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
Top Related