Organization of Living Things SC.6.L.14.1 Describe and identify patterns in the hierarchical organization of organisms from atoms to molecules and cells to tissues to organs to organ systems to organisms. ESSENTIAL QUESTION: How do the different levels of body organization work together so your body can function?

Bell Ringer There are levels of cellular organization within multicellular organisms. Which of the following statements is true? Tissues are made up of organs. Organs are made up of organisms. Cells are made up of organ systems. Organ systems are made up of organs.

I Do Guided Notes

Body Organization Atoms→ Molecules→ Cells→ Tissue→ Organ→ Organ System→ Organism *Not Living Atoms are the basic unit of all matter (living or not). Cells are the basic unit of all living things.

Many cells that together perform a function is a tissue. Cells Form Tissues Many cells that together perform a function is a tissue. There are four types of tissues: Connective (holds organs together) Epithelial (the lining of organs/skin) Muscular (used to move) Nervous (Sends messages to/from brain)

Tissues Form Organs Two or more tissues working together form an organ Example: Your heart is an organ that uses all types of tissue (epithelial, muscular, nervous and connective) to pump blood.

Organs Form Systems Organs working together make up organ systems There are 9 major organ systems in your standard:

Body Systems Assessed: Skeletal Respiratory Excretory Immune Reproductive Nervous Circulatory Digestive Muscular

Body Systems Make Up Organisms All of your body systems work together in order to maintain homeostasis. Homeostasis is a state of balance between all body functions. Regulating body temperature (98.6°F) Getting rid of water and waste

We Do- guided practice Patterns of Organization: Let’s arrange the following list in hierarchical order. Start with atoms and move up to organisms. Root Atoms Root system Molecules Tree Root cells Atoms Molecules Root Cells Root Root System Tree

We Do Collaborative Activity

Revisiting the Bell Ringer There are levels of cellular organization within multicellular organisms. Which of the following statements is true? Tissues are made up of organs. Organs are made up of organisms. Cells are made up of organ systems. Organ systems are made up of organs.*

You do time!

You Do Question #1 The body of a person or other mammal is a complex organism. The structure of the body has several levels of organization. Which of the following lists the structural levels of the body from smallest to largest? cell  tissue  organ  organ system  organism cell  organ  organ system  tissue  organism organ  organ system  cell  tissue  organism organ  organ system  tissue  cell  organism Correct Answer: A

You Do Question #2 Atoms combine to form molecules. Which of the following is another example of organization among living things? Tissues combine to form cells. Cells combine to form tissues. Organs combine to form cells. Organs combine to form tissues. Correct Answer: B

You Do Question #3 The diagram below represents the organizational levels of living things. Which of the following examples represents an example of the missing organizational level? Blood Heart Plasma Vein Correct Answer: B

Exit Ticket (Closing) How do the different levels of body organization work together so your body can function? (Answer on your notes sheet)