Do Now: My planet diary: page 12 of the textbook. Read and answer the two questions into your science notebooks

How do stains make it easier to study the parts in the cell? Stains help scientists see structures inside of cells that would otherwise be invisible

Cells and Heredity Chapter 1, Lesson 2 Looking inside cells Cells and Heredity Chapter 1, Lesson 2

How do parts of a cell work? Each kind of cell structure has a different function within a cell

Cell Types Cells can be divided into two groups 1. Eukaryotic Cells – Cells with membrane bound structures. Have a nucleus 2. Prokaryotic Cells – no membrane bound structures inside the cell. No True Nucleus - Ex: Bacteria

Into what two groups can cells be separated? Prokaryotic and Eukaryotic Cells

Cell Wall Surrounds cell and gives it a rigid, boxlike shape Found in plants, fungi, algae, most bacteria Mostly made up of cellulose (carbohydrate) Allows water and dissolved materials to pass through

Cell Membrane Found in Both Controls which substances move into and out of a cell The cell membrane is semipermeable “Screen window” for the cell

Color in the cell membrane On Page 13 color in the cell membrane

Nucleus Directs all cell activity Largest cell structure Found in both cells Contains Chromatin: long threadlike hereditary material made of DNA. Contains Nucleolus- small round structure in nucleus Separated from cytoplasm by a membrane “Brain of the CELL”

organelles Organelles- tiny cell structures that carry out specific functions within a cell

Ribosomes Produce proteins needed by cell Found in both cells Some flow freely in cytoplasm some are attached to the ER “Ribs provide us proteins”

Cytoplasm Fill most of cell; moves organelles within cell helps hold organelles in place Found in both “Gel in the Cell”

Mitochondria Mitochondria – Rod like structures Convert energy stored in food to energy used by cell Found in both cells Power House of the cell “Mighty Mitochondria Superhero of the cell”

Endoplasmic Reticulum Looks like maze of passageways helps make proteins and other substances. Found in both cells Rough – ribosomes attached Smooth – no ribosomes attached ER – “ambulance of the cell.” “Mailman”

Color page 15 Color in the various cell parts on page 15

Golgi Apparatus (Bodies) Stacked, flatten membranes Packages and distributes materials from ER Found in both cells “Post office of the cell”

Vacuole Stores water, food, waste and other cellular materials Plants cells have one or more large vacuoles (for storing water). Animals cells: some have vacuoles but don’t always have them

Chloroplasts In plant cells Contain a green pigment (color) called chlorophyll which gives plants their green color. Chloroplasts makes food for cell using energy from sunlight

Lysosomes Saclike organelle break down food particles and worn out cell parts Found only in animal cells Lysosomes membrane prevents digestive chemicals inside from leaking into the cytoplasm “Lysol” or “Recycling Center”

Endoplasmic Reticulum Nucleus Which cell part controls what goes in and out of the cell? Which organelle stores water, food, and waste? Lysosome Mitochondrion Vacuole Cell Membrane Endoplasmic Reticulum Nucleus

Lysosome Cell Membrane Ribosome Nucleus Vacuole Chloroplast What is one cell part a plant cell has that an animal cell does not? Where are proteins made? Lysosome Ribosome Vacuole Cell Membrane Nucleus Chloroplast

Pg 19 questions 1a,b,c,d

Cell City

Compare a cell to a restaurant Identify and explain how a cell can be compared to a restaurant. Use the structure of the building as well as the workers to make comparisons

Cell vs. Restaurant Nucleus - Kitchen Cell membrane – Doors Cell Wall – Restaurant Wall Lysosome – Dumpster / Trash / Bathrooms Mitochondria – Electrical Outlets Vacuoles – Fridge Golgi Bodies – Chef Ribosomes – Table Buser ER – Waiters Now for homework, you will come up with your own Cell Analogy on Google Classroom!

How do cells work together in an organism? Part 2 How do cells work together in an organism?

Think about it… During the Microscope Stations Lab, you looked at 3 different cells: cork onion animal Based on your observations, do you think all cells look the same?

Comparing Cells Nerve Cell - can be a meter long Human Egg Cell – no bigger than the dot on this i

Comparing Cells The shape of a cell may tell you about its’ function Bacterium – smaller than all the other cells Human Blood Cell – 1/10 the size of the human egg The shape of a cell may tell you about its’ function

In your textbook… Look at page 20, Figure 6 Match the Function with the Specialized Cell

Multicellular Consisting of many cells Example: plants and animals

Unicellular Made of a single cell Example: bacteria, protists (amoeba, plankton)

Specialized Cells Cell – basic unit of structure and function in an organism In multicellular organisms, cells are specialized and perform specific functions that benefit the entire organism

Cells Working Together Tissue – a group of similar cells that perform a specific function Organ – a body structure that is composed to different kinds of tissues that work together Organ system- a group of organs that work together to perform a major function In multicellular organisms, cells are organized into tissues, organs, and organ systems

What types of tissues make up your heart? Cardiac muscle tissue, nerve tissue, and blood tissue

In your textbook… Look at page 21, Figure 7 Let’s compare the Organization of Your Body to the Organization of Your School