CELLS AND LIFE!
M R S . M A R K S 5 TH G R A D E C L A S S L E S S O N
CORK CELLS UNDER A MICROSCOPE
Robert Hooke-1st cells observed under microscope!
ANIMAL CELL & STRUCTURES
PLANT CELL & STRUCTURES
DIFFUSION
Passive transport = no energy needed
A lot of dye molecules
Dye molecules diffused
in water all around
A little or no dye molecules in water
Passive transport = no energy needed
DIFFUSION AND OSMOSIS
Osmosis = diffusion of water across a membrane (see difference in plant cells)
• Plants in salt water:
https://www.youtube.com/watch?v=SooSsKkJo1o
CELLS MAKE UP ORGANISMS
• Cells make up tissues (sheets of cells)
• Different tissues make up organs (enclosed areas in
with specific jobs—like the heart or skin)
• Many organs work together as an organ system
(such as the digestive system)
• Organ systems rely on each other
• The circulatory system brings food traveling through your
blood from the digestive system to other parts of the body
• All of this is going inside an organism (YOU are an
organism!)
FOUR TYPES OF ANIMAL TISSUES
1. Muscle Tissue
FOUR TYPES OF ANIMAL TISSUES
2. Nervous Tissue
No, not this kind of tissue 
FOUR TYPES OF ANIMAL TISSUES
3. Connective Tissue
FOUR TYPES OF ANIMAL TISSUES
4. Epithelial Tissue
TYPES OF TISSUES
FROG DEVELOPMENT
• Watch here as one cell (egg) of a frog develops
into a tadpole and then to a
frog!https://www.youtube.com/watch?v=dXpAbez
dOho