Are they alive?

All living things share some basic properties. 1. Cellular Organization 2. Reproduction 3. Inheritance 4. Obtain and Use Energy 5. Homeostasis (Self-Regulation) 6.Responsiveness 7.Growth and Development 8.Adapt Through Evolution ( Population/Not individual)

A. Unicellular Organisms Entire organism is made up of one single cell Entire organism is made up of one single cell Bacteria and protists Bacteria and protists Smallest unit capable of all life functions

1B. Multicellular Organisms The organism is made up of many cells The organism is made up of many cells Cells have specialized functions within the organism Cells have specialized functions within the organism

Reproduction is the process of producing new organisms of the same type A. Asexual Reproduction A. Asexual Reproduction A single parent organism reproducing by itself A single parent organism reproducing by itself

2B. Sexual Reproduction Two different parent organisms contribute genetic information Two different parent organisms contribute genetic information Involves the combination of male and female sex cells Involves the combination of male and female sex cells

Genes carry hereditary information Genes are composed of DNA (bio-molecule) Heredity is the reason children resemble their parents Mutations change DNA code and can be passed from generation to generation

Living organisms need energy to grow, develop, repair damage, and reproduce. That energy comes from the chemical bonds of “food”. Producers : Use sunlight to change CO2 and H2O into food (photosynthesis), which they use for their own “fuel”. Consumers : eat other organisms for food. Decomposers : Break down/digest dead organisms for food.

A stable state of conditions in the body that are necessary for life (maintaining the same internal conditions regardless of external conditions) Body temperature Body temperature Blood volume Blood volume pH balance pH balance Water balance Water balance

Organisms react to stimuli: Light Light Temperature Temperature Odor Odor Sound Sound Gravity Gravity Heat Heat Water Water Pressure Pressure An example is a plant’s leaves and stems growing toward light

Growth means to get bigger in size

Adaptation A process that enables organisms to become better suited to their environment A process that enables organisms to become better suited to their environment Species obtain adaptations through evolution over great periods of time Species obtain adaptations through evolution over great periods of time

Adaptations Needles & waxy leaves Camouflage Bioluminescence Poison

Is it Alive? These organisms easily meet the criteria.

Why isn’t it alive? Quartz Crystals Virus