Review What are the 6 characteristics of living organisms? What are the 3 parts to cell theory?

Prokaryotes and Eukaryotes

Cells are broken into two categories : Prokaryote “style” Eukaryote “style”

Prokaryote cells are smaller and simpler Do not contain a nucleaus Commonly known as bacteria 10-100 microns in size

These are prokaryote E. coli bacteria on the head of a steel pin.

Prokaryote cells are simply built (example: E. coli) capsule: slimy outer coating cell wall: tougher middle layer cell membrane: delicate inner skin

Prokaryote cells are simply built (example: E. coli) cytoplasm: inner liquid filling DNA in one big loop pilli: for sticking to things flagella: for swimming ribosomes: for building proteins

Prokaryote lifestyle unicellular: all alone colony: forms a film filamentous: forms a chain of cells

Prokaryote Feeding Photosynthetic: energy from sunlight Disease-causing: feed on living things Decomposers: feed on dead things

https://www.youtube.com/watch?v=zQGOcOUBi6s

Eukaryotes

Eukaryotic Have a nucleus (DNA contained in nucleus) More complex that prokaryotes Plant Animal http://library.thinkquest.org/C004535/eukaryotic_cells.html

Eukaryotes Many types of eukaryotes live on their own. These cells live on their own and are capable of providing/finding all that they need to live.

Eukaryotes However, many eukaryotic cells cannot live on their own. These are usually found living in community in an organism. Often they have are “specialized”, designed to do a specific job in an organism.

Prokaryotes and Eukaryotes https://www.youtube.com/watch?v=RQ-SMCmWB1s

Flubber On a piece of paper determine if flubber is living or non-living based on what you observe in the video. https://www.youtube.com/watch?v=HJT2QOpnYb8 https://www.youtube.com/watch?v=KyPqOt_Pgiw

Levels of Organization

Cell Organization Cells are organized into systems that, together, perform functions that keep the organs healthy and alive.

Cells A cell is the basic building block on which the body is built on. The body is simply a collection of cells that do different jobs that live together in community.

Tissues Tissues: groups of similar cells that do the same sort of work Ex: Skin cells make up skin tissue

Organs and Organ Systems Organs: different types of tissues working together Organ systems: a group of organs working together to do a certain job.

Bone Cells are surrounded by a hard substance made of calcium and phosphorus

Nerve cells are long and have many branches Nerve cells are long and have many branches. This allows them to receive and deliver messages quickly.

Muscle cells are usually long and have many fibers that can contract and relax.

Skin cells are mostly flat and close together Skin cells are mostly flat and close together. They form a protective layer for your body.

https://www.youtube.com/watch?v=ZRFykdf4kDc

What does it take to make a city? What systems are needed for a city to function and grow?

Pre-AP What is the most “ancient” organisms on the earth? Why do they have a special domain for themselves? Describe the physical characteristics of a prokaryote. Why cant multicellular organisms’ cells survive on their own? How do cells, tissues, organs, organ systems, and organisms relate to one another? Prokaryotes are capable of linking together. Does this make them a multicellular organism? Why or why not?

6th Grade Science What is the most “ancient” organisms on the earth? Why do they have a special domain for themselves? Describe the physical characteristics of a prokaryote. Describe a paramecium. What are tissues? How do cells, tissues, organs, organ systems, and organisms relate to one another?