lesson overview lesson overview what is science? chapter 1 the science of biology
DESCRIPTION
Lesson Overview Lesson Overview What Is Science? Science as a Way of Knowing –Science is an organized way of gathering and analyzing evidence about the natural world.TRANSCRIPT
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Lesson OverviewLesson Overview What Is Science?What Is Science?
Chapter 1Chapter 1The Science of The Science of
BiologyBiology
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Lesson OverviewLesson Overview What Is Science?What Is Science?
• What is science?
• What are the goals of science?
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Lesson OverviewLesson Overview What Is Science?What Is Science?
Science as a Way of Knowing – Science is an organized way of
gathering and analyzing evidence about the natural world.
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Lesson OverviewLesson Overview What Is Science?What Is Science?Scientific Methodology:
The Heart of Science – What is the scientific method?
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Lesson OverviewLesson Overview What Is Science?What Is Science?
OBSERVATION• The act of
noting or perceiving objects or events using the senses.
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Lesson OverviewLesson Overview What Is Science?What Is Science?
“BASIC SCIENTIFIC METHOD”
• Ask Questions• Make Predictions
and Form a Hypothesis (statement that is tested)
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Lesson OverviewLesson Overview What Is Science?What Is Science?
“BASIC SCIENTIFIC METHOD”• Confirm Predictions with
Controlled Experiments– Experiment – a planned
procedure to test a hypothesis– Control Group – receives no
experimental treatment– Independent Variable – factor
that is varied– Dependent Variable – variable
that is measured
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Lesson OverviewLesson Overview What Is Science?What Is Science?
“BASIC SCIENTIFIC METHOD”• Draw
Conclusions• Publish Results
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Lesson OverviewLesson Overview What Is Science?What Is Science?
THEORY• A set of related
hypotheses that have been tested and confirmed many times.
• Theories allow scientists to make accurate predictions about new situations
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Lesson OverviewLesson Overview What Is Science?What Is Science?
Science and Society– What is the relationship between science
and society?
– Using science involves understanding its context in society and its limitations.
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Lesson OverviewLesson Overview What Is Science?What Is Science?Understanding and Using
Science – Understanding biology will help you
realize that we humans can predict the consequences of our actions and take an active role in directing our future and that of our planet.
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Lesson OverviewLesson Overview What Is Science?What Is Science?
• What is Biology?
• The study of life
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Lesson OverviewLesson Overview What Is Science?What Is Science?
Characteristics of Living Things– What characteristics do all living things share?
– Living things are: 1.made up of basic units called cells2.are based on a universal genetic code3.obtain and use materials and energy4.grow and develop5.Reproduce6.respond to their environment7.maintain a stable internal environment8.change over time
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Lesson OverviewLesson Overview What Is Science?What Is Science?Characteristics of Living
Things– Living things are made up of one or
more cells—the smallest units considered fully alive.
• Cells can grow, respond to their surroundings, and reproduce.
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Lesson OverviewLesson Overview What Is Science?What Is Science?
Characteristics of Living Things
– Living things are based on a universal genetic code.
– All organisms store the complex information they need to live, grow, and reproduce in a genetic code written in a molecule called DNA.
– That information is copied and passed from parent to offspring and is almost identical in every organism on Earth.
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Lesson OverviewLesson Overview What Is Science?What Is Science?Characteristics of Living
Things– Living things obtain and use material
and energy to grow, develop, and reproduce.
• The combination of chemical reactions through which an organism builds up or breaks down materials is called metabolism.
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Lesson OverviewLesson Overview What Is Science?What Is Science?
Characteristics of Living Things
– Living things grow and develop.
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Lesson OverviewLesson Overview What Is Science?What Is Science?
Characteristics of Living Things
– Living things reproduce, which means that they produce new similar organisms.
– Most plants and animals engage in sexual reproduction, in which cells from two parents unite to form the first cell of a new organism.
– Other organisms reproduce through asexual reproduction, in which a single organism produces offspring identical to itself.
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Lesson OverviewLesson Overview What Is Science?What Is Science?
Characteristics of Living Things
– Living things respond to their environment.
• A stimulus is a signal to which an organism responds.
• For example, some plants can produce unsavory chemicals to ward off caterpillars that feed on their leaves.
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Lesson OverviewLesson Overview What Is Science?What Is Science?Characteristics of Living
Things– Living things maintain a relatively
stable internal environment, even when external conditions change dramatically.
• All living organisms expend energy to keep conditions inside their cells within certain limits. This is called homeostasis.
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Lesson OverviewLesson Overview What Is Science?What Is Science?Characteristics of Living
Things– Over generations, groups of organisms
evolve, or change over time. • Evolutionary change links all forms of life to a
common origin more than 3.5 billion years ago.
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Lesson OverviewLesson Overview What Is Science?What Is Science?Performing Biological
Investigations– How is the metric system important in
science?
– Most scientists use the metric system when collecting data and performing experiments.
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Lesson OverviewLesson Overview What Is Science?What Is Science?Scientific Measurement: Common Metric Units