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Transcript of Lesson Overview Lesson Overview Studying Life Bell Ringer What is the difference between a...
Lesson OverviewLesson Overview Studying LifeStudying Life
Bell RingerWhat is the difference between a hypothesis and a scientific theory?
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Lesson OverviewLesson Overview Studying LifeStudying Life
Bell RingerWhat are 2 benefits of being able to produce / make human organs?
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Lesson OverviewLesson Overview Studying LifeStudying Life
Bell RingerWhat is an easy way to remember how to convert units in the metric system?
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Lesson OverviewLesson Overview Studying LifeStudying Life
Lesson OverviewLesson Overview1.3 Studying Life1.3 Studying Life
Lesson OverviewLesson Overview Studying LifeStudying Life
Daily Objectives
-List the characteristics that all living things share.-Identify the central themes of biology.-Explain how life can be studied at different levels.
Lesson OverviewLesson Overview Studying LifeStudying Life
Characteristics of Living ThingsBiology is the science that employs the scientific method to study the living world
What are some characteristics of living things?
Lesson OverviewLesson Overview Studying LifeStudying Life
Characteristics of Living ThingsLiving things share the following characteristics:
1. Made up of units called cells2. Based on a universal genetic code (DNA)3. Obtain and use matter and energy4. Grow and Develop5. Reproduce6. Maintain a stable internal environment7. Change over time8. Respond to their environment
Lesson OverviewLesson Overview Studying LifeStudying Life
Cellular Basis of LifeOrganisms are composed of one or more cells,
which are the smallest units that can be considered fully alive.
Cells can grow, respond to their surroundings, and reproduce.
Plant Cell Bacterial Cell
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Cellular Basis of LifeIf an organism is composed of only a single cell it is referred
to as a unicellular organism.The cells in multicellular organisms (many celled) are
remarkably diverse, existing in a variety of sizes and shapes.
Ex. The human body alone is made up of at least 85 types of cells.
Red Blood Cells
Lesson OverviewLesson Overview Studying LifeStudying Life
Information and HeredityThe genetic code is common, with minor variations, to
every organism on Earth.That information, carried in DNA, is copied and passed
from parents to offspring (Children).
Lesson OverviewLesson Overview Studying LifeStudying Life
Matter and EnergyMatter serves as nutrients to build body structures
and energy is used to fuel the processes of life.
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Matter and EnergyPlants obtain energy from sunlight and take up the
nutrients they need from air, water, and soil.
Animals must consume other organisms to obtain both nutrients and energy.
Lesson OverviewLesson Overview Studying LifeStudying Life
Growth and DevelopmentGrowth = When an organism gets bigger or increases in
sizeExample: Lifting Weights
Development = When an organism gets more complex or specialized
Example: Puberty
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ReproductionAll organisms produce new organisms through a process called
reproduction. Sexual Reproduction – Cells from two different parents unite to produce the first cell of the new organism.
Asexual Reproduction – The new cell has a single parent.Ex. Budding
Lesson OverviewLesson Overview Studying LifeStudying Life
HomeostasisAn organism’s ability to maintain a relatively stable
internal environment.
Lesson OverviewLesson Overview Studying LifeStudying Life
EvolutionEvolution, or the change in living things over time,
explains inherited similarities as well as the diversity of life.
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Structure and FunctionStructures evolve in ways that make particular
functions possible, allowing organisms to adapt to a wide range of environments.
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Interdependence in NatureAll forms of life on Earth are connected together into a
biosphere, which literally means “living planet.”
Relationships between organisms and their environment depend on these processes:1.Flow of energy2.Cycling of matter
Lesson OverviewLesson Overview Studying LifeStudying Life
Science as a Way of Knowing-Science is not just a list of “facts.”-The job of science is to use observations, questions, and experiments to explain the natural world.
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Response to the EnvironmentOrganisms detect and respond to stimuli from their
environment.A stimulus is a signal to which an organism
responds.
Ex. Temperature, light, water, movement
Lesson OverviewLesson Overview Studying LifeStudying Life
Branches of Biology
• Zoologists (Animals)• Botanists (Plants)• Cell Biologists (Cells)• Geneticists (DNA)• Ecologists (Environment)
Lesson OverviewLesson Overview Studying LifeStudying Life
Branches of BiologySome of the levels at which life can be studied include:
• Molecules• Cells• Tissues• Organisms• Populations• Communities• Biomes• The Biosphere
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Branches of Biology
MoleculesGroups of atoms; smallest unit of most chemical compounds
Water DNA
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Branches of Biology
CellsSmallest functional unit of life
Nerve cell
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Branches of Biology
Groups of CellsTissues, organs, and organ systems
Nervous tissue Brain Nervous system
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Branches of Biology
OrganismIndividual living thing
Bison
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Branches of Biology
PopulationGroup of organisms of one type that live in the same area
Bison herd
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Branches of Biology
CommunityPopulations that live together in a defined area
Hawk, snake, bison, prairie dog, grass
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Branches of Biology
EcosystemCommunity and its nonliving surroundings
Hawk, snake, bison, prairie dog, grass, stream, rocks, air