Bellwork(8 minutes only)1. What makes

this compound microscope different from the dissection microscopes we’ve used?

2. Copy the labels onto your handout

3. Organize 3 ring binder (all in order) & review for test

NEW SEATS

BEFORE THE TEST- REVISIT THE ESSENTIAL QUESTION FOR ECOLOGYEssential Question

How do the interactions of living things and the environment affect our world?_______(old answer)__________ ____________________________________________________________________________________

NEW & IMPROVED ANSWER: ____________________________________________________________________________________________________________________________________________

ECOLOGY UNIT BINDER CHECK

Pull out the ecology Divider

+2pts each assignment present

Flip through notebook & score as Ms. D puts assignments on board

Circle score at top (24 pts possible). Pass forward.

Ecology Unit1. Notes

2. Labs

3. Assignments

4. Tests

-What is Life Notetaker-Energy Flow Notes-Trophic Levels & Rule of 10 Notes-Biome Poster Notes/Research Notes-Aquatic Macroinvertebrates & Water Quality-Population Notes

-Cricket Mark & Recapture Lab-Aquatic Macroinvertebrates Lab-Jackrabbits & Coyotes Lab

-What Is Life Quiz

-Critter Outline-Overpopulation Article

MICROSCOPE CARE & SAFETY

Take only from appropriate cabinet Always carry with 2 hands (base & arm) ONLY use lens paper to clean Do NOT force knobs Keep away from table edge &

keep objects clear of cords Store covered & w/ stage down

aka “put it in park”

1. Place slide on Microscope2. Use Stage Clips 3. Click Nosepiece to the lowest

(shortest) objective4. Look into Eyepiece5. Turn Coarse Adjustment (big knob) to

focus; move slide if nessary6. Click to medium objective7. Use Coarse & Fine Adjustments (big &

little knobs) to focus

8. Click the nosepiece to the high power (longest) objective

9. Do NOT use the Coarse Focus Knob anymore

10. Use ONLY the Fine Focus Knob (little knob) to focus on high power

What can you find on your slide?

AFTER YOU FINISH THE TEST, HEAD TO YOUR NEW LAB TABLE AND PRACTICE FOCUSING ON THE SLIDES!

Bellwork1. How can you tell the difference between

low, medium, & high power objectives?

2. Summarize the steps to focusing a microscope in 3-4 sentences (look @ your microscope notes for assistance)

3. How do you put a microscope into PARK?

4. What safety rule do you need to remember when using HIGH power?

**When finished, study your microscope parts diagram, short scratch paper quiz today!

6. Which power objective must you focus in FIRST?7. What is the ONLY knob you should use when

focusing on high power?8. To put the microscope in park @ the end, you must

cover it and put the stage all the way __________.

For 1-5, name the part being pointed to in the picture

Microscope Quiz

6. Which power objective must you focus in FIRST? LOW

7. What is the ONLY knob you should use when focusing on high power? FINE FOCUS

8. To put the microscope in park @ the end, you must cover it and put the stage all the way DOWN

NEW UNIT- NEW DIVIDER

1. Notes

2. Labs

3. Assignments

4. Tests

-Microscope Notes

Cells Unit Essential Question

Why are cells called the “basic unit of life”?

___________________________________________________________________________________________________________________

WHAT MAKES A GOOD MICROSCOPE DRAWING?- ON BACK OF MICROSCOPE NOTES Title (what is it, what power lens) Size (petri dish) Detail (Slow down! Count! Again!) Observations (complete sentences) Labels (use ID guides & vocab)

Plant cell (Eukaryote)

Observations•The algae is light green inside•The cells are all about the same size rectangles•There are 16 strands of algae in view

Green algaeRhizoclonium

U of A pond water, high power

MICROSCOPE INTRO LAB (LAB BOOK)Question: What do cells look like under a

microscope?

Hypothesis: If…then…as measured by….

Procedures: 1. On HIGH power, draw 2+ QUALITY

microscope drawings.

Data (drawings):

SCORE ONE OF YOUR DRAWINGS (10 PTS POSSIBLE)

Title- 2pts (must describe sample AND power)Size- 1pt (at least as big as a medium petri dish)Detail- 3pts (3=very detailed, 2=some detail, 1=scribbles)

Observations- 3pts (3=two+ observations in complete sentences; 2=two+ observations, but incomplete sentences; 1=only on observation)

Labels- (1pt) at least one label on the drawing

ANNOUNCEMENTS Turn in critter projectPut new assignment & rubric on LEFT side

pocket (new assignment side)

New Critter Assignment

Habitat Card

& Graded

Critter

Assignments

The saw-toothed slitherfish has several adaptations that help it survive in a Coral Reef. It’s dagger-like teeth are its best hunting weapon, because they allow it to puncture the

Namep.__

R

UB

RIC

CLOSURE1. On a scale of 1 (best) to 3 (worst), where do you

rate your ability to focus on high power?

