Transcript Chapter 1 Biology:Investigating the Cycles of Life

Chapter 1
Biology:Investigating the
Cycles of Life
Lab Biology
Mrs. Campbell
Lesson 1
What is Biology?
• Biology – the study of life
• Organism – a living thing; one of many
different forms of life
• Biologist – a person who studies life or
biology
• Cycle – a course or series of events or
operations that repeats
Lesson 2 Energy and Growth Cycles
Energy Cycles
• Energy – the ability to do work. Energy is
found in many different forms.
• Transform – to change form.
• Law of Conservation of Energy states that
energy can not be created or destroyed.
• Heat – a form of energy resulting from
the motion of particles in matter.
Lesson 2, Energy and Growth Cycles con’t
Growth Cycles
• Reproduction – the process of making new
life.
• DNA – Deoxyribonucleic acid is a chemical
in an organism that contains the
instructions for life.
• Cell – the basic unit of life.
• Proteins – a chemical used by cells to grow
and work.
Lesson 3
Evolutionary and Ecology Cycles
• Evolution – the changes in a population
over time.
• Species – a group of organisms that can
reproduce with each other.
• Speciation – the process of making a new
species.
• Extinct – when no members of a species
are alive.
Lesson 3, con’t
Evolutionary and Ecology Cycles
• Adaptation – an adjustment to
environmental conditions.
• Environment – an organism’s natural
and man-made surroundings.
• Ecology – the study of interactions
among living things and the nonliving
things found in any particular area.
Lesson 3, con’t
Evolutionary and Ecology Cycles
• Ecologist – a person who studies
ecology.
• Ecosystem – all of the living and
nonliving things found in a particular
area.
• Stimulus – anything to which an
organism reacts.
Lesson 4
The Scientific Method
• Specimen – a sample; an individual
item or part considered typical of a
group or whole .
• Scientific Method – a series of steps
used to test possible answers to
scientific questions.
• Observation – Looking at the world
around us, watching life.
Lesson 4, con’t
The Scientific Method
• Question – When scientists see something
they don’t understand, they ask a question
and try to find an answer.
• Hypothesis – an educated guess.
• Experiment – the procedure used to test
whether a hypothesis is correct or not.
• Control Group - the set-up in the
experiment that has no factor or variable
to be tested.
Lesson 4, con’t
The Scientific Method
• Experimental Group – the same group as
the control group, except for one
factor, or variable, to be tested.
• Variable – the factor that is being
tested in an experiment.
• Data – information collected from
experiments.
Lesson 4, con’t
The Scientific Method
• Analysis – making sense of the results
of an experiment.
• Communication – After checking
results, scientists share the results
with others.
• Theory – a well-tested explanation
that makes sense of a great variety
of scientific observations.