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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_____________ Datainformation expressed in numbers

25 students

20 eggs

15 g.

137.2 Km.

8ml.

63

Quantitative

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10.Which measurement units best describe the size relationship of cells to organs?

A centimeters to metersB meters to millimetersC millimeters to micrometersD micrometers to centimeters

Process Standard 3: Experimental Design

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 Observations2. Identify a Problem3. Hypothesis4. Experiment5. Results/Data6. Conclusions/Findings

This is the SCIENTIFIC METHOD…6 steps…

you should really learn it

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56.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 temperatureB growth of 100 regular seeds at different temperaturesC growth of 50 soaked and 50 regular seeds at a given temperatureD 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 ina test tube sealed with a cork. What is the reason to avoid heating fluid in asealed 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 mostappropriate unit of measurementto determine the volume of anadult human’s stomach?

A meterB kilogramC literD kiloliter

Hazardous organisms, cut finger on glass, splashing