Chapter 3.1 & 3.2

Section 3.1 

Famous people in history!

1. Hooke: was the first to identify cells and name them.
2. Leeunwenhoek: observed live cells 
3. Schleiden: concluded that plants are made of cells
4. Schwann: concluded that animals are made of cells
5. Virchow: proposed that all cells come from other cells.

Wacky History

The technological advance:

The microscope

Cell Theory States:

1. All living organisms are composed of cells.
2. The cell is the basic unit of life.
3. Cells arise from pre-existing cells.

The Cell Theory is one of the 1st unifying concepts of Biology

2 Types of Cells:

A: Prokaryotic Cell           B: Eukaryotic Cell

All cells have a membrane, DNA, ribosomes & cytoplasm


Prokaryotic Cells (Bacteria)

• No nucleus only free DNA
• No membrane-bound organelle (except ribosomes)
• Unicellular organisms

Eukaryotic Cells (Plant, Animal, Fungi, Protist)

• Nucleus present
• Specialized structures that work together called organelles.
• Most are multi-cellular organisms

What do Prokaryotes and Eukaryotes have in common?....

• both are cells
• both contain a DNA
• both have a protective barrier
• both have ribosomes
• both have cytoplasm, a jelly-like substance inside their membrane.
• Some have flagella

Venn Diagram

Microbes in You

Section 3.2

Cells Rap

Cell Song

All organs of the cell have their role....

cytoskeleton: gives shape, gives strength, and aid movement 

nucleus (command center): stores and protects the DNA 

ER (factory): production of proteins and lipids

ribosomes (worker): links amino acids to form proteins 

Golgi apparatus (post office): processes, sorts, and delivers proteins 

vesicles (containers): sacs that carry material 

mitochondria (powerhouse): supply energy to the cell

vacuole (storage containers): sac used for storage of materials

lysosomes (garbage collector): sacs containing enzymes that break down wornout cell parts 

centrioles: role in cell division not entirely clear 

cell wall: provides protection, support, and shapes plant cells

chloroplasts: convert solar energy into energy for cell

cell membrane (animals): protective barrier that determines what goes in and out of cell.

cytoplasm: jelly-like substance in cells where organelles are found.

BrainPop Cell Structure

or......

Assignment: Work on comparing a Cell to your house. What would each organelle discussed in class represent in your household? Be sure to create a list in the back explaining how each item is like the organelle.