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What is Biology?
Neubert CP Bio Spring Semester
In your journals copy the following Student Learning Map (SLM)
UEQ: What is Biology? How is biology studied?Science as a process
Biology Basics
1. What is the goal of science?
2. How do scientists test hypotheses?
3. How is a scientific theory developed?
Scientific methods, hypothesis, experiment, control, independent variable, dependent variable, safety symbol, data, theory
1. What are the characteristics that all living things share?
2. What are the benefits to studying biology?
Biology, organism, organization, reproduction, species, growth, development, environment, stimulus, response, homeostasis, energy, adaptation, evolution
WARM UP! 1/23/12Marvin the Martian steals a car from Earth and
takes it back to Mars as an example of life on Earth. The Martians state that this is not a good example of life.
Who is right? In your group, come up with an argument for or against Marvin’s idea that a car is a good example of Life from Earth.
Biology is the study of Life
Biologists study…• Interactions between living and nonliving
things• Diversity of life• Characteristics of living things• How life changes, adjusts, adapts and evolves
Interactions between living and nonliving things
• Because living organisms do not live in isolation, biologists study living and nonliving interactions. – Ex. Learning about a wild population
of rabbits requires knowledge of the plants they eat, and what preys on them.
Ex. Plants use CO2 from the atmosphere, and replenish O2 back into the atmosphere.
Diversity of life• Each organism has a role to play (niche) and so
there is great diversity among organisms.
Characteristics of living things• Can you name the nine characteristics of life?
9 Characteristics of Life
Gas exchange
Water Use energy
Eliminate waste
Respond to environment
Grow
Reproduce
Can die
Made up of cells
Metabolism• all chemical changes within cells considered all
together; the chemical reactions in the body's cells that convert the fuel from food into the energy needed to do everything from moving to thinking to growing.
How life changes, adjusts, adapts and evolves
• Any inherited structure, behavior, or internal process that enables an organism to respond to environmental factors and live to produce offspring is called an adaptation.
• Gradual changes over time through these adaptations is called evolution.
Activity
• Complete the worksheet and turn it in. Use your notes to complete the worksheet.
WARM UP! 1/24/12• In the 1940’s the brown tree snake was introduced
to the island of Guam. In 1965, a newspaper reported that this snake was beneficial to the island, because it ate rodents. However, a biologist walking through the woods noticed that there were no bird songs in the forest. – What was the original hypothesis about the brown tree
snake and it’s role on the island?– What might the hypothesis be of the biologist
mentioned above?– What’s one thing the biologist could do, to support her
hypothesis?
The Scientific Method• Common steps used by scientists to collect data and
answer questions. – Observation– Hypothesis– Experiment – materials and procedure
• Control• Independent variable – the variable that determines the outcome
of the experiment (x-axis)• Dependent variable – changes based on the independent variable
(y-axis)
– Data/results– Analysis/ Error analysis– Conclusion/discussion