Contemporary Issues in Biology Exam #1 Questions and Answers

Contemporary Issues in Biology Exam #1 Questions and Answers Aristotle - Answer- the "father of biology" ...greater than what we understand - Answer- The information to be discovered is... theory - Answer- Once a hypothesis has been supported by repeated studies over long periods of time, it will eventually be accepted as the best explanation of event and may be called a... Two Group Experimental Design - Answer- - best way to test a hypothesis 1. identify variable which will test the hypothesis 2. Control group (placebo/no drug) and experimental group (drug/variable) 3. Record results 4. Compare and analyze test results 5. Report on experimental design, test results, and conclusions drawn from results Control group - Answer- given placebo the variable being tested in absent experimental group - Answer- given drug the variable being tested is present peer review - Answer- - Scientists in the field five anonymous reviews, accepting or rejecting the paper for publication - The reviewers cannot have any personal or professional relationship with the authors Science - Answer- What is the top journal in the field? It accepts less that 8% of the original research papers submitted Pseudo-science - Answer- - a system of ideas or misconceptions (hypotheses and theories) erroneously regarded as science - not based from the scientific method - appears to be scientifically based as it uses technical wording or due to its presentation dietary supplements - Answer- - more than half of U.S. adults use these - FDA regulation is less strict Why are dietary supplements legal? - Answer- - money --> big business - companies donated millions of $$ to congressional and presidential candidates to have them support keeping supplements legal *Why is the U.S. government still spending billions of dollars funding scientific research? - Answer- Why can nonscientists have confidence in the information published in the reputable popular press? - Answer- reputable popular press bases their information off of peer- reviewed knowledge from scientific journals testis - Answer- - site of gamete formation (sperm or spermatozoa) and testosterone production - seminiferous tubules (coiled tubules) - located in the scrotum, keeps testes at a cooler temperature (essential for proper sperm cell development) epididymis - Answer- - site of sperm cell maturation - chamber sitting on top of each testis - sperm stored and mature here vas deferens - Answer- - during sex, sperm cells travel from the epididymis up the right and left _________ into the body cavity - loop up over the ureters of the urinary system and arrive at the prostate gland - sperm then travel into a "tunnel" through the prostate gland called the ejaculatory duct pathway of sperm - Answer- seminiferous tubules in testes --> stored in epididymis --> vas deferens --> urethra accessory glands - Answer- - seminal vesicles - prostate gland - bulbourethral glands (Cowper's gland) seminal vesicles - Answer- mucus and fructose (nourishment for sperm) prostate gland - Answer- thin milky white fluid that contains nutrients for sperm bulbourethral glands (cowper's) - Answer- clear lubricating fluid that is alkaline and neutralizes the acid environment of the penile urethra composition of semen - Answer- - sperm from testes