Levels of Organization + Animated

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Living Things are Highly Organized:

Living Things are Highly Organized Levels of Organization


Characteristics of Living Things 1.Made Up of Cells 2. Reproduction 3. Based on a Genetic Code 4. Growth and Development 5. Need for Materials and Energy 6. Response to the Environment 7. Maintaining Internal Balance 8. Evolution


Characteristic Examples Living things are made up of units called cells. Living things reproduce. Living things are based on a universal genetic code. Living things grow and develop. Living things obtain and use materials and energy. Living things respond to their environment. Living things maintain a stable internal environment. Taken as a group, living things change over time. Many microorganisms consist of only a single cell. Animals and trees are multicellular. Maple trees reproduce sexually. A hydra can reproduce asexually by budding. Flies produce flies. Dogs produce dogs. Seeds from maple trees produce maple trees. Flies begin life as eggs, then become maggots, and then become adult flies. Plants obtain their energy from sunlight. Animals obtain their energy from the food they eat. Leaves and stems of plants grow toward light. Despite changes in the temperature of the environment, a robin maintains a constant body temperature. Plants that live in the desert survive because they have become adapted to the conditions of the desert. Characteristics of Living Things

Levels of Organization:

Levels of Organization Biosphere Biomes Ecosystem Community Population Organism Organ System Organ Tissue Cell Organelles Compound/Molecule Element Atom


The Biosphere the thin layer of the earth that supports life. If the earth was the size of an apple, the biosphere would be the thickness of its skin.

1. The Biosphere:

1. The Biosphere Part of the earth in which life exists. Its range = 8 km. above surface to 8 km. below surface of ocean. All living AND non-living things Divided into - Biomes.

2. Biomes :

2. Biomes Specialized regions of the biosphere Tiaga, Desert, Tundra, Grassland Biomes into Ecosystems

3. Ecosystems:

3. Ecosystems All biotic (living) and abiotic (nonliving) factors that INTERACT . Biotic factors: Living Abiotic factors: soil, water, temperature, elevation, and location on the earth. Examples of ecosystems: forest, pond, lake, grassland, and mountain.


An ecosystem is a community plus its non-living (abiotic) environment. Biotic Factor Abiotic Factor


4. A community is a group of interacting populations. Is he trying to tell me something?


A community includes all the living things ( biotic factors ) in one place. It contains no abiotic factors .


5. A population is group of interacting and interbreeding organisms. Members of a population must be all the same species. Hey Marty, tell those two to keep their interaction PG.


6. An organism has all the characteristics of life. Yuh know me; I keep it homeostatic.


http://www.phschool.com/science/ca_sci_exp_transparencies/earth_sci_unit5.pdf Biology’s levels of organization . . .

Organ Systems:

Organ Systems Groups of organs that work together to perform a specific function Examples Nervous System Circulatory System Respiratory System Etc….


Organ Systems Groups of organs that work together to perform a specific function Examples Nervous System Circulatory System Respiratory System Etc…. Living


Organs Group of tissues that work together to perform closely related functions Examples Heart Brain Lungs Etc…


Tissue The same kind cell working together Living


Cell Made of organelles Basic unit of structure & function LIVING


Organelles “Tiny organs” Made of macromolecules


Macromolecule Very large molecules Proteins, fats, carbohydrates, nucleic acids NON-living


Molecules 2 or more bonded atoms Form compounds NON-living


Elements Molecules are made up of element interacting with one another Elements are what are found on the periodic table The elements C, H,O, N, P, S make up 96% of all living things


ATOMS Smallest part of matter NON-living


Biosphere Ecosystem Community Population The part of Earth that contains all ecosystems Community and its nonliving surroundings Populations that live together in a defined area Group of organisms of one type that live in the same area Biosphere Hawk, snake, bison, prairie dog, grass, stream, rocks, air Hawk, snake, bison, prairie dog, grass Bison herd Section 1-3 Levels of Organization


Organism Groups of Cells Cells Molecules Individual living thing Tissues, organs, and organ systems Smallest functional unit of life Groups of atoms; smallest unit of most chemical compounds Bison Nervous tissue Nervous system Brain Nerve cell Water DNA Section 1-3 Levels of Organization ( cont.)



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