Cells Unit 1: Fuction of cells

Today’s Learning goals! Learn the history of the cell theory. Describe the three parts of the cell theory. Compare the functions of cells to the functions of organisms

Living things are different from nonliving things… You are surrounded by life, but how would you define a living thing? Does it use energy? Does it move? Does it consume food and water? Organism - any individual form of life that uses energy to carry out its activities.

Needs for life… Organisms need energy, materials, and living space. All energy comes from the sun. Some organisms use this energy directly (photosynthesis) Others harness this energy by eating food Materials needed for photosynthesis: Carbon dioxide, sunlight, nitrogen, water

Photosynthesis review

CELL THEORY TIMELINE

Did you know?! http://viewpure.com/4OpBylwH9DU?ref=search The average human being is composed of around 100 trillion individual cells It would take as many as 50 cells to cover the area of a dot on the letter “i” The invention of the microscope enabled the discovery of cells. Humans were able to see microscopic structures that had never been seen before. The idea that these tiny structures existed, had never been considered.

Cell theory There are three concepts to the cell theory Every living thing is made up of one or more cells. Cells carry out the functions needed to support life Cells come only from other living cells Cork cells at 4x