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Introduction to Biology Review

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Introduction to Biology Review Unit Target: Explore ways in which biologist use specific methods and tools to investigate questions and report their findings about ... – PowerPoint PPT presentation

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Title: Introduction to Biology Review


1
Introduction to Biology Review
  • Unit Target Explore ways in which biologist use
    specific methods and tools to investigate
    questions and report their findings about living
    things.

2
  • Learning Target Define biology. (knowledge)
  • The study of living things.

3
Learning Target Name four world problems 21st
century biologists are trying to solve.
(knowledge)
  • Which world problem that could be solved by
    biologists is missing?
  • -Creation of biofuels as an energy source
  • -Maintaining a diverse and healthy environment
  • -Feeding the world
  • ?
  • -Providing healthcare for everyone

4
State the safety rules. (knowledge)
  • Broken glass should be
  • placed in the garbage can
  • pushed into the sink
  • swept into the broken glass bucket
  • left for the teacher to clean up
  • c. swept into the broken glass bucket.

5
  • Which of the following is not true?
  • Report all accidents or injuries to the teacher.
  • Wear safety goggles when mixing chemicals.
  • Clean up spilt chemicals with paper towels.
  • Keep flammable materials away from open flames.
  • c. Clean up spilt chemicals with paper towels.

6
  • What is the safest way to dress for lab?
  • Long pants, closed shoes, long hair tied back
  • Shorts, sandals and a loose T-shirt
  • a.

7
Given a situation determine the proper safety and
first aid procedures. (reasoning)
  • Truth or Baloney? Correct if baloney.
  • If your lab partner cuts their finger, have them
    wash it off in the eye wash station.
  • Baloney. Sink

8
  • If your clothes catch on fire, panic!
  • Baloney. Stop, Drop and Roll
  • If someone faints, give them fresh air.
  • True

9
Describe the steps of the scientific method
(knowledge)
  • Put the steps of the scientific method in order.
  • 2 Hypothesis
  • 5 Conclusion
  • 1 Observe and determine the problem
  • 3 Experiment
  • 4 Record results

10
Match the step with its description
  • Detailed record of experimental results
  • The act of noticing and describing events in an
    orderly way
  • Testing of the hypothesis
  • A scientific explanation for a set of
    observations
  • Evaluation of the data to determine if it
    supports the hypothesis
  • Observe and question
  • State the hypothesis
  • Experiment
  • Record and analyze results
  • Conclusion

11
  • A scientific investigation always begins with
  • A question
  • An observation
  • A hypothesis
  • An experiment
  • b. An observation

12
  • Circle the best answer.
  • The parts of the experiment that are kept
    constant are called the (controls/ variables )
  • The variable we deliberately change is called the
    (dependant / independent ) variable
  • The sky is blue would be an example of
    (qualitative / quantitative ) data.

13
  • Which of the following is an important aspect of
    an experiment?
  • It should be kept secret until the hypothesis is
    confirmed
  • It should be published without discussion
  • It should be replicated once.
  • It should contain detailed information about
    conditions, controls, data, etc.
  • d. It should contain detailed information about
    conditions, controls, data, etc.

14
  • A conclusion does not
  • state if the hypothesis is accepted or rejected.
  • state possible sources of errors
  • include a well developed graph
  • make suggestions for future studies
  • c. Include a well developed graph

15
Given an example identify the step of the
scientific method. (reasoning)
  • 20 grams
  • Collect and analyze data
  • If the rabbit eats the dandelion, than the rabbit
    will have yellow poop.
  • Hypothesis

16
Learning Target Identify independent
(manipulated) and dependent (responding)
variables and factors held constant. (reasoning)
  • Students wanted to know if the temperature of the
    school pond varied each hour of the day. In a 24
    hour period they took the temperature of the pond
    at the beginning of each hour and recorded their
    results.
  • What is the independent variable?
  • Time of day
  • What is the dependant variable?
  • Temperature of the pond

17
  • Explain the importance of controls in an
    experiment.
  • They allow us to determine what variable is
    responsible for causing the results.

18
Take metric measurements using the tools of
biologists (skill)
  • What is the length of the leaf in cm? mm?

cm 5.2 cm and 52 mm
19
  • What is the volume of the liquid in the graduated
    cylinder?

43 mL
20
  • What is the mass shown on the triple beam balance?

62.4 g
21
Learning Target Create a data table (product).
What is the independent variable? Exercise What
is the dependant variable? Heart rate What are
the units? Beats per minute Is this quantitative
data? Yes
Comparison of Heart Rate Before and After Exercise
Group Heart Rate Before Exercise (Beats Per Minute) Heart Rate After Exercise (Beats Per Minute)
1 65 110
2 60 100
3 70 120
Avg. 65 110
22
Learning Target Identify the parts of a graph
(knowledge)
How would you improve this graph? Title More
informative, Never use I. Y axis- Label
23
What is the independent variable on this
graph? Days Is the x axis represented by
Degrees in Fahrenheit or Days? Days On what day
did the temperature reach 50 degrees? Day 3
24
Identify the parts of the microscope and explain
how each part functions. (knowledge)
  • What is letter A called?
  • Eyepiece
  • What is the magnification of the lens in the
    eyepiece?
  • 10x
  • What power objective should you always begin
    with?
  • Low power (4x)

25
  • What letter is pointing to the course adjustment?
  • C
  • What is the only power objective that can be used
    with the course adjustment?
  • Low power objective.
  • What letter would you use to adjust the light?
  • H (diaphragm)

26
Complete the table
Eyepiece Objective Total Magnification
10x 4x 40x
10x 10x 100x
10x 40x 400x
27
List the characteristics of living things.
(knowledge)
  • All living things are made of ________________
  • Living things have a ______________ code
  • All living things respond to _______________
  • All living things grow and ________________
  • Living things need _____________
  • Living things must maintain a balance known as
    __________________

homeostasis
cells
energy
stimuli
genetic
develop
28
  • Study Tips
  • Organize your assignments.
  • Refer to the review sheet.
  • Review this ppt. on-line
  • Study longer then you want to.
  • Get a good nights sleep
  • Good Luck!
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