Cytoplasm: Cytoplasm: GelGel-like material -like material inside cellsinside cells

Cell Membrane: “Cell Membrane: “GATE GATE KEEPER”KEEPER”—Controls what goes —Controls what goes inin and and outout

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NUCLEUS: NUCLEUS: Directs all cell Directs all cell activitiesactivities

With the electron microscope

NUCLEOLUS: NUCLEOLUS: Helps to make Helps to make proteinprotein;;

Found inside nucleusFound inside nucleus

CHROMATIN (CHROMATIN (DNADNA): ): Contains Contains genes or genes or instructionsinstructions for cell’s for cell’s activities (found in activities (found in nucleusnucleus))

Under the electron microscope:

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ENDOPLASMIC RETICULUM:ENDOPLASMIC RETICULUM:

PathwayPathway for moving materials for moving materials through cell (the “through cell (the “express-express-wayway”); usually close to the ”); usually close to the nucleusnucleus

RIBOSOMES: RIBOSOMES: Make Make proteinprotein!!

Under the electron microscope:

Under the electron microscope:

A simple diagram

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MITOCHONDRIA: MITOCHONDRIA: Releases Releases energyenergy in the cell; the in the cell; the ““powerhousepowerhouse””

Under the electron microscope:

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CHLOROPLAST: CHLOROPLAST: Converts Converts sunlightsunlight into cell energy into cell energy (Found in (Found in plantsplants ONLY!) ONLY!)

Under the microscope

CELL WALL: CELL WALL: The The outerouter structure structure in in plantplant cells; made of cells; made of cellulosecellulose

Under the microscope

VACUOLES: VACUOLES: Store Store waterwater, food, , food, and and wastewaste products products

Under the microscope

GOLGI BODIES: GOLGI BODIES: Nicknamed Nicknamed ““UPSUPS”—Packages & ”—Packages & secretesecrete substances made inside the cellsubstances made inside the cell

Under the microscope

LYSOSOMES: LYSOSOMES: Digests Digests cell cell wasteswastes

““garbage disposalgarbage disposal””

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What are the two parts What are the two parts plant cells have that plant cells have that animal cells do not animal cells do not

have?have?

• Cell WallsCell Walls

• ChloroplastsChloroplasts

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Cell Structures by Brainpop

Prokaryotic vs. EukaryoticProkaryotic vs. Eukaryotic

Prokaryotic Prokaryotic CellsCells: NO NUCLEUS

Example: Example: Bacteria

Eukaryotic CellsEukaryotic Cells: have a TRUE NUCLEUS

Example: Example: all cells in your body

What is the difference What is the difference between a single cell between a single cell

and cells working and cells working together?together?

Single Cells do everything by themselves;

Cells in tissues and organs divide up the work!

In many-celled organisms, In many-celled organisms, cells work together to cells work together to accomplish their work:accomplish their work:

TISSUESTISSUES: Cells look ALIKEALIKE, perform the same function.

ExamplesExamples: MUSCLE TISSUE, MUSCLE TISSUE, NERVE TISSUENERVE TISSUE

ORGANSORGANS:A structure made up of different kinds of TISSUESTISSUES that all work together to perform the same JOBJOB.

Examples: Examples: HEART, BRAIN, HEART, BRAIN, LUNGSLUNGS

Cell Specialization by Brainpop

SIZES AND SHAPES OF SIZES AND SHAPES OF CELLSCELLS

Cells have different sizes and shapes, based on their JOBJOB

Some can be very SMALLSMALL and some can be very BIGBIG

Types of Cells Clip Types of Cells Clip (~6 min)(~6 min)

For Tuesday

• Cells Alive WS Completed• Cover Page Done• Article about cells with you – no summary yet• Cell ANALOGY Worksheet done• Ready for Quiz on Cell Organelles – Function and

Compare to other things here at Kinard• Begin CELL PROJECT – See new Handout

For Tuesday

• Cell ANALOGY Worksheet done

• Ready for Quiz on Cell Organelles – Function and Compare to other things here at Kinard

• Entire Packet due on Monday 4/13 or 4/15

• Cell Project Due on 4/13 (Monday)

Microscope – Guidelines for Use1. Handle with care! ($500 piece of equipment)2. Always hold in an upright position, with both hands.3. Don’t touch the lens of the microscope with your hands, Use only lens

paper, (Not Kleenex tissue)4. Always start the process on the Lowest Power (smallest objective)5. If using highest power objective, only use the fine adjustment… 6. Clean-up:

a) Rotate nose piece to the lowest powerb) Wrap cord around the basec) Lower the stage all the way downd) Cover with dust covere) Check microscope into the teacherf) Put carefully on cart

Parts of a Microscope

• Students read out-loud Read top of page _____

• Fill in parts/functions using _____ as a tool

Rest of the Day - Goals

• Create:Title Page

• Begin Table of Contents

• Make History of the Cell Timeline

• Chapter 1 Questions – Page 13 # 1,2,3

I will look for significant progress on these four parts on MONDAY

Do Now 2/14 - Microscopes

• You are going to use the microscope today. • List three safe-handling procedures with the

microscope?• What steps do you take to view a prepared

slide? • If you want to look at it at a higher

magnification, what should you do?• I am looking at my slide through the eyepiece

and the DIN 10 objective….• What is the total magnification of the slide?