Name of presentation

An Organism is a living thing.

All living things have:Cellular organizationContain certain chemicalsRespond to surroundingsGrow and developReproduce
What is Life?

Unicellular- single celled organisms

Multicellular- many cells and they specialize to perform certain task.

Cell is the basic unit of structure and function of an organism.Prokaryotic- cells with no true nucleus.

Eukaryotic-cells with a nucleus

Characteristics of Life-Cells

Cells are composed of chemicals

Water is the most abundant

Carbohydrates are the main source of energy

Cells also need proteins, lipids, and nucleic acids
Characteristics of Life-Chemistry

Cells need energy for growth and repair of injured parts.

A change in an organisms surroundings that causes a reaction is a stimulus.

Tropism- a response to a stimuli ( phototropism, thermal tropism, auditory tropism, gravitational tropism)

Characteristics of Life-Energy and Stimuli

Development is the process of change that occurs during an organisms life to produce a more complex organism.

Reproduction is the ability to reproduce(sexually or asexually), or produce offspring just like you.
Characteristics of Life-Development/Reproduction

Spontaneous generation theory- mistaken idea that living things arise from nonliving sources.

Redis Experiment

Louis Pasteur Experiment

Death of a Pumpkin experiment

Life comes from life

Water- needed to survive to break down chemicals, food, grow, move, and reproduce.

Food- a source of energyAutotroph vs Heterotrophs
Needs of Living Things

Living space-Need a place to live and gather needed resources to survive.

Stable internal conditions despite the external conditions.Homeostasis
Needs of Living Things