2. Explain why you gave yourself that rating.

3. Answer the question below based on your rating:

If you gave yourself a 1 what specific things can you do next class period to be a leader and assist students who need more help?

If you gave yourself a 2 or a 3, what specific things will you try doing next class period to gain confidence and practice?

BELLWORK

1. Look back at yesterday’s hypothesis did the cells you saw yesterday look like what you expected them to? Explain.

2. What is required for a microscope drawing? (list ALL parts)

3. Set up your lab notebook for today like picture on the right

Prokaryote vs Eukaryote LabBackground Info:

Prokaryote = bacteria cells Eukaryote = plant & animal cells

Question: What differences can you see between prokaryotic cells and eukaryotic cells under the microscope?

ANOUNCEMENTS- SCORE & PASS UP BW

Science Fair ProposalApproved: You earned half of your points.

Staple a lined piece of paper to back addressing ALL comments to earn the rest.

Not approved: You earned 0 pts and must staple lined sheet of paper with new proposal to earn any points back. DUE MONDAY!

In computer lab ROOM 38 (DIFFERENT!) next Tuesday to do experimental design in rough draft packet

ANNOUNCEMENTS Turn in critter project (Bio 1-2 turn in

today) Pre-AP- attach late pass to turn in

todayPut new assignment & rubric on LEFT side

pocket (new assignment side)

New Critter Assignment

Habitat Card

& Graded

Critter

Assignments

The saw-toothed slitherfish has several adaptations that help it survive in a Coral Reef. It’s dagger-like teeth are its best hunting weapon, because they allow it to puncture the

Namep.__

R

UB

RIC

CELLS COME IN A WIDE VARIETY OF SHAPES AND SIZES

Stained MAMMAL TISSUE slides typically show the nucleus as a small,

dark spot did you see these yesterday?

Prokaryote= bacteria cells

Eukaryote= plant & animal cells

PROKARYOTE VS EUKARYOTE LABBACKGROUND INFO:

PROKARYOTE VS EUKARYOTE LAB

Question: What differences can you see between prokaryotic and eukaryotic cells under the microscope?

Hypothesis:IfThenAs Measured By

Make a prediction about size, shape, or other characteristic you can SEE

PROCEDURES1. View prepared slide of prokaryotes

(1 HIGH POWER drawing of CELLS required)

2. Prepare wet mount of pond water & view eukaryotic cells (1 HIGH POWER drawing of CELLS required)

-Label slide w/ masking tape-Put 1-2 drops pond water on clean slide-Put cover slip on top

PROCEDURES3. Clean-up

-Rinse slides & cover slips @ BOTTOM

of sink (in case you drop)-GENTLY dry slides w/ paper towel

-Sanitize table & dry-Wash hands

JOBS ROLES- PARTNERS Microscope Expert

Takes microscope ½ sheetONLY fine focus knob used on high powerKeeps microscope away from edge

Slides Safety ExpertMakes sure everyone is being PAYING

ATTENTION while preparing & cleaning slides

Makes sure slides are labeled Alerts Ms. D immediately of any breaks

PARTIAL CONCLUSION: 3-4 SENTENCES

What did you learn about prokaryotes vs eukaryotes? Explain.

PARTIAL CONCLUSION: 3-4 SENTENCES

Summarize your hypothesis and say whether it was supported or rejected?

What observations supported or rejected your hypothesis? (give details)

What did you learn about prokaryotes vs eukaryotes? Explain.

BELLWORK

1. Sketch a prokaryotic cell & a eukaryotic cell.

2. What were the major differences you saw between the two cell types?

3. Finish your 3-4 sentence conclusion for yesterday’s lab- IN YOUR NOTEBOOK:

-Was your hypothesis supported or refuted?-What observations supported or refuted your hypothesis (explain)-What did you learn about prokaryotes & eukaryotes?

Cells are divided into 2 major categories based on how the DNA is stored:

Prokaryotes or Eukaryotes

Remember DNA? It’s

what codes for your

GENES and makes you who you

are!

