AIM: What is a cell and what are its parts? DO NOW: Write down 5 things (concepts) that identifies if something is living or non living. AIM: What is a cell and what are its parts?

Living, Non-living or Dead?

Living, Non-living or Dead?

Living, Non-living or Dead?

Living, Non-living or Dead?

Living, Non-living or Dead?

Living, Non-living or dead

Living, Non-living or Dead?

Living, Non-living or Dead?

Living, Non-living or Dead?

Living, Non-living or Dead?

Living, Non-living or Dead?

1) What is life? In Biology, life is defined not by what it IS, but by what it DOES. We call something that is alive an organism. There are 8 things that living things do that separate them from non-living things. These 8 things are called life functions.

2) What are the 8 life functions? Nutrition- the ability to obtain and digest food Respiration- the ability to convert food (organic molecules) into energy. Synthesis- the ability to make molecules that the organism cannot get from the environment. Growth- the ability to increase in size Transport- the ability to move materials into, out of and throughout an organism.

What are the 8 life functions? (cont.) Excretion- the ability to remove waste products made by cells. Regulation- the ability to maintain homeostasis. - Homeostasis- a stable internal environment in a changing external environment. Reproduction- the ability of an organism to produce more of its own kind Not needed for the individual organism to survive, but needed for the species to survive.

BIOLOGY 3) What is the smallest unit of life? Because the cell can perform all of the 8 life processes, it is considered the smallest unit of life. Mr. Harrigan

4) Do you need cells in order to be alive? BIOLOGY 4) Do you need cells in order to be alive? All organism, big or small, must contain at least one cell. With out these cells, we could not perform any of the 8 life functions. Mr. Harrigan

5) The Cell Theory There are 3 rules in the cell theory: BIOLOGY 5) The Cell Theory There are 3 rules in the cell theory: Every organism is made up of one or more cells. The cell is the basic unit of structure and function in all living things. All cells come from pre-existing (old) cells. Mr. Harrigan

6) Are there different groups of cells? BIOLOGY 6) Are there different groups of cells? Cells can be grouped into two categories: - Prokaryote: these are cells that do not have a nucleus. Example: Bacteria - Eukaryote: these cells have a distinct nucleus. Mr. Harrigan

BIOLOGY Prokaryote Cell Eukaryote Cell No Nucleus Nucleus Mr. Harrigan

7) What are the types of Eukaryote cells? BIOLOGY 7) What are the types of Eukaryote cells? Eukaryotic cells fall into two categories: a) Plant Cells b) Animal Cells Mr. Harrigan

8) What are the parts of the cell that you can see under a microscope? BIOLOGY 8) What are the parts of the cell that you can see under a microscope? The cell is made up of many different parts. Each part does a specific job. The parts work together allowing the cell to survive. These parts are called organelles. Organelles are specialized parts of the cell that perform a specific job. Mr. Harrigan

9) Cell Membrane The cell membrane: FUNCTION: BIOLOGY 9) Cell Membrane The cell membrane: FUNCTION: surrounds and protects the cell controls what goes in and out (the bouncer) STRUCTURE: - is made of a double-lipid layer Mr. Harrigan

10) Nucleus The nucleus: FUNCTION: Controls all of the activities of the cell (the control center) STRUCTURE: - enclosed by its own membrane and contains the cell’s DNA

11) Cytoplasm The cytoplasm: FUNCTION: is where the cell’s chemical reactions take place It’s the transport system of the cell STRUCTURE: - as a fluid-like material consistently mainly of water

13) Chloroplasts NONE The chloroplasts: FUNCTION: are the place where photosynthesis takes place STRUCTURE: - Contain pigments that give the plant color (green) NONE

Anacharis cell (plant cell) cytoplasm chloroplasts Cell wall

Anacharis cell (plant cell)

Human cheek cell (animal cell) cytoplasm nucleus Cell membrane

Place a check (√) in the box if the cell has that structure. Animal cell Plant cell Cell membrane √ nucleus Cell wall Cytoplasm Chloroplast