intro to biology part 2
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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: - PowerPoint PPT PresentationTRANSCRIPT
By: Amelia Sommer, Madison Jones, Marikit Mendiola, Sean Nguyen
Per. 1
INTRO TO BIOLOGY PART 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.
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
LANGUAGE OF SCIENCE
LANGUAGE OF SCIENCE
• Examples:• Biology• Geology• Microbiology• zoology
PROCEDURE WRITING
• Write each step out
• Make it detailed
• Conclusion should be precise and to the point
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
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
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
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
LABELED MICROSCOPE
Review
(answers on final slide)
MULTIPLE CHOICE Q’S
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
Match the word with the definition:
• 1) Anthropology
• 2) Gymnosperm
• 3) Cytology
• 4) Hypodermic
• (prefix and suffix list on slide #4)
• A) study of cells
• B) study of humans
• C) uncovered seed
• D) below skin
QUESTION #2
• Match each with the definition:
• 1) quantitative
• 2) qualitative
• 3) biology
• 4) neuralgia
• A) descriptive data
• B) study of life
• C) numeric data
• D) nerve pain
QUESTION #3
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
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
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
• Match each letter with the correct number
• 1) diaphragm
• 2) objective lense
• 3) eye piece
• 4) base
QUESTION #7
QUESTION #8• What does the prefix carn- mean?
• A) ten
• B) lungs
• C) eat
• D) meat
QUESTION #9• True or false
• Grow and develop is a characteristic of a living thing
• Qualitative is numeric data
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
• 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
• 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
ANSWER KEY