PROKARYOTES (PRO= “BEFORE”; KARYON = “NUCLEUS”) NO nucleus to store DNA, it floats

coiled in the middle of the cell Very small and simple structure Example: Bacteria

Draw and label the DNA on

your diagramDNA

EUKARYOTES(EU = “TRUE” ; KARYON = “NUCLEUS”) DNA stored in nucleus

surrounded by a protective membrane

Larger size, complex structure Examples: plants and animals

Draw and label the DNA on

your diagram

DNA

CELL SIZE VISUALIZATION

http://learn.genetics.utah.edu/content/begin/cells/scale/

WHAT ARE THE MOST IMPORTANT ORGANS IN YOUR BODY? WHAT IS THE

FUNCTION OF EACH ONE?

Talk to your partner & be

ready to share

ORGANELLES

Organelles are structures that work like miniature organs within the cell to perform specific functions (jobs). ONLY found in eukaryotes.

1. NUCLEUS Contains the genetic material (DNA/genes) Surrounded & protected by a nuclear

membrane Directs all the activities of the cell. Analogy = the “brain” or “jefe” of the cell.

LABEL THE NUCLEUS & NUCLEAR MEMBRANE ON YOUR EUKARYOTE

NUCLEUS

NUCLEARMEMBRANE

Do prokaryotes

have a nucleus?

NO!!!!

2. MITOCHONDRIA

Convert sugars into ATP energy (ATP is the chemical used to power the cell)

They have their own DNA! They probably came from a eukaryote engulfing a PROKARYOTE!

Analogy = “Powerhouse of the cell”

DRAW & LABEL A MITOCHONDRION IN YOUR EUKARYOTE

MITOCHONDRIA

OTHER CELL PARTS (NOT ORGANELLES)

3. CYTOPLASM A gel-like substance that fills the cell

(mostly made of water) Materials in the cell are suspended in

the cytoplasm Analogy = “the glue that holds

everything in place”

LABEL THE CYTOPLASM ON YOUR PROKARYOTE & EUKARYOTE

CytoplasmCytoplasm

4. CELL MEMBRANE

Separates & protects the cell from the outside environment

It is SEMI-PERMEABLE (let’s some things in, keeps other things out)

Analogy = “It’s the bouncer of the cell”

LABEL THE CELL MEMBRANE ON YOUR PROKARYOTE & EUKARYOTE

Cell Membrane

Cell Membrane

5. CELL WALL A tough, rigid, outer cell layer (outside the

cell membrane) Provides extra strength; helps cells keep

their shape Found in plants & bacteria, NOT in animal

cells Analogy = “Spanx of the cell- keeps the

shape”

LABEL THE CELL WALL ON YOUR PROKARYOTE

Cell Wall (outer most layer)

If we’re not labeling a cell

wall on our eukaryote…does

that make it a plant or animal

cell?ANIMAL!!!!

WHAT OTHER CELL PARTS & ORGANELLES ARE THERE?

Use the textbook Chp. 3.1-3.3 to fill out your cell parts worksheet

CLOSURE- ON NOTETAKER Make a Venn Diagram for Prokaryotes vs

Eukaryotes and decide where in the Venn Diagram to write each of the following terms:

Prokaryotes

Eukaryotes

Nucleus Cell Wall Cell MembraneMitochondria Cytoplasm AnimalBacteria PlantsOrganelles

BELLWORK1. What is 1 major difference between eukaryotes and

prokaryotes?

2. Look at your notes from yesterday- what 2 ORGANELLES did you learn about? What was the analogy for each one?

3. Which organelle would you expect a cell to have only ONE? Which organelle would there be many of in the same cell?

4. Title the next page in your notebook “Eukaryotic Cells Lab: Plant vs Animal”

5. Copy the Question: “If plant and animal cells are both eukaryotic, how do they compare under the microscope?”

6. Write an If…then…as measured by…. Hypothesis. Be ready to share!

LABELING SLIDES Always label the slides you prepare!

Use masking tape & penPut label on TOP of slide Include DATE and DESCRIPTION

10-1-12Jessica’s cheek cells

PROCEDURESA. Prepare a slide of your cheek cells

1. Put 1 drop methylene blue on labeled slide 2. GENTLY scrape inside of cheek w/ toothpick 5-6 times3. Swirl toothpick into methylene blue on slide4. Place cover slip on top5. Clean upLeave slide & cover slip in bleach solution 1-2 mins. before

rinsing & drying

B. View 2 different prepared slides of mammal tissue

C. Prepare a wet mount of an onion skin6. Peel off a THIN layer of onion skin7. Stretch the skin across slide8. Put 1 drop iodine stain on top of onion skin9. Place a cover slip on top

D. Prepare a wet mount of an elodea leaf10. Put one wet elodea leaf onto slide11. Place a cover slip on top

E. View 1 prepared plant slide (come get from Ms. D)

JOBS ROLES- PARTNERS Microscope Expert

Takes microscope ½ sheetONLY fine focus knob used on high powerKeeps microscope away from edge

Slides Safety ExpertMakes sure everyone is being PAYING

ATTENTION while preparing & cleaning slides

Makes sure slides are labeled Alerts Ms. D immediately of any breaks

DATA- SET UP W/ PETRI DISHES

1 HIGH power drawings of your CHEEK cells

2 HIGH power drawings of a mammal tissue slides

1 HIGH power drawing of onion skin cells

1 HIGH power drawing of elodea leaf cells

1 HIGH power drawing of a prepared plant slide

CLOSURE- OUT LOUD W/ GROUP Which organelle(s) and cell part(s) did

you see in your cheek cells?

BELLWORK1. What is due TOMORROW? (look @

science fair due dates…)

2. Which of the 6 drawings did you complete yesterday?

3. What kinds of labels did you add to your drawing(s)?

4. What kind of QUANTITATIVE observations did you record?

*****When finished, skim through the handout to learn about an upcoming assignment

CELL ANALOGY BOOK ASSIGNMENT

Due Mon. October 15th. Turn in early for ex. credit!

1. 3 pages folded in ½ stapled together

2. Must do a EUKARYOTE. -Pick either PLANT or ANIMAL cell. Circle on sheet!

3. Include at least 10 cell parts (look at the comparison chart in notetaker for possibilities)

HOW THE BOOK WORKS

4. Compare your cell to something that has many parts. This is your title page.

-Example: A cell is like a school

5. Use the jobs of the cell parts to figure out how to relate them to the analogy

-Example: The nucleus directs all the activities of the cell…..who directs all the activities of the school?

-The principal!

Draw a picture & explain the analogy for each cell part. This goes on each page.

A cell is like a school

by Ms. D

The principal is like the NUCLEUS because he

directs the activities of the school, just like the nucleus directs the activities of a cell.

PROCEDURES- GO FINISH!A. Prepare a slide of your cheek cells

1. Put 1 drop methylene blue on labeled slide 2. GENTLY scrape inside of cheek w/ toothpick 5-6 times3. Swirl toothpick into methylene blue on slide4. Place cover slip on top5. Clean upLeave slide & cover slip in bleach solution 1-2 mins. before

rinsing & drying

B. View 2 different prepared slides of mammal tissue

C. Prepare a wet mount of an onion skin6. Peel off a THIN layer of onion skin7. Stretch the skin across slide8. Put 1 drop iodine stain on top of onion skin9. Place a cover slip on top

D. Prepare a wet mount of an elodea leaf10. Put one wet elodea leaf onto slide11. Place a cover slip on top

E. View 1 prepared plant slide (come get from Ms. D)

AT YOUR DESK… Decide what you will compare your cell

to (what’s the title of your book?)

Start writing down what you could compare the nucleus, mitochondria, cell membrane & cytoplasm to….

PLANT VS ANIMAL CELLS Remember, eukaryotic cells are very

complex, and this category includes both plant and animal cells.

They have many cell parts and organelles, but there are some differences between plant and animal cells.

CELL PART COMPARISON CHARTCharacteristic/Cell Part ANIMAL cell PLANT cell

Overall Shape of Cell Round (irregular shape) Rectangular (fixed shape)

Cell wall - +Plasma (Cell) Membrane + +Cytoplasm + +Mitochondria + +Nucleus + +Smooth Endoplasmic Reticulum + +Rough Endoplasmic Reticulum + +Golgi Apparatus / Golgi Body + +Ribosomes + +Lysosomes + Usually -Microtubules / Microfilaments + +Centrioles + Usually -Flagella Sometimes Sometimes

Cilia + Rare

Chloroplast - +Vacuole + (small) + (VERY large, centrally located)

PLANT CELLS Plastids are special cell parts that are

found only in plants.

What differences did

you see looking at the

plant cells?

6. CHLOROPLASTS Use energy from the sun to make sugars

(food) for the cell through photosynthesis! Contain a green pigment called chlorophyll Analogy = the CHEF of the cell! (makes the

food)

7. VACUOLE A large central fluid-filled sac that regulates

water content & keeps cells “full” & rigid HUGE inside plants, can take up 90% of the

cell volume! Analogy = the WATER TOWER of the cell!

CLOSURE Write a 3 sentence conclusion for the lab

Was your hypothesis supported or rejected? What observations supported or rejected your

hypothesis? What did you learn about plant vs animal cells (use

vocab)?

Update your table of contents for the Prokaryote vs Eukaryote Lab AND the Plant vs Animal Cell Lab

When you are finished, begin labeling your plant vs animal cell diagram on the back of your note taker