Levels of organization

DO NOW MONDAY • Give the function (job) of each organelle below a. Nucleus e. Golgi body b. Cell membrane f. Vacuole c. Mitochondrion g. Lysosome d. Endoplasmic reticulum h. Cytoskeleton

TODAYS PLAN •Describe unicellular and multicellular organisms. •Identify/Describe cell, tissue, organ, organ system, and organism. •Distinguish between the differences among cells, tissues, organs, organ systems, and organisms. TODAYS DO •We will watch a short video about and discuss the levels of cellular organization and complete a graphic organizer. •We will answer questions about the levels of organization. •We will read and complete a handout about how the levels of organization are like the structure of a building. •Remember Cell Poster Projects are DUE TODAY!!

Life is organized into different levels based upon size (from small to large).

Organisms and Cells • Some organisms are unicellular. – This means they are made of only one cell. – Examples: bacteria, yeast • Some organisms are multicellular. – This means they are made of many cells. – Examples: humans, trees

Organisms and Cells • Unicellular organisms have nothing but a single cell. • However, multicellular organisms have many more levels of organization to make sure the whole body can work correctly, even when it is doing many things at the same time.

There are 5 Levels of Organization in Multicellular Organisms: • 1. Cells • 2. Tissues • 3. Organs • 4. Organ Systems • 5. Organisms

The cell is the basic unit of life. The paramecium above is made of only one cell and it must perform all the jobs of Cells are specialized the organism. by size and shape for the job they do. Example: skin cell

Word Cloud details can be found in the Notes section below

T I S S U E S Tissues are made of the same type of cells grouped together to do a specific job. 1 2 5 3 4 Example: Humans have four kinds of tissue in their Bodies: Epithelia, Muscle, Connective, and Nerve.