Do Now - FCAT Review 1.Fresh milk has several parts that a farmer can separate and sell. A farmer removes the top layer of fat from fresh milk. What property does the farmer use to separate the fat from the rest of the milk? a)Densityc) Boiling point b)Magnetismd) Electrical conductivity 2.Bill left a hammer out in the rain all day. The next morning it had rust on it. Oxygen and metal chemically combined to form rust. What is rust an example of? a)A mixturec) An element b)A solutiond) A compound 3.Circle the substance that has the most OH- ions? Milk of Magnesia: 8.3 Lemons: 2.0Human Blood: 7.0

Homework and Announcements Due – Counting Atoms Practice Problems (quiz grade) USA TestPrep – not until Jan. Today Textbook pages 448, (all questions and activities) Vocabulary ch 13 lesson 1 (word+definition+picture) – Make a chart, color your picture, write neatly – Ecosystem, photosynthesis, autotroph, heterotroph, chlorophyll 2

Lets say... You are royalty (Kings and Queens). Your Kingdom has five people. 3 Think about it… What five jobs will you assign to these people to help your kingdom survive?

Title: Cell Structure L.O. SWBAT explain the difference between plant and animal cell structures. 4

Unicellular: Single-celled Ex. Bacteria Multicellular: Composed of many cells Ex. California King Snake or the California Sea lion Unicellular and Multicellular Organisms

multicellular organisms 09/17/10 Cells Tissues Organs Organ Systems Organisms

Cell Theory 1.All living things are composed of cells. 2.Cells are the basic units of structure and function in living things. 3.All cells are reproduced from other cells.

Cell Diversity: There are a variety of cells each with their own function. 8 Structure and Function

Discovering Cells  Cells are the basics units of structure and function in living things. Example: Human red blood cells transport oxygen throughout the body. Human Eosinophil combat parasitic diseases and allergies. Human ear hair cells process different sounds that you hear.

Name one type of cell found in the human body. What does “uni” mean? What does “multi” mean? Check Point Red Blood Cell, Hair Cell, Skin Cell, etc. one or singular many or multiple

Cell Organelles Eukaryotic Cells have a nuclei. (i.e. Animal Cells) Prokaryotic Cells do not have a nuclei. (i.e. bacteria) Everything in a cell except the nucleus is called a cytosol. 11

This bacteria cell has no membrane-bound nucleus but has a CELL WALL

13

Animal Cell 14

Cell “plasma” Membrane Boundary of the cell phospholipid bilayer Semi-permeable like a filter or screen – some things pass, others cannot 15

Organelles Organelle = “little organ” carry out specific functions within the cell. 16

Nucleus Control center of the cell Contains DNA double membrane easy to see under a microscope One per cell 17

18 The nucleus with other structures…

19 Endoplasmic Reticulum (ER) Connected to nucleus Highway of the cell Rough ER: with ribosomes -makes proteins Smooth ER: without ribosomes

20 ER!

21 Ribosome makes proteins Produced in nucleolus transported out of the nucleus!!

22 Golgi Apparatus Looks like a stack of plates Stores, modifies and packages proteins “post office”

Lysosomes Garbage disposal of the cell Contain digestive enzymes that break down wastes

24 Mitochondria Powerhouse of the cell Cellular respiration occurs here to release energy for the cell to use Has its own strand of DNA

25 Mitochondria!

26 Mitochondrion Golgi apparatus Nucleus Cytoplasm Plasma Membrane Endoplasmic Reticulum (ER) Vacuole Nuclear Membrane Ribosomes SUMMARY

Independent Work Textbook pages 448, (all questions and activities) Vocabulary ch 13 lesson 1 (word + definition + picture) – Make a chart, color your picture, write neatly – Ecosystem, photosynthesis, autotroph, heterotroph, chlorophyll WordDefinitionPicture Ecosystem Photosynthesis Autotroph Heterotroph Chlorophyll