Process standard 1

Process Standard 1: Observe and Measure – 1. Identify qualitative and quantitative changes in cells, organisms, populations, and ecosystems given conditions (e.g., temperature, mass, volume, time, position, length, quantity) before, during, and after an event. – 2. Use appropriate tools with accuracy and precision (e.g., microscope, pipette, metric ruler, graduated cylinder, thermometer, balance, stopwatch) when measuring cells, organisms, populations, and ecosystems. – 3. Use appropriate International System of Units (SI) (i.e., grams, meters, liters, degrees Celsius, and seconds) and SI prefixes (i.e., micro-, milli-, centi-, and kilo-) when measuring objects and/or events.

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_____________ Data information expressed in numbers 25 students 20 eggs 15 g Km. 8ml. 63 Quantitative

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9 10. Which measurement units best describe the size relationship of cells to organs? A centimeters to meters B meters to millimeters C millimeters to micrometers D micrometers to centimeters

Process Standard 3: Experimental Design

1. Evaluate the design of a biology laboratory experiment. 2. Identify the independent variables, dependent variables, controlled variables, and control set-up in an experiment. 3. Use mathematics to show relationships within a given set of observations (e.g., population studies, biomass, probability). 4. Identify a hypothesis for a given problem in biology investigations. 5. Recognize potential hazards and practice safety procedures in all biology activities.

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1.Make Observations 2.Identify a Problem 3.Hypothesis 4.Experiment 5.Results/Data 6.Conclusions/Findings This is the SCIENTIFIC METHOD…6 steps…you should really learn it 62

Anita is studying the factors that affect seed growth. She wants to test whether soaking seeds in water affects the sprouting process. Which should Anita measure to get the most useful results? A growth of 100 soaked seeds at a given temperature B growth of 100 regular seeds at different temperatures C growth of 50 soaked and 50 regular seeds at a given temperature D growth of 50 soaked and 50 regular seeds at different temperatures

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In her laboratory manual, Kimiko read that fluid should never be heated in a test tube sealed with a cork. What is the reason to avoid heating fluid in a sealed test tube? A The cork could become hot and catch fire. B The fluid would condense on the cork and contaminate experimental results. C It would be too difficult to add materials to the test tube. D Pressure could increase until the cork and fluid shoot out of the test tube.

Which of these is the most appropriate unit of measurement to determine the volume of an adult human’s stomach? A meter B kilogram C liter D kiloliter

Hazardous organisms, cut finger on glass, splashing