Video: The Incredible World Of the Microscope

Link to video

Tissues = group of similar

cells working together.

Lines and protects body surfaces.

Example: Skin & Lining of Organs

Connects, supports and

insulates body.

Example: Blood, fat, bone.

Adipose Tissue

Contracts & relaxes to produce

movement.

Example: walls of intestines, heart

Carries info. to all parts of the

body.

Example: neurons

Skeletal Muscle

Multipolar Neuron Smear

Human Cheek Cells 400x

JQ: What can the appearance of the animal and plant cells below tell you about their functional differences? Explain. (Anatomy & Physiology)

Human Cheek Cells 400x Elodea plant Cells 400x

JQ: What does it mean to be

independent? Are you independent?

Explain.

Specialized cells – multicellular organisms

Human Cheek Cells 400x Elodea plant Cells 400x

Amoeba

Stentor

Paramecium

Euglena

Volvox

Each picture has a link to a video

Humans are made up of trillion's of cells that have special

jobs in order to work together. This way they have a better chance of surviving.

Our cells can’t survive

independently

JQ: What do you think makes an Avatar’s skin

blue? Explain.

JQ: Would you rather have the ability to shrink to the size of a pin head or grow to the size of an

oak tree? Explain.

What is a cell?

The basic unit of structure and function

for all living things!

A theory is a well tested hypothesis that has not been proven incorrect to date.

What is a theory?

1. All living things are made from one or more cells.

2.Cells are the basic unit of structure and function in living things. (Smallest form of life!)

3.New cells come from existing cells.

What is cell theory?

Theodore Schwann

Matthias Schleiden

1. Prokaryotic Cell – cells that lack a membrane bound nucleus. Example: Bacteria and archaea

What types of cells exist?

2. Eukaryotic Cell – a cell that contains a membrane bound nucleus & many specialized structures called organelles. (plants animals, fungi, protists.)

“Tiny organs” - specialized structures

found within a cell.

Technically, organelles have membranes around them. (ex. Mitochondria, nucleus, chloroplast, cell

membrane, E.R., etc.)

What are organelles?

Single Celled – 1 cell (ex. Ameoba, Paramecium)

Multicellular –many specialized cells working together (plants and animals)

Types of Eukaryotic cells

Plant Cell

Animal Cell

Elodea – Magnified at 1000x

Class Review –Post Lab Questions

Magic School Bus Goes Cellular!

Journal Question: Scientists have discovered the following facts:

A. Unlike other organelles, chloroplasts and mitochondria are covered in two

layers of membrane, not one. B. Chloroplasts and Mitochondria have

their own DNA, separate from the DNA in the nucleus of the cell they

are in C. Chloroplasts and Mitochondria reproduce on their own within cells, D. These organelles are about a thousand times smaller than the cell

What can you conclude from this? What would explain all of these facts? Take some time and REALLY THINK about it.

Theory of Endosymbiosis:

A. Explains how membrane-bound organelles came to be in eukaryotes – through infolding of plasma membrane

B. Explains the journal question: Both chloroplasts and mitochondria were once separate, prokaryotic cells, until they were taken in by larger cell and became organelles

C. Why would this be selected for by natural selection?

Magic School Bus Goes Cellular! Cell Part/Organelle Function Which organ or system is the

organelle like? Explain why.

1. Nucleus DNA found inside, controls the

activities of the cell Brain / nervous system

1. Cell Membrane “selectively permeable”: regulates

what goes in and out of cell Skin / integumentary system

1. Cell Wall Rigid outer layer of plant/some

bacterial/fungal cells, for support Bones / skeletal system

1. Ribosome Tiny “protein factory” within the cell -

> proteins do most of cells work Challenging muscle? (poor

analogy though)

1. Mitochondria Powerhouse: turns food molecules into

usable energy Stomach / digestive system

1. Chloroplast Contains green chlorophyll; captures

light energy, CO2 and H2O to do

photosynthesis

Why can’t chloroplasts be

compared to any

organ/system?

1. Vacuole Storage units – Large and central in

plants, smaller in animal cells Challenging liver or fat cells

or bladder maybe

1. Lysosome Little “bags” of digestive chemicals

that kill invaders and recycle

dead/damaged cell parts.

Lymphatic/immune system

Do Now: Check your answers to the Cells Are Like worksheet below.

Magic School Bus Goes Cellular!

Do Now: Check your answers to the Cells Are Like worksheet below.

Eukaryotes

(Complex) Prokaryotes

Cell Types

Plant

Simple

Bacteria

DNA, Cell

membrane,

ribosomes

Nucleus

Animal

Protists Fungi Archaea

Chloroplasts

Some

all

some

Journal Question:

Remember the Journal Question

about changing your perspective?

Describe at least three

ways in which your perspective has been changed by the unit on tissues, cells,

organelles

Today’s Agenda: 1. Write your procedure for DYOE

2. Work on Review Sheet (Quest on Cells, Microscopes, Tissues, Organelles

Next Time)

Take a few minutes to review for your test

Tissue practice quiz

No Journal Question:

1. Take one packet of video questions for “The

Unknown World” from the from table, and return to your seat.

2. Take out your hypothesis

and procedures for your DYOE. I am going to

collect them.

Go to macromolecules PPT

You are what you eat…literally

Your cells are made of four main types of large molecules: Carbohydrates, Lipids, Proteins, and Nucleic Acids. They can only do their job if they have the right amount of each of these.

Lung Tissue

Internal Stomach Lining Tissue

Cross Section Small Intestines

Internal Lining of Gallbladder

Cilia of the Trachea

The Magic School Bus Goes Cellular

1. Pre-read video

questions.

2. Watch movie and answer video questions.

3. Class discussion regarding video questions.

Sticky Cells Activity 1. Pre-read sticky cells

lab.

2. Perform sticky cells activity and record observations.

3. Get assigned microscope, prep sticky cells, view, draw & label.

4. Answer post lab questions and discuss with class.

Human Cheek Cell

JQ: Were the military forces on Pandora good or bad? Explain.

Sticky Cells Activity Part 2 – Plant Comparison

1. Obtain a piece of

Elodea.

2. Get assigned microscope, prep elodea, view, draw & label.

3. Answer post lab questions and discuss with class.

What else is around us

that we can not see?

JQ: What does it mean to be bad?

Explain.

“Several Species of Small Fury Creatures in a Cave

Grooving” Activity

1. Retrieve your bacteria samples.

2. Make observations in journal booklets.

3. Bring bacteria cultures up front and place on red tray for disposal.

4. Wash your hands and dry them off. Return to seat.

1. What should the label on the X-axis be?

0

Growth of Bacteria Over 24 Hours

Time (hrs)

Gro

wth

Rat

e

2. What should the label on the Y-axis be?

3. What should the curve of the graph look like?

0 6 12 18 24

0

1. What should the title of

this graph be?

0

Bacterial Growth as Temperature Increases

Temperature (F)

Popu

lati

on (

thou

sand

s)

2. What should the curve of the graph look like?

3. Why does the graph plummet?

20 40 60 80 100

0

4

8

12

16

1. Explain the curves of this graph

0

Growth of Bacteria Small & Large Petri Dishes Po

pula

tion

0 6 12 18 24

0

JQ: When scientists first attempted to make an avatar

they were unsuccessful. After further inspection they realized that a virus

snuck past its immune system and into its cells. Once in the

cell it took over and destroyed the cells.

Scientists think that the avatar’s cells were missing an organelle. Which organelle

was most likely missing from the avatar’s cells?

An Inside Look at Organelles!

Plant Cell A._____________________________

B. ____________________________

C. _____________________________

D. _____________________________

E. _____________________________

F. _____________________________

G. _____________________________

H. _____________________________

I. ____________________________

J. _____________________________

K. _____________________________

L. _____________________________

M. _____________________________

N. _____________________________

Animal Cell A._______________

B. ______________

C. _______________

D. _______________

E. _______________

F. _______________

G. _______________

NO Journal Question Today! Take some time to review for

your test! You will need a pencil.

JQ: What could he grow up to be? Explain.

Start as one cell with unlimited

potential! End with trillions of

specialized cells each cell being limited potential!

Stem Cells:

Cells that haven’t turned into a specific cell type yet (they’re undifferentiated)

Differentiation:

Process that turns an unspecialized cell into a cell with a specific job.

What are stem cells?

What does it mean to differentiate?

What are the

different types of stem cells?

What is the goal of stem cell research?

What are the issues?

2. Stem Cell Debate Video

You’ve learn about how organisms interact on this

planet, and the damage that humans are causing to the balance of life. We’ve even

discussed some solutions to the problem.

You’ve also learned about how organisms are put together, from cells to organ systems.

Would you choose to be cryogenically preserved if the

technology was available? Explain.

JQ: If you are going to build an Avatar you will need to gather some DNA from a Na’vi and a human. Getting the DNA from a human is easy, but how would you go about getting it from a Na’vi? Explain.

Where do we find DNA?

With something so small how is it possible to pull it

out and look at it?

Extraction Lab

Practicing your extraction technique

How come you don’t start to become a

strawberry when you eat strawberry DNA?

“Avatar Armor” Lab 1. Pre-read lab

2. Get lab coats and

equipment.

3. Measure out material and make armor.

4. Play with armor, record observations & answer questions.

5. Clean-up and return to seats.