Welcome to Biology Welcome to Biology ClassClass

What is Biology Anyways?What is Biology Anyways?

Why do I need to know about Biology?Why do I need to know about Biology?

What is BIOLOGY?What is BIOLOGY?

OLOGY= StudyOLOGY= Study

BIO = LifeBIO = Life So Biology is the ………So Biology is the ………

““STUDY OF LIFE”STUDY OF LIFE”

The science that employs the scientific method The science that employs the scientific method to study living things.to study living things.

How do organisms get arranged How do organisms get arranged in life?in life? What would it take to be considered an What would it take to be considered an

organism?organism?

An orderly structureAn orderly structure Be able to produce offspringBe able to produce offspring Ability to grow and developAbility to grow and develop Adjust to changes in environment.Adjust to changes in environment.

Organisms interactions:Organisms interactions:

Organism rely on each other and the Organism rely on each other and the environment for survival.environment for survival.

They form a web of life or food chain.They form a web of life or food chain. What is a web of life or food chain?What is a web of life or food chain?

Web of lifeWeb of life

Organisms in an ecosystem can be grouped Organisms in an ecosystem can be grouped by the way they acquire & contribute food. by the way they acquire & contribute food.

Characteristics of Living/Non Characteristics of Living/Non Living things.Living things.

What are some characteristics of living things? What are some characteristics of living things? Examples?Examples?

What are characteristics of non living things?What are characteristics of non living things?Examples?Examples?

Living = OrganismLiving = Organism

Must have an orderly structureMust have an orderly structure

Must be able to produce offspringMust be able to produce offspring

Must be able to grow and developMust be able to grow and develop

Must adjust to changes in environmentMust adjust to changes in environment

What are on non living What are on non living things?things? Some non living things may have some of the Some non living things may have some of the

criteria to be living BUT, they must show ALL criteria to be living BUT, they must show ALL OF THE REQUIREMENTS. OF THE REQUIREMENTS.

Example: an iPod- it has an orderly structure but Example: an iPod- it has an orderly structure but non of the other criteria are metnon of the other criteria are met

= non living= non living

Lets go outside and see what we Lets go outside and see what we can find!!!!!can find!!!!! I will put you in groups of 2 .I will put you in groups of 2 . You need to obtain a bag from the front table.You need to obtain a bag from the front table. You will then, You will then, (in an orderly fashion)(in an orderly fashion) go go

outside and collect 1 living and 1 non living outside and collect 1 living and 1 non living things. things.

When you have finished gather in a group When you have finished gather in a group near the outside door.near the outside door.

Characteristics of living things: What are they? Made up of cells Reproduce Universal genetic code Grow and develop Obtain and use energy Respond to their environment Maintain and stabilize their internal

environment As a group, living things change over time

Organization or OrganismsOrganization or Organisms

Organization = StructureOrganization = Structure

What gives something its structure?What gives something its structure? One or more cellsOne or more cells Genetic make up =DNAGenetic make up =DNA

Organization continued….Organization continued….

If something is living it has a cellular If something is living it has a cellular organization.organization.

They all need to function (work) together in They all need to function (work) together in an orderly, living system.an orderly, living system.

Levels of Organization

Molecules Cells

Groups of Cells Organism Population Community Ecosystem Biosphere

Reproduction:Reproduction:

The producing of offspringThe producing of offspring

Why do we need to reproduce?Why do we need to reproduce?

What makes something a What makes something a species?species?

Growth and DevelopmentGrowth and Development

Organisms have to grow and developOrganisms have to grow and develop

Start with a single cell===Multiply====Start with a single cell===Multiply==== Characteristics start to formCharacteristics start to form Eventually, increase the amount of living Eventually, increase the amount of living

material=====material=====formation of a new formation of a new structurestructure

Growth can vary Growth can vary

Organisms and different species grow at Organisms and different species grow at different rates.different rates.

Look around you some have grown a lot Look around you some have grown a lot some a little in a few years.some a little in a few years.

Throughout historyThroughout history

Organisms and the rate that they change has Organisms and the rate that they change has been a gradual change but….. been a gradual change but…..

It is still going onIt is still going on

Rule of thumb: more cells the more the change.Rule of thumb: more cells the more the change.

Adapt to the EnvironmentAdapt to the Environment

Air, water, temperature, weather, … etc..Air, water, temperature, weather, … etc..

Predators/prey… if a new organism comes in Predators/prey… if a new organism comes in to town what is going to happen?to town what is going to happen?

Must have ability to respond to outside Must have ability to respond to outside stimulus.stimulus.

The key to be adaptive and a The key to be adaptive and a living thing.living thing. REQUIRES A STIMULUS.. SOMETHING REQUIRES A STIMULUS.. SOMETHING

ACTING ON IT.ACTING ON IT.

REQUIRES A REACTION OR RESPONSE.REQUIRES A REACTION OR RESPONSE.

Organisms reactions.. Organisms reactions.. + or – depends on Health + or – depends on Health Most healthy environments run along a Most healthy environments run along a

HOMEOSTASIS.HOMEOSTASIS. Maintain internal conditions suitable for survival.Maintain internal conditions suitable for survival.

Correct amount of food, water, temperature…. EtcCorrect amount of food, water, temperature…. Etc

All of the process in their lifetime depend on All of the process in their lifetime depend on ENERGY USE.ENERGY USE.

Adaptations: EvolutionAdaptations: Evolution

The organisms must adapt The organisms must adapt

Biologist study the adaptations that cause a Biologist study the adaptations that cause a permanent change or the arrival of a new permanent change or the arrival of a new speciesspecies

Known to be Evolution: the accumulation of Known to be Evolution: the accumulation of gradual change through time!!!gradual change through time!!!

Big Ideas in BiologyBig Ideas in Biology

Science is a way of knowingScience is a way of knowing Interdependence in NatureInterdependence in Nature Matter and EnergyMatter and Energy Cellular Basis of LifeCellular Basis of Life Information and HeredityInformation and Heredity Unity and Diversity of LifeUnity and Diversity of Life EvolutionEvolution Structure and FunctionStructure and Function HomeostasisHomeostasis Science Technology and SocietyScience Technology and Society