bio unit 1: levels of organization

How are living things organized? List in order

Cells → tissues → organs → organs systems → organism

What is the difference between cells in multicellular and unicellular organisms?

Multicellular→ specialized functions

Unicellular→ no function

What are tissues made of?

Groups of cells that are similar in shape and function. (Tissues are made of only one type of cells)

What are organs?

Various tissues organized into larger structures with one main function.

(Heart is for pumping blood. Made of epithelial, muscle, etc cells)

What are organs systems?

Groups of related organs. Grouped by function.

Heart, vessels, arteries → circulatory system

What is the smallest unit of life?

Cells