Sponge: Set up Cornell Notes on pg. 9 Topic: 1.2 Levels of Organization Essential Question: Explain how organs and organ systems are related. Text: P Atoms, Ions, and Molecules Explain how organs and organ systems are related. 1.2 Levels of Organization Vocabulary: Subatomic particles Atoms Molecule Macromolecule Organelle Cell Tissue Organ Organ system Organism

Objective Explain the levels of organization of the human body : Students will understand the levels of organization in the human body The students will create a picture flow map showing the levels of organization of a human body system of their choice

3 Levels of Organization

4 Subatomic Particles – electrons, protons, neutrons Molecule – Atoms bound together Macromolecule – Molecules bound together Atom – Basic unit of matter

Organelles: Carry out specific activities in the cell Exs: Mitochondria- powerhouse of cell Nucleus- contains genetic info (DNA)

Cells: Basic unit of life. Organisms are made up of specialized cells that each have a particular structure that enables it to perform a specific task Exs: Red blood cell- delivers oxygen to all tissues Nerve cell- provides a pathway for electrochemical nerve impulses

cell Tissues: are groups of similar cells working together to perform a specialized function tissue Exs: Epithelial tissue Muscle tissue

Organs: are different types of tissues working together to perform a function Exs: Stomach Liver Lungs

Organ systems: two or more organs working together to perform a function Perform the most complex activities in the body Exs: Respiratory system Circulatory system Digestive system

There are 11 major organ systems in the human body (p. 856 in bio book)

Organism: The organ systems make up the entire organism. For the organism to stay alive, all of the systems must interact and work together.

12

Levels of Organization (2m29s)

Levels of Organization Flow Map Example Cells Organ Organ System Tissue Organism Epithelial lung cell Epithelial lung Tissue Lungs Site where gases are exchanged Respiratory System Brings O² for cells Expels CO² and water vapor Nose, sinuses, pharynx, larynx, trachea, lungs Human

Levels of Organization Flow map 1. Start by picking your organ system, organ, etc… You MAY NOT use the respiratory system

Levels of Organization Flow Map (p. 8) Cells Organ Organ System Tissues Organism Type of Cell Type of Tissue Name of specific organ Function of your organ Name of organ system Function of your organ system Include list of organs involved Name your organism Picture Cells/Organelles p Systems/Organs p BIO book *856 Internet Ex: lung cell Ex: lung tissue Ex: lung Ex: Respiratory System Ex: Human

Summary Matter is composed of atoms, which themselves are composed of subatomic particles. Atoms join to form molecules Molecules interact to make organelles Organelles make up cells Cells are organized into layers called tissue Tissues are organized into organs Organs form organ systems Organ systems make up an organism These parts vary in complexity progressively from one level to the next