Organization of Living Things

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Atom Makes up all living and nonliving things

CellBasic unit of living things - 210 cell types

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muscle cell

blood cellMuscle cell

nerve cell

hair cell

stomach cell

TissueMany cells performing a function - blood, muscle, bone

OrganSeveral tissues working together - heart, root, liver, leaves

Organ SystemSeveral organs working together; circulatory system, digestive system, etc.

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IndividualOrgan systems working together!Snakes, maple tree, grasshopper

PopulationA group of individuals (school of fish)

CommunityAll living things in an area

EcosystemAll living and non-living things in an areaPrairie - grasses, hawk, snake, soil, etc.

Planet

Cell Basics

* Theories on formation* Types of cells* Differences in cells

Cell Formation- Which Theory?

A) Spontaneous Generation- the thought that living things can appear from nowhere- not true

All living things are made of cellsAll cells come from other cellsCells are the most basic unit of LIFE

Cell Theory

All Cells: Four Major Parts

• Cytoplasm• Cell Membrane• Genetic Material (DNA)• Ribosomes

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animalcell

Two Types of Cells:

A) Prokaryotic: simple cells with no nucleus(bacteria and archae)

pro = beforekaryo = nucleus

Two Types of Cells:

B) Eukaryotic: Larger cells with more organelles and a nucleus (plants, animals, fungus and protists)

eu = truekaryo = nucleus

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Two Types of Eukaryotic Cells:

Plant Cells: have a cell wall, central vacuole and chloroplasts

Two Types of Eukaryotic cells

Animals Cells: have no cell wall or chloroplasts

Differences in cells

Cells can be different sizes- bacteria v egg

Cells can be different shapes- blood cell versus muscle cell

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