Chapter 3 Cellular Organization

Unicellular Organisms

Unicellular Organism A single celled organism They do everything that you would expect of a living thing – grow, respond, reproduce, etc. Examples?

Unicellular Organimsm A single celled organism They do everything that you would expect of a living thing – grow, respond, reproduce, etc. Examples? bacteria, yeast, algae, volvox, paramecium, other protists

Unicellular Organimsm A single celled organism They do everything that you would expect of a living thing – grow, respond, reproduce, etc. Examples? bacteria, yeast, algae, volvox, paramecium, other protists Some may live in colonies

Multicellular Organisms

Multicellular organisms Organisms that are made up of many cells that work together. Have cell specialization

Multicellular organisms Organisms that are made up of many cells that work together. Have cell specialization –Cells only perform particular specialized functions within the organism Examples?

Multicellular organisms Organisms that are made up of many cells that work together. Have cell specialization –Cells only perform particular specialized functions within the organism Examples? RBC, nerve cells, muscle cells, pancreatic cells

Multicellular organisms Organisms that are made up of many cells that work together. Have cell specialization –Cells only perform particular specialized functions within the organism Examples? RBC, nerve cells, muscle cells, pancreatic cells -cells contain variety of organelles based on function

Levels of Organization Cells – basic building block of living things

Levels of Organization Cells – basic building block of living things Tissues – group of similar cells that perform a particular function –Examples?

Levels of Organization Cells – basic building block of living things Tissues – group of similar cells that perform a particular function –Examples? Muscle, epithelial, nervous, and connective

Levels of Organization Cells – basic building block of living things Tissues – group of similar cells that perform a particular function Organs – groups of tissues that work together –Example?

Levels of Organization Cells – basic building block of living things Tissues – group of similar cells that perform a particular function Organs – groups of tissues that work together –Example?- muscle made up of muscle tissue, nervous tissue, connective tissue

Levels of Organization Cells – basic building block of living things Tissues – group of similar cells that perform a particular function Organs – groups of tissues that work together Organ systems – a group of organs that work together to perform a specific function

Levels of Organization Muscle cell

Levels of Organization Muscle cell Smooth muscle tissue

Levels of Organization Muscle cell Smooth muscle tissue Organs

Levels of Organization Muscle cell Smooth muscle tissue Organs Muscle tissue Nerve tissue Connective tissue

Levels of Organization Muscle cell Smooth muscle tissue Organs Muscle tissue Nerve tissue Connective tissue Organ systems

Levels of Organization Muscle cell Smooth muscle tissue Organs Muscle tissue Nerve tissue Connective tissue Organ systems Esophagus Stomach Liver intestines