell phones heavily. Moreover, they also found reduced morphology in the surviving sperm of the cell phone users. Researchers then concluded that heavy cell phone use causes reduced sperm quantity and quality. 4. Are there alternative hypotheses that fit the data? One alternative hypothesis is that heavy use of cell phones correlates with a life style that causes reduced sperm quantity and morphology. 5.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/02/2009 for the course BIOL 7.014 taught by Professor Walker during the Spring '05 term at MIT.

Page1 / 3

section1_ak - MIT Department of Biology 7.014 Introductory...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online