1 / 23

Intro to biology part 2

Intro to biology part 2. By: Amelia Sommer , Madison Jones, Marikit Mendiola , Sean Nguyen Per. 1. Scientific method. Hypothesis: a testable statement that can be shown to be true or false by experimenting or observation Experiment:

walda
Download Presentation

Intro to biology part 2

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Intro to biology part 2 By: Amelia Sommer, Madison Jones, MarikitMendiola, Sean Nguyen Per. 1

  2. Scientific method • Hypothesis: a testable statement that can be shown to be true or false by experimenting or observation • Experiment: Experimental Group: receives some kind of treatment or condition. • Independent Variable: Treatment or factor that is changed Control Group: receives no treatment, used to compare. It is important to have a control to compare and validate results.

  3. Cont. • Data: a scientist carefully collects and organizes data from the experiment. Data should always be presented in a neat fashion, usually tables. • Analysis: Data can be powerfully displayed as a graph • Conclusion: Based on the data, a scientist then determines whether the hypothesis was supported or refuted

  4. Language of science

  5. Language of science • Examples: • Biology • Geology • Microbiology • zoology

  6. Procedure writing • Write each step out • Make it detailed • Conclusion should be precise and to the point

  7. Chapter 1 reading guide • Quantitative: numeric data • 20 cats each weighing 20 lbs • Qualitative: descriptive data • All the cats are orange with purple stripes, and are soft

  8. Cont. • Controlled variable: factor that is purposely kept the same • Ex. Gravy boiled flask • Manipulated variable (independent): factor that is purposely changed • Flask is either sealed or unsealed • Responding variable (dependent): factor that is being observed, which may change in response to the manipulated variable • Growth of microorganisms

  9. Cont. • Observation: use of one or more senses to gather information • Variables: factor in an experiment that can change • Theory: well tested explanation that unifies a broad range of observations

  10. Characteristics of living things • Made up of cells • Reproduce • Based on universal genetic code • Grow and develop • Obtain and use materials and energy • Respond to their environment • Maintain a stable internal environment • Taken as a group and changed over time

  11. Labeled microscope

  12. Multiple choice q’s Review (answers on final slide)

  13. Question #1 • What is a hypothesis? • A) treatment or factor that is changed • B) well tested explanation that unifies a broad range of observations • C) testable statement can be shown true or false by experimenting or obersvation • D) use of one or more senses to gather information

  14. Question #2 • A) study of cells • B) study of humans • C) uncovered seed • D) below skin Match the word with the definition: • 1) Anthropology • 2) Gymnosperm • 3) Cytology • 4) Hypodermic • (prefix and suffix list on slide #4)

  15. Question #3 • A) descriptive data • B) study of life • C) numeric data • D) nerve pain • Match each with the definition: • 1) quantitative • 2) qualitative • 3) biology • 4) neuralgia

  16. Question #4 • Which is the definition of an independent variable? • A) factor that is purposely kept the same • B) factor that is purposely changed • C) testable statement that can be true or false • D) factor that is being observed which may change in response to the manipulated variable

  17. Question #5 • What does the coarse adjustment knob do? • A) holds the slide in place • B) moves the stage slightly to sharpen image • C) moves the stage up and down for focusing • D) used to support the microscope when carried

  18. Question #6 • What is the definition of variable? • A) use of one or more senses to gather information • B) factor in an experiment that can change • C) well tested explanation that unifies a broad range of observations

  19. Question #7 Match each letter with the correct number • 1) diaphragm • 2) objective lense • 3) eye piece • 4) base

  20. Question #8 • What does the prefix carn- mean? • A) ten • B) lungs • C) eat • D) meat

  21. Question #9 • True or false • Grow and develop is a characteristic of a living thing • Qualitative is numeric data

  22. Question #10 • Our elephant died this morning. We predicted it was of starvation. To test this hypothesis, we placed three elephants in the wild without food and left them there. 3 weeks later, we came back and the elephants were all still alive. Is the hypothesis proven correct? • A) yes • B) no

  23. Answer key • 6) Answer is B • 7)Answers: 1-D,2-B,3-A,4-C • 8) Answer is D • 9) Answers: true, then false • 10) no • 1) Answer is C • 2) Answers: 1-B, 2-C, 3-A, 4-D • 3) answers: 1-C, 2-A, 3-B,4-D • 4) Answer is B • 5) Answer is C

More Related