BIO 181 Exam 1 Review QUESTIONS WITH COMPLETE SOLUTIONS

Define Biology correct answer: The scientific study of life and living things What is Science? correct answer: The systematic search for truth through experimentation and observation When does science work best? correct answer: In the tangible world Why should you make sure that your RESEARCH QUESTION is clear and precise? correct answer: 1. so you don't repeat something that has already been done 2. to receive help What exactly is a hypothesis? correct answer: one of many possible answers to a research question Describe 2 properties of a GOOD/USEFUL hypothesis correct answer: 1. valid (based on known facts) 2. testable (can generate predictions) What is the difference between a hypothesis and a theory correct answer: A theory has been accepted WHY would you use a CONTROL GROUP in a typical DRUG study correct answer: To account for all the differences in a population What is a milliliter? correct answer: A central unit of weight in them ethic system = to the weight of 1 cubic cm of pure water What is a mg? correct answer: A unit of measure in the metric system = to 1/1000g What is the BOILING POINT of water? correct answer: 100 degrees C What is human body temperature in centigrade degrees? correct answer: 37 How many lbs in a kg correct answer: 2.2 What is a meniscus? correct answer: The concavity that liquids form when confined in a container What is the Meniscus rule correct answer: 1. read volume from the bottom of meniscus 2. read at eye level Why tare the scale? correct answer: To get rid of the weight of the container What is an atom? correct answer: Matter that has mass and occupies space