–Biology is the study of life and can be used to both solve societal problems and explain aspects of our daily lives.

Living things share the same 7 characteristics: 1. Order (Organization of cells) 2. Stimulus Response 3. Homeostasis (Regulation) 4. Metabolism (Energy processing) 5. Growth and Development 6. Reproduction 7. Change over time (Evolutionary adaptation) Mrs. Goch

Order (Organization of Cells) Organization is the high degree of order within an organism’s internal and external parts and in its interactions with the living world. Organization is the high degree of order within an organism’s internal and external parts and in its interactions with the living world. Ex. owls and rocks- Which has more organization? Why?

Order (Organization of Cells) A cell is the smallest unit of an organism that can perform all life’s processes. A cell is the smallest unit of an organism that can perform all life’s processes. Multicellular organisms are made up of many cells and show a hierarchy of organization going from the organism to the atom. Multicellular organisms are made up of many cells and show a hierarchy of organization going from the organism to the atom. Unicellular organism Multicellular organisms

Levels of Organization Atoms: the simplest particle of an element that retains all the properties of a certain element. Atoms: the simplest particle of an element that retains all the properties of a certain element. Molecules: The chemical compounds that provide physical structure and that bring about movement, energy use, and other cellular functions. Molecules: The chemical compounds that provide physical structure and that bring about movement, energy use, and other cellular functions.

Levels of Organization Organelles: tiny structures that carry out functions necessary for the cell to stay alive. Organelles: tiny structures that carry out functions necessary for the cell to stay alive. Cells: Smallest unit that can perform all life’s processes. Cells: Smallest unit that can perform all life’s processes. Tissues: groups of cells that have similar abilities and that allow the organ to function. Tissues: groups of cells that have similar abilities and that allow the organ to function.

Levels of Organization Organs: structures Organs: structures that carry out that carry out specialized jobs. Organ systems: Organ systems: Made up of organs. Made up of organs. Organism: has a Organism: has a degree of organization.

Response to Stimuli Another characteristic of life is that an organism can respond to a stimulus Another characteristic of life is that an organism can respond to a stimulus A stimulus is a physical or chemical change in the internal or external environment. How is pupil dilation a response to stimuli?

Homeostasis(Regulation) All living things have mechanisms All living things have mechanisms that allow them to maintain stable internal conditions. Homeostasis is the maintenance of a stable level of internal conditions even though environmental conditions are constantly changing. Homeostasis is the maintenance of a stable level of internal conditions even though environmental conditions are constantly changing. Why does a dog pant? How does maintaining a constant body temperature relate to homeostasis?

Metabolism (Energy processing) Metabolism is the sum of all the chemical reactions that take in and transform energy and materials from the environment. Metabolism is the sum of all the chemical reactions that take in and transform energy and materials from the environment. How does eating support metabolism?

Growth and Development The growth of living things results from the division and enlargement of cells. The growth of living things results from the division and enlargement of cells. Development is the process by which an organism becomes a mature adult and cell specialization occurs. Development is the process by which an organism becomes a mature adult and cell specialization occurs. –It happens DURING a SINGLE organism’s lifetime. SINGLE organism’s lifetime.

Reproduction Living organisms pass on hereditary information from parents to offspring, also called reproduction. Living organisms pass on hereditary information from parents to offspring, also called reproduction. Is reproduction essential for life?

Change over time (Evolutionary Adaptation) Populations of living organisms evolve or change through time over many generations. Populations of living organisms evolve or change through time over many generations. Occurs through repeated reproductive success of one variation in a species over others. Occurs through repeated reproductive success of one variation in a species over others. –DOES NOT OCCUR DURING ONE LIFETIME OR IN 1 ORGANISM Explain how some animals of the same species can look so different, such as these rabbits.