Presentation on theme: "CH 1 REVIEW WHAT IS BIOLOGY This is my first attempt at putting a podcast on the wiki site. If you have problems or suggestions- please let me know."— Presentation transcript:
CH 1 REVIEW WHAT IS BIOLOGY This is my first attempt at putting a podcast on the wiki site. If you have problems or suggestions- please let me know.
WHAT DOES IT MEAN IF SOMEONE TELLS YOU IT IS IMPORTANT TO MAINTAIN A LARGE BIODIVERSITY? Hint Think of what would happen if there were only 4 types of food or animals left alive What would you need to do to (environment) make a species habitat more stable?
Quantitative- measured numbers- qualitative- description from your observations Hypothesis- idea before the experiment experiment – the test of your hypothesis Evolution- gradual change in a species adaptation- better fit your changing environment EXPLAIN HOW THE FOLLOWING ARE RELATED
Explain how the following are related Evolution- species change Development- is when an organism changes Data- material gathered result Independent - I chose what is to be tested Dependent variables (responding)- the change that results Organism- 1 living thing -species- a group of organisms that can interbreed and have fertile offspring.
EXPLAIN HOW THE FOLLOWING ARE RELATED Technology - science to solve problems- It can NOT solve all problems Not all bad or all good Ethics- moral/belief in what is right or wrong.
WHAT ARE THE ADVANTAGES of using graphs? List of numbers and charts are difficult to analyze. Graphs easily show relationships Of using the SI system of measurement? _______________ Fewer units Conversion is easier It is the standard used by all scientist
WHAT IS THE DIFFERENCE BETWEEN a hypothesis- educated guess (before test) Repeated verifications over time leads to the development of a theory a theory explains how nature works; supported by exp over time- continually verified. a laws- a law describes what nature does under certain conditions
EXPERIMENTS MUST HAVE AN EXPERIMENTAL GROUP, BUT NOT ALL WILL HAVE A CONTROL. WHY? Investigative research based on collecting observed data may not be appropriate to have a control. (not ethical or impractical) Controls are extremely useful where the experimental conditions are complex and difficult to isolate.
GIVE AN EXAMPLE OF Response- a reaction stimulus causes a response – Homeostasis Conditions in the body need to stay the same Sweat- hot cool Shivering-cool warm
What is the scientific method? What are the steps of the scientific method- in order? Problem, hypothesis, experiment, results, analyze, conclusion
LIST THE CHARACTERISTICS OF LIFE Organization- (orderly structure); cell produce offspring, reproduction grow (get larger)& develop (changes) adjust to changes in env.]; Adaptation
WHAT ARE THE CHARACTERISTICS OF LIFE FOR THE FOLLOWING? Organization- (orderly structure); produce offspring, grow & development; adjust to changes in env.] The lengthening of fingernails- grow Puberty - development Camouflage- adaptation
DRAW THE BASIC SAFETY SYMBOLS AND KNOW WHAT THEY MEAN Fire Poisons Biohazard Fume danger Do not use- sign
WHAT IS NEEDED TO DEVELOP A GOOD HYPOTHESIS? Is there an answer that would be yes/no- prove or disprove. An Experiment is an organized test with controlled condition. Control- part of exp that is the standard for comparison(does not include the experimental treatment). The experimental group is the test group that receives experimental treatment. In a controlled exp. Only 1 condition at a time is tested (independent variable). The dependent variable is the change that results (responding) Non control exp are used for investigation (field work).
IDENTIFY THE DEPENDENT (RESPONDS) AND THE INDEPENDENT VARIABLES (YOU CHOOSE TO TEST) What hair spray holds hair in place the best? What type of heater is most effective in heating a room?
The level of detail allowed by the tools available determines the accuracy in the experimental measurement. In the analysis of an exp. you determine how the results can be compared and if there are other conditions to consider or test. Use a journal to record the results (publish). To verify an exp it must be repeatable.
BE ABLE TO WRITE A SIMPLE EXPERIMENT- LAUNDRY DETERGENT AND IDENTIFY THE CONTROL- (DOES NOT INCLUDE THE INDEPENDENT VARIABLE) NO LAUNDRY DETERGENT INDEPENDENT VARIABLE- WHAT IS TESTED- LAUNDRY DETERGENT DEPENDENT – HOW CLEAN THE CLOTHES GOT
PG 1099 READ A CHART AND DRAW CONCLUSIONS L_HANDBOOK/OINFO.SHTML DRAW A GRAPH FROM INFORMATION PROVIDED IN A TABLE. ANALYZE THE ORGANIZED INFORMATION AND PROVIDE CONCLUSIONS BASED ON THAT ANALYSIS. L_HANDBOOK/OINFO.SHTML