Post on 19-Jan-2018
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Lesson OverviewLesson Overview What Is Science?What Is Science?
Chapter 1Chapter 1The Science of The Science of
BiologyBiology
Lesson OverviewLesson Overview What Is Science?What Is Science?
• What is science?
• What are the goals of science?
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.
Lesson OverviewLesson Overview What Is Science?What Is Science?Scientific Methodology:
The Heart of Science – What is the scientific method?
Lesson OverviewLesson Overview What Is Science?What Is Science?
OBSERVATION• The act of
noting or perceiving objects or events using the senses.
Lesson OverviewLesson Overview What Is Science?What Is Science?
“BASIC SCIENTIFIC METHOD”
• Ask Questions• Make Predictions
and Form a Hypothesis (statement that is tested)
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
Lesson OverviewLesson Overview What Is Science?What Is Science?
“BASIC SCIENTIFIC METHOD”• Draw
Conclusions• Publish Results
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
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.
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.
Lesson OverviewLesson Overview What Is Science?What Is Science?
• What is Biology?
• The study of life
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
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.
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.
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.
Lesson OverviewLesson Overview What Is Science?What Is Science?
Characteristics of Living Things
– Living things grow and develop.
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.
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.
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.
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.
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.
Lesson OverviewLesson Overview What Is Science?What Is Science?Scientific Measurement: Common Metric